Chapt6 Book

Transcription

Chapt6 Book

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Mobile Radio
8.
GM950E/GM950i
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Service Manual
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6804111J39-B
Issue: May, 2000
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Cautions and Warnings
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CAUTION
ELECTROSTATIC SENSITIVE DEVICES
PRECAUTIONS SHOULD BE TAKEN TO MINIMIZE THE RISK OF DAMAGE BY ELECTROSTATIC DISCHARGE TO ELECTROSTATIC SENSITIVE DEVICES (ESDs).
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ANY DEVICES EMPLOYING METAL OXIDE SILICON (MOS) TECHNOLOGY ARE
PARTICULARLY SUSCEPTIBLE.
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CIRCUIT DIAGRAMS MARKED WITH THE ABOVE SYMBOL INDICATE ELECTRONIC
CIRCUITS (PECs) FOR WHICH ESD HANDLING PRECAUTIONS ARE NECESSARY.
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THE USER SHOULD REFER TO BS5783, 1984: HANDLING OF ELECTROSTATIC
SENSITIVE DEVICES. THIS BRITISH STANDARD SUPERSEDES DEF STAN 59-98,
ISSUE 2.
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SAFETY WARNINGS
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THE ELECTRICAL POWER USED IN THIS EQUIPMENT IS AT A VOLTAGE
HIGH ENOUGH TO ENDANGER LIFE.
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BEFORE CARRYING OUT MAINTENANCE OR REPAIR, PERSONS
CONCERNED MUST ENSURE THAT THIS EQUIPMENT IS ISOLATED
FROM THE ELECTRICAL SUPPLY AND TESTS ARE MADE TO ENSURE
THAT ISOLATION IS COMPLETE.
WHEN THE SUPPLY CANNOT BE ISOLATED, MAINTENANCE AND
REPAIR MUST BE UNDERTAKEN BY PERSONS WHO ARE FULLY
AWARE OF THE DANGERS INVOLVED AND WHO HAVE TAKEN
ADEQUATE PRECAUTIONS TO PROTECT THEMSELVES.
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COMPONENTS CONTAINING BERYLLIUM OXIDE ARE USED IN THIS
EQUIPMENT. DUST FROM THIS MATERIAL IS A HEALTH HAZARD IF
INHALED OR ALLOWED TO COME INTO CONTACT WITH THE SKIN.
GREAT CARE MUST BE TAKEN WHEN HANDLING THESE
COMPONENTS WHICH MUST NOT BE BROKEN OR SUBJECTED TO
EXCESSIVE HEATING. DEFECTIVE COMPONENTS MUST BE
DISPOSED OF IN ACCORDANCE WITH CURRENT INSTRUCTIONS.
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LEAD ACID BATTERIES MAY BE FITTED AS THE STANDBY BATTERY.
CARE MUST BE TAKEN WHEN REMOVING OR INSTALLING THESE
BATTERIES TO:
1. ENSURE THAT THE TERMINALS ARE NOT SHORTED TOGETHER.
2. PREVENT SPILLAGE OF THE CORROSIVE ELECTROLYTE.
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Contents
Service Manual
Contents
Introduction
Model Chart and Accessories
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2.0
8.
Gives a brief introduction into the manual and the service policy.
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1.0
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Chapter
3.0
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Provides list of models and accessories available for the mobile radio.
Maintenance
4.0
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Describes how to disassemble/assemble the radio for maintenance purposes
and gives details on safety precautions. There is also information on testing/
servicing the radio using the front panel and diagnostics test modes.
Theory Of Operation
Schematic Diagrams and Parts Lists
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5.0
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Gives a detailed description about the operation of the radio. The information is
supplied to circuit reference detail.
Provides component location diagrams, schematic diagrams and associated
parts lists.
6.0
216-246MHz Band Specific Information
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Provides all information concerning 216-246MHz band split including
component location diagrams, schematic diagrams and associated parts lists.
Appendix
A.0
PL (CTCSS) Codes
B.0
External Device Connectors
C.0
Radio Conversions
Service Manual
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Contents
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Service Manual
Table of Contents
Chapter 1
Introduction
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Table of Contents
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Paragraph
Page
Introduction ................................................................................................ 1
2.0
Scope of Manual ........................................................................................ 1
3.0
How to Use This Manual ............................................................................ 1
4.0
Warranty and Service Support ................................................................. 1
4.1
4.2
4.3
4.4
Waranty Period ............................................................................................
After Warranty Period ..................................................................................
Piece Parts ..................................................................................................
Technical Support........................................................................................
5.0
GM950E/GM950i Technical SpeciÞcation ................................................ 2
5.1
5.2
5.3
General ....................................................................................................... 2
Transmitter.................................................................................................. 3
Receiver...................................................................................................... 3
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Introduction
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Table of Contents
1-ii
Introduction
Introduction
1.0
Introduction
This chapter outlines the scope and use of the service manual and provides an overview of the
warranty and service support. The radio speciÞcations are also supplied in this chapter.
2.0
Scope of Manual
How to Use This Manual
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This manual is intended for use by experienced technicians familiar with similar types of equipment.
It contains service information required for the equipment described and is current as of the printing
date. Changes which occur after the printing date are incorporated by a complete Service Manual
revision to your Product Manual.
Warranty and Service Support
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This manual contains introductory material such as overview, model charts, speciÞcations and
accessories and the remaining chapters deal with speciÞc service aspects of the radio.
Refer to the Table of Contents for a general overview of the manual.
4.1
Waranty Period
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Motorola offers long term support for its products. This support includes full exchange and/or repair
of the product during the warranty period, and service/ repair or spare parts support out of warranty.
Any "return-for-exchange" or "return-for-repair" by an authorised Motorola Dealer must be
accompanied by a Warranty Claim Form. Warranty Claim Forms are obtained by contacting an
Authorised Motorola Dealer.
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The terms and conditions of warranty are deÞned fully in the Motorola Dealer or Distributor or
Reseller contract. These conditions may change from time to time and the following notes are for
guidance purposes only.
In instances where the product is covered under a "return for replacement" or "return for repair"
warranty, a check of the product should be performed prior to shipping the unit back to Motorola. To
ensure the product has been correctly programmed or has not been subjected to damage outside
the terms of the warranty.
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Prior to shipping any radios back to the appropriate Motorola warranty depot, please contact
Customer Services. All returns must be accompanied by a Warranty Claim Form, available from
your Customer Services representative. Products should be shipped back in the original packaging,
or correctly packaged to ensure no damage occurs in transit.
4.2
After Warranty Period
After the Warranty period, Motorola continues to support its products in two ways.
1.
Motorola's Accessories and Aftermarket Division (AAD) offers a repair service to both end
users and dealers at competitive prices.
2.
AAD supplies individual parts and modules that can be purchased by dealers who are technically capable of performing fault analysis and repair.
Introduction
1-1
GM950E/GM950i Technical SpeciÞcation
4.3
Piece Parts
Technical Support
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4.4
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Some replacement parts, spare parts, and/or product information can be ordered directly. If a
complete Motorola part number is assigned to the part, it is available from MotorolaÕs Accessories
and Aftermarket Division (AAD). If a generic part is listed or only a part description is listed, the part
is not normally available from Motorola. If a parts list is not included, this generally means that no
user-serviceable parts are available for that kit or assembly. All orders for parts/information should
include the complete Motorola identiÞcation number. All part orders should be directed to your local
AAD ofÞce.
Singapore Regional Service Centre
10 Ang Mo Kio Street 65
#01-01 Techpoint Building
Ang Mo Kio Industrial Park 3
Singapore 569059
Tel: 65-4815560
Fax: 65-4846123
5.0
General
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Motorola Product Services is available to assist the dealer/distributors in resolving any malfunctions
which may be encountered. Initial contact should be by telephone whenever possible. When
contacting Motorola Technical Support, be prepared with the product model number and the unitÕs
serial number.
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SPECIFICATION ITEM
VHF: 136-174 MHz
UHF: 403-470 MHz
Channel Spacing
12.5 or 20/25 kHz
Frequency Stability
±2ppm(UHF); ±5ppm (VHF)
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Frequency Range
Power Supply
10.8 to 15.6V dc, negative earth
Dimensions
44x168x160 mm (HxWxD)
Weight
1030g
Operational Temperature
- 25¡C to + 55¡C
Storage Temperature
- 40¡C to + 85¡C
Antenna Connection
50W BNC
Environmental
- Mechanical
- Electrical
1-2
TYPICAL VALUE
Vibration IEC 68/2/27 and Shock IEC 28/2/6
European Dust & Water protection IP54
ETS300-086 RF SpeciÞcations
ETS300-113 Cyclic Keying Requirements
ETS300-279 EMC Requirements
ETS300-219 Signalling
Introduction
5.2
Transmitter
SPECIFICATION ITEM
12.5 or 20/25 kHz
Output Power
5-25W
Modulation Limiting
<±2.5kHz (12.5kHz); <±4kHz (20kHz);
<±5kHz (25kHz)
FM hum & noise (CCITT)
>40dB (12.5kHz); >45dB (25kHz) CCITT
Conducted/Radiated Emission
<0.25uW (0.1...1000MHz); <1uW (1...4GHz)
Adjacent Channel Power
<-60dB (12.5kHz); <-70dB (25kHz)
Audio Response (300 - 3000 Hz)
Flat or pre-emphasised
Audio Distortion
<5% @ 1kHz, 60% deviation
Transmit turn on time
<25msec
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Channel Spacing
Receiver
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5.3
TYPICAL VALUE
SPECIFICATION ITEM
Channel Spacing
12.5 or 20/25 kHz
Sensitivity @ 12.5 kHz
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Sensitivity @ 25 kHz
Intermodulation
< 0.35uV (12dB SINAD)
>65dB ETS; >70dB with Base Option
Adjacent Channel Selectivity
>60dB (12.5kHz); >70dB (20/25kHz)
Spurious Rejection
>70dB ETS
Audio Distortion @ Rated Audio
<5%
Hum and Noise (CCITT)
>40dB (12.5kHz); >45dB (20/25kHz) CCITT
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Introduction
TYPICAL VALUE
ETS
Flat or De-Emphasised
Co-channel Rejection
<12dB (12.5kHz) , <8dB (20/25kHz) ETS
Conducted /Radiated Emission
<2nW (0,1..1000MHz); <20nW (1..4GHz)
Receive after transmit time
<25msec
Audio Output Power
4W (internal speaker); <13W external
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1-4
Introduction
Table of Contents
Chapter 2
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Paragraph
Page
Overview..................................................................................................... 1
2.0
Model Chart ................................................................................................ 1
3.0
Accessories................................................................................................ 2
3.1
3.2
3.3
3.4
3.5
Mechanical Hardware Kits: ..........................................................................
Microphones: ...............................................................................................
Speakers:.....................................................................................................
Cables:.........................................................................................................
Other:...........................................................................................................
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Table of Contents
2-ii
Overview
1.0
Overview
This chapter lists the models and accessories available for the GM950E/GM950i mobile radio.
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X = Indicates one of each required
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GM950i 403-470 MHz 12.5 kHz 10W 64CH
AZM08RFF4AA3AA
GM950E 403-470 MHz 12.5 kHz 5W 4CH
AZM08RDE4AA2AA
GM950i 136-174 MHz 12.5 kHz 10W 64CH
GM950E/GM950i
136-174 MHz VHF
403-470 MHz UHF
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AZM08JFF4AA3AA
GM950E 136-174 MHz 12.5 kHz 5W 4CH
AZM08JDE4AA2AA
GM950i 403-470 MHz 20/25 kHz 25W D
AZM08RHF6AA3AA
GM950E 403-470 MHz 20/25 kHz 25W
AZM08RHE6AA2AA
GM950i 403-470 MHz 12.5 kHz 25W D
AZM08RHF4AA3AA
GM950E 403-470 MHz 12.5 kHz 25W
AZM08RHE4AA2AA
GM950i 136-174 MHz 20/25 kHz 25W D
AZM08JHF6AA3AA
GM950E 136-174 MHz 20/25 kHz 25W
AZM08JHE6AA2AA
GM950i 136-174 MHz 12.5 kHz 25W D
AZM08JHF4AA3AA
AZM08JHE4AA2AA
GM950E 136-174 MHz 12.5 kHz 25W
Model Chart
Description
2.0
Model
Item
X
X
X
X
X
X
X
X
X
X
X
X
X
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X
X
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X
X
X
X
PMBN4039_
Packaging Kit
GCN6103_
Control Head Model A2 Non-Display
X
GCN6105_
Control Head Model A3 Display
X
X
Description
X
X
X
X
X
X
X
X
X
X
X
X
GLN7324_
Low ProÞle Trunnion Kit
X
X
X
X
X
X
X
X
X
X
X
X
GMN6146_
Enhanced Compact Microphone
PMUE1619_
GM950E UHF 12.5kHz Tanapa
PMUE1621_
GM950E UHF 20/25kHz Tanapa
PMUD1616_
GM950E VHF 12.5kHz Tanapa
PMUD1618_
GM950E VHF 20/25kHz Tanapa
PMUE1618_
GM950i UHF 12.5kHz Tanapa
PMUE1620_
GM950i UHF 20/25kHz Tanapa
PMUD1615_
GM950i VHF 12.5kHz Tanapa
PMUD1617_
GM950i VHF 20/25kHz Tanapa
PMUE1718_
GM950i UHF 12.5kHz S/T 10W D
PMUE1719_
GM950E UHF 12.5kHz S/T 5W N
PMUD1686_
GM950i VHF 12.5 kHz S/T 10W D
X
X
X
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X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PMUD1687_
GM950E VHF 12.5kHz S/T 5W N
X
X
X
X
GKN6270_
Power Cable
X
X
X
X
6804111J97
GM950E/GM950i User Guide (Korean)
6804111J35
GM950E/GM950i User Guide
2-1
Accessories
3.0
Accessories
3.1
Mechanical Hardware Kits:
GLN7324
GLN7317
GLN7320
HLN9457
GLN7325
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Enhanced Compact Microphone (Standard)
DTMF Microphone
Handset, low cost with Hang-up cup
Desk Microphone
8.
GMN6146
GMN6148
HMN3141
HMN3000
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Microphones:
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3.2
Low ProÞle Trunnion kit (Standard)
High ProÞle Trunnion kit
In-Dash Mount, DIN installation kit
Accessory Connector Facility Kit
IP54 seal, Accessory Connector
Speakers:
Cables:
GKN6270
GKN6271
Other:
External Alarm, Relay and Cable Kit
External PTT
Base Tray
24/12V DC Converter, 6A
24/12V DC Converter, 15A
EMC approved Power Supply
Non-EMC approved Power Supply
Non-EMC approved Power Supply
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GKN6272
GLN7323
GLN7318
GPN6126
GPN6127
GPN6133
HPN4002
HPN8393
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Battery power cable 3m, 10A fuse (Standard)
Ignition switch cable
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All speaker connecting cables have 16-pin accessory connector plug.
GSN6059
13W External Speaker, square
2-2
Table of Contents
Chapter 3
Maintenance
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Paragraph
Page
Overview..................................................................................................... 1
2.0
Disassemble the Radio ............................................................................. 1
2.1
2.2
2.3
2.4
Remove the Control Head ...........................................................................
Remove the Top Cover................................................................................
Remove the Transceiver Board ...................................................................
Disassemble the Control Head ....................................................................
3.0
Assemble Radio......................................................................................... 3
3.1
3.2
3.3
Assemble the Control Head......................................................................... 3
Replace the Transceiver Board ................................................................... 3
Replace the Top Cover and Control Head................................................... 3
4.0
Exploded View Diagrams and Parts ......................................................... 4
5.0
Service Aids ............................................................................................... 6
6.0
Test Equipment .......................................................................................... 7
7.0
Radio Tuning Procedure............................................................................ 8
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
General ........................................................................................................ 8
PA Bias Voltage........................................................................................... 9
Battery Threshold ...................................................................................... 10
Transmitter Power ..................................................................................... 10
Reference Oscillator .................................................................................. 11
Front-End Pre-Selector.............................................................................. 11
Rated Volume ............................................................................................ 12
Squelch...................................................................................................... 12
Transmit Deviation Limit ............................................................................ 13
Transmit Modulation Balance (Compensation).......................................... 14
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Maintenance
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Table of Contents
3-ii
Maintenance
Overview
1.0
Overview
This chapter explains, step by step, how to disassemble and assemble the radio, to transceiver
board level. The chapter also contains a list of test equipment required to service the radio. The
procedure for radio alignment and the test setup is also available in this chapter.
Disassemble the Radio
2.1
Remove the Control Head
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8.
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2.0
Figure 3-1 Control Head Removal.
2.
Press until the side of the control head releases and then repeat the operation on the opposite
side of the radio.
3.
Pull the control head away from the transceiver.
4.
Remove the ßex from the socket on the control head board.
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Insert a small ßat blade screw driver, or similar, in the recess between the control head and the
transceiver (to minimise cosmetic damage to the radio cover start from the bottom side).
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2.2
1.
Remove the Top Cover
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Recess
Figure 3-2 Top Cover Removal.
Maintenance
3-1
Disassemble the Radio
2.3
1.
Insert a small ßat blade screw driver in the side recess of the radio chassis.
2.
Lift the top cover over the chassis.
Remove the Transceiver Board
Protruding Tabs
Flex
Flex
Clip
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Recess
Recess
ChassisRecess
Top Cover
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Printed Circuit Board
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8.
Clip
Chassis
Transceiver Board
Top Cover
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Figure 3-3 Transceiver Board Removal.
Remove the power and antenna connector retaining clips by inserting a small ßat blade screw
driver between the clip and the top of the chassis wall and gently prying the clip upwards.
2.
Remove 13 screws from the transceiver board using a T8 TORX driver.
3.
Carefully remove the transceiver board by rotating it out of the chassis:
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1.
Slowly lift the board on the front edge, the side with the connector that mates with the control
head, and pull gently toward the front of the radio.
The thermal grease can act as an adhesive and cause the leads of the
heat dissipating devises to be over stressed if the board is lifted too quickly.
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CAUTION:
2.4
3-2
Disassemble the Control Head
1.
To pull out the printed circuit board from the control head housing, insert a small blade screw
driver in the side groove near the four protruding tabs. Remove the board from the control head
housing.
2.
Disconnect the board from the speaker by removing from the socket.
3.
Remove the keypad from the control head housing by lifting up the rubber keypad. Care should
be taken not to touch or get other contaminates on the conductive pads on the under side of
the keypad or conductive contacts on the printed circuit board.
Maintenance
Assemble Radio
Assemble Radio
3.1
Assemble the Control Head
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3.0
Protuding Tabs
Recess
8.
Keypad
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Recess
Speaker
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Control Head Housing
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Figure 3-4 Control Head Assembly.
2.
Make sure the speaker including the gasket is well positioned.
3.
Connect the printed circuit board to the speaker.
4.
During the installation of the printed circuit board, ensure the four protruding tabs snap into the
recesses.
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Replace the Transceiver Board
1.
Inspect and if necessary, reapply thermal grease to the heatsinking pads in the chassis.
2.
Before installing the connector retaining clips, ensure that the board is sitting ßush on the
chassis mounting surface.
3.
3.3
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Place the keypad onto the board assembly, making sure the keypad is ßush with the board.
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3.2
1.
Install the 13 screws with 0.4 -07 NM (4-6 in lbs) of torque using a T8 TORX driver.
Replace the Top Cover and Control Head
1.
Position the top cover over the chassis and replace. Ensure that the cross snaps into the
recesses.
2.
Connect the control head to the radio by the ßex.
3.
Press the control head onto the radio chassis until the protruding tabs on the chassis snap into
the recesses inside the control housing, see Figure 3-5.
Maintenance
3-3
Exploded View Diagrams and Parts
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Recess
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Figure 3-5 Control Head Replacement.
Cover Chassis 1502609Y01
incl. Gasket Chassis
3202619Y01
Shield
2602640Y01
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Screw M3x10
03S10911A12
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Controlhead with
or without LCD
Shield
2602639Y01
Main
PCB
Accessory Conn. 16Pin
2804503J01
Power Conn. 0905902V01
Gasket 3205930V01
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Flex
8402618Y01
Clip 4205938V01
Pad
7502618Y01
Gasket
Controlhead
3202620Y01
Antenna Conn.
0905901V06
incl. Gasket
3205929V01
Connector 1580922V01
Gasket Accessory Conn.
3202606Y01
Chassis
2702608Y01
Gasket Cover
3202607Y01
Figure 3-6 Radio Exploded View Diagram.
3-4
Maintenance
Housing
1502611Y02
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Keypad
7502614Y02
Gasket 3505932V01
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Figure 3-7 Control Head Model A2.
8.
8480573Z01
Speaker 5005156Z02
Housing incl.
LCD Gasket
1502612Y03
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Connector Elastromeric
2802638Y04 top
2802638Y03 bottom
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LCD
7202662Y01
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Speaker
5005156Z02
and
Gasket
3205932V01
Maintenance
8480479Z01
Frame LCD
0702643Y01
Keypad
7502615Y02
GEPD5493
Figure 3-8 Control Head Model A3.
3-5
Service Aids
5.0
Service Aids
The list in table 3-1 includes service aids recommended for working on the GM950E/GM950i radio.
Table 3-1 Service Aids.
PART No.
DESCRIPTION
APPLICATION
Test Box Cable
Connects radio to GTF180 test box.
GTF374
Combined Interface
Cable
Connects radio to RLN4008 RIB.
GPN6133
Power Supply
Used to supply power to the radio.
GKN6266
DC Power Cable for radio
Interconnects radio to power supply.
GTF180
Test Box
Enables connection to the universal connector. Allows
switching for radio testing.
RLN4008
Radio Interface Box
Enables communications between the radio and the computerÕs serial communications adapter.
EPN4040
Power Supply
Used to supply power to the RIB (240 VAC).
EPN4041
Power Supply
Used to supply power to the RIB (220 VAC).
3080369B72
Computer Interface
Cable
3080369B71
Computer Interface
Cable
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GTF376
Connects the computerÕs serial communications adapter
(9 pin) to the RIB.
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Connects the computerÕs serial communications adapter
(25 pin) to the RIB.
3-6
Maintenance
Test Equipment
6.0
Test Equipment
The list in table 3-2 includes all standard test equipment required for servicing two-way mobile
radios, as well as several unique items designed speciÞcally for servicing the GM950E/GM950i
radio. Battery-operated test equipment is recommended when available. The ÒCharacteristicsÓ
column is included so that equivalent equipment may be substituted; however, when no information
is provided in this column, the speciÞc Motorola model listed is either a unique item or no
substitution is recommended.
DESCRIPTION
CHARACTERISTICS
System Analyser
*R1150C
Code Synthesizer
*S1053D
220 VAC Voltmeter
*HM-203-7
110 VAC Voltmeter
*SKN6008A
Power Cable for Meter
*SKN6001A
Test Leads for Meter
*S1350C
Watt Meter
*ST1213B
(VHF)
Plug-in Element
*ST1223B
(UHF)
RF Dummy Load
R1065A
Load Resistor
10-watt Broadband
For use with Wattmeter
S1339A
RF Millivolt Meter
10kHz to 1.2 GHz
100µV to 3V rf
RF level measurements
*R1013A
SINAD Meter
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Injection of audio and digital signalling codes
1mV to 300V, 10-Mohm
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DC Power Supply
Frequency/deviation meter and signal generator for wide-range troubleshooting and alignment.
8.
R2000
Series
S1347D or
S1348D (programmable)
This monitor will substitute for items with an
asterisk (*)
APPLICATION
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MODEL
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Table 3-2 Recommended Test Equipment.
Input impedance
Audio voltage measurements
50 ohm, ±5% accuracy
Transmitter power o/p measurements
10 Watts, maximum
0-1000 MHz, 300W
Receiver sensitivity measurements
0-20Vdc, 0-5 Amps
Bench supply for 13.2Vdc current
limited
* Any of the R2000 Series system analysers will substitute for items with an asterisk (*)
Maintenance
3-7
Radio Tuning Procedure
7.0
7.1
General
The recommended hardware platform is a 386 or 486 DX 33 PC (personal computer) with 8 MBytes
RAM, MS DOS 5.0, Windows 3.1, and RSS (Radio Service Software). These are required to align
the radio. Refer to your RSS Installation Manual for installation and setup procedures for the
required software; the user manual is accessed (and can be printed if required) via the RSS.
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To perform the alignment procedures, the radio must be connected to the PC, RIB (Radio Interface
Box), and Universal Test Set as shown in Þgure 3-9.
Figure 3-9 Radio Alignment Test Setup.
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All tuning procedures are performed from the Service menu.
Before going into the Service menu, the radio must Þrst be read using the File / Read Radio menu (if
the radio has just been programmed with data loaded from disk or from a newly created codeplug,
then it must still be read so that the RSS will have the radioÕs actual tuning values).
All Service windows read and program the radio codeplug directly; you do NOT have to use the RSS
Read Radio / Write Radio functions to program new tuning values.
CAUTION:
3-8
DO NOT switch radios in the middle of any Service procedure. Always use the
Program or Cancel key to close the tuning window before disconnecting the radio.
Improper exits from the Service window may leave the radio in an improperly
conÞgured state and result in seriously degraded radio or system performance.
Maintenance
The Service windows introduce the concept of the ÒSoftpotÓ, an analog SOFTware controlled
POTentiometer used for adjusting all transceiver alignment controls. A softpot can be selected by
clicking with the mouse at the value or the slider or by hitting the TAB key until the value or the slider
is highlighted.
Each Service window provides the capability to increase or decrease the ÔsoftpotÕ value with the
mouse, the arrow keys or by entering a value with the keyboard. The window displays the minimum,
maximum, and step value of the softpot. In addition transmitter tuning windows indicate the
transmitter frequency and whether the radio is keyed.
8.
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Adjusting the softpot value sends information to the radio to increase (or decrease) a DC voltage in
the corresponding circuit. For example, increasing the value in the Reference Oscillator tune window
instructs the radio microprocessor to increases the voltage across a varactor in the reference
oscillator to increase the frequency. Pressing the Program button stores all the softpot values of the
current window permanently in the radio.
16
In ALL cases, the softpot value is just a relative number corresponding to a D/A (Digital-to-Analog)
generated voltage in the radio. All standard measurement procedures and test equipment are
similar to previous radios.
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Refer to the RSS on-line help for information on the tuning software.
Note:
7.2
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Perform the following procedures in the sequence indicated.
All tuning procedures must be performed at a supply voltage of 13.2V unless otherwise
stated. The Modulation Analyser to measure the deviation should be set to frequency
modulation with de-emphasis switched off and all high pass Þlters switched off.
PA Bias Voltage
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Adjustment of the PA Bias is critical for proper radio operation. Improper adjustment will result in
poor operation and may damage the PA FET device. For this reason, the PA bias must be set before
the transmitter is keyed the Þrst time.
From the Service menu, select Tx Alignment.
2.
Select Bias Voltage to open the bias voltage tuning window. If the control voltage is out of
range, an error message will be displayed. In this case the radio hardware has a problem and
tuning must be stopped immediately.
3.
Press the Toggle Bias button to set the quiescent current temporarily to 0 mA. The status bar
will indicate that the bias is switched off.
4.
Measure the DC current of the radio. Note the measured value and add the speciÞed quiescent
current shown in table 3-3. The result is the tuning target.
5.
Press the Toggle Bias button to switch on the quiescent current again.
6.
Adjust the current per the target calculated in step 4.
7.
Press Program to store the softpot value.
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1.
Table 3-3 Quiescent Current Alignment.
Maintenance
RF-Band
Target
UHF
VHF
440mA±10%
150mA±15%
3-9
7.3
Battery Threshold
The radio uses 2 battery threshold levels Tx High and Tx Low to determine the battery condition.
2.
Select Battery Thresholds to open the battery thresholds tuning window.
3.
Set the supply voltage to the value indicated for Tx High.
4.
Press the Tx High Program button to store the softpot value for Tx High.
5.
Set the supply voltage to the value indicated for Tx Low.
6.
Press the Tx Low Program button to store the softpot value for Tx Low.
7.
Close the window by pressing Cancel.
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Transmitter Power
To set the transmitter power for customer applications use the Per Radio
window under the Edit menu and set the ÒLevel 1Ó and ÒLevel 2Ó powers to
the desired values. Only if the transmitter components have been
changed should the following procedure be performed.
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IMPORTANT:
8.
7.4
1.
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The advanced power setting technology employed in the GM950E/GM950i makes use of two
reference power level settings along with parameters describing the circuit behaviour. To set the
reference points requires tuning on two power level settings, a high power level setting, and a low
power level setting.
2.
Select RF Power to open the RF power tuning window. The window will indicate the transmit
test frequencies to be used.
3.
Select Point 1 value of the Þrst frequency.
4.
Press Toggle PTT to key the radio. The status bar will indicate that the radio is transmitting.
5.
Measure the transmitter power on your power meter.
6.
Enter the measured value in the box Point 1.
7.
Select Point 2 value of the Þrst frequency.
8.
9.
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10. Press Toggle PTT to dekey the radio.
11. Repeat steps 3 - 10 for all test frequencies shown in the window.
12. Press Program to store the softpot values.
3-10
Maintenance
7.5
Reference Oscillator
Adjustment of the reference oscillator is critical for proper radio operation. Improper adjustment will
not only result in poor operation, but also a misaligned radio that will interfere with other users
operating on adjacent channels. For this reason, the reference oscillator should be checked every
time the radio is serviced. The frequency counter used for this procedure must have a stability of 0.1
ppm (or better).
2.
Select Reference Oscillator to open the reference oscillator tuning window.
3.
4.
Measure the transmit frequency on your frequency counter.
5.
Adjust the reference oscillator softpot on the RSS screen to achieve a frequency as measured
on the frequency counter to be within the limits shown in table 3-4 of the target frequency
displayed on the RSS window.
6.
Press Toggle PTT again to dekey the radio and then press Program to store the softpot value.
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Table 3-4 Reference Oscillator Alignment.
7.6
Front-End Pre-Selector
±150 Hz
±150 Hz
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UHF
VHF
Target
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RF-Band
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Alignment of the front-end pre-selector is normally not required on these radios. Only if the radio has
poor receiver sensitivity or the pre-selector parts have been replaced the following procedure should
be performed. The softpot value sets the control voltage of the pre-selector. Its value needs to be set
at 7 frequencies across the frequency range.
Set the test box (GTF180B) meter selection switch to the ÒAudio PAÓ position and connect a
SINAD meter to the ÒMETERÓ port.
2.
From the Service menu, select Rx Alignment.
3.
Select Front End Filter to open the pre-selector tuning window. The window will indicate the
receive test frequencies to be used.
4.
Select the Þrst test frequency shown, and set the corresponding value to the start value shown
in Table 3-5.
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5.
Set the RF test generator to the receive test frequency, and set the RF level to 10µV modulated
with a 1kHz tone at the normal test deviation shown in table 3-6.
6.
Measure the RSSI voltage at accessory connector pin 15 with a dc voltmeter capable of 1 mV
resolution. The RSSI output is available on A2, 4 channel, radios but it is unbuffered. Therefore
a high impedance (1 MW) voltmeter must be used.
7.
Decrease/increase the softpot value and note the RSSI voltage. The target softpot value is
achieved when the voltage change between 2 softpot steps is lower than 0.75% of the RSSI
voltage for the Þrst time. Set test box (GTF180B) audio switch to the ÒSPKRÓ position. The 1kHz
tone must be audible at the target value to make sure the radio is receiving.
8.
Repeat steps 4 - 7 for all test frequencies shown in the window.
9.
Press Program to store the softpot values.
Maintenance
3-11
Table 3-5 Start Value for Front-End Pre-selector Tuning.
RF-Band
Start Value
UHF
VHF
Maximum
Minimum
Table 3-6 Normal Test Deviation.
12.5 kHz
20 kHz
25 kHz
1.5 kHz
2.4 kHz
3 kHz
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Deviation
Rated Volume
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7.7
Channel Spacing
The rated volume softpot sets the volume at normal test modulation.
2.
3.
Select Rated Volume to open the rated volume tuning window. The screen will indicate the
receive test frequency to be used.
4.
Set the RF test generator to the receive test frequency, and set the RF level to 1mVolt
modulated with a 1kHz tone at the normal test deviation shown in table 3-6. Set test box
(GTF180B) audio switch to the ÒSPKRÓ position. The 1kHz tone must be audible to make sure
the radio is receiving.
5.
Adjust the value of the softpot to obtain rated audio volume (as close to 3.74 Vrms)
Note: The voltage at the meter port of the testbox GTF180B is only half the voltage at the
speaker.
6.
Press Program to store the softpot value.
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Set test box (GTF180B) meter selection switch to the ÒAUDIO PAÓ position and the speaker
load switch to the ÒMAXARÓ position. Connect an AC voltmeter to the test box meter port.
Squelch
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7.8
1.
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The squelch softpots set the signal to noise ratio at which the squelch opens. The squelch value
needs to be set at 7 frequencies across the frequency range. For 20/25kHz radios, the radio stores
separate tuning data for 20kHz and 25kHz channel spacing. Therefore, both sets of tuning data
should be set independently.
3-12
1.
Set the test box (GTF180B) meter selection switch to the ÒAudio PAÓ position and connect a
SINAD meter to the ÒMETERÓ port.
2.
3.
Select ÔSquelchÕ to open the squelch tuning window. This window is used to set the values for
12.5kHz radios and the 25kHz data for 20/25kHz radios. The window will indicate the receive
4.
Select the Þrst test frequency shown, and set the corresponding value to 0.
5.
Set the RF test generator to the test frequency and modulate the signal generator at the normal
test deviation shown in table 3-6, with 1kHz tone. Adjust the generator for a 8-10 dB SINAD
level (weighted with psophometric Þlter).
Maintenance
6.
Adjust the softpot value until the squelch just closes.
7.
Monitor for squelch chatter; if chatter is present, repeat step 6.
8.
When no chatter is detected, select the next softpot and repeat steps 4 - 7 for all test
frequencies shown in the window.
9.
10. If the radio is a 20/25kHz channel spacing model, repeat steps 1 - 10 for 20kHz channel
spacing using the ÔSquelch (20kHz)Õ window.
7.9
Transmit Deviation Limit
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The transmit deviation limit softpot sets the maximum deviation of the carrier. Unlike other radios,
the deviation limit for GM950E/GM950i is set using low frequency (PL) rather than the usual 1kHz
tone. The deviation value needs to be set at 7 frequencies across the frequency range. No audio
signals need to be injected, as the radio generates a 82.5Hz tone while the deviation limit alignment
window is open. This tone is used to set the maximum deviation. For 20/25kHz radios, the radio
stores separate tuning data for 20kHz and 25kHz channel spacing. Therefore, both sets of tuning
data should be set independently.
2.
Select Reference Deviation to open the reference deviation tuning window.
3.
Set the value to 7 and press Program to store the softpot value.
4.
5.
Select ÔDeviation LimitÕ to open the deviation limit tuning window. This window is used to set the
values for 12.5kHz radios and the 25kHz data for 20/25kHz radios. The window will indicate the
transmit test frequencies to be used.
6.
Select the Þrst test frequency shown in the window.
7.
8.
Adjust the transmitter deviation to the value shown in table 3-7.
9.
Press Toggle PTT to dekey the radio.
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10. Repeat steps 6 - 9 for the remaining test frequencies.
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spacing using the ÔDeviation Limit (20kHz)Õ window.
Maintenance
Table 3-7 Transmitter Deviation Limit Alignment Target.
Channel Spacing
Deviation
12.5 kHz
375 Hz
20 kHz
600 Hz
25 kHz
750 Hz
3-13
7.10
Transmit Modulation Balance (Compensation)
Compensation alignment balances the modulation sensitivity of the VCO and reference modulation
(synthesizer low frequency port) lines. Compensation algorithm is critical to the operation of
signalling schemes that have very low frequency components (e.g. PL) and could result in distorted
waveforms if improperly adjusted. The compensation value needs to be set at 7 frequencies across
the frequency range. For 20/25kHz radios, the radio stores separate tuning data for 20kHz and
25kHz channel spacing. Therefore, both sets of tuning data should be set independently.
2.
Select ÔModulation BalanceÕ to open the deviation balance tuning window. This window is used
to set the values for 12.5kHz radios and the 25kHz data for 20/25kHz radios. The window will
indicate the transmit test frequencies to be used.
3.
Set the Test Box (GTF180B) meter selector switch to the ÒGENÓ position, and inject a 2kHz (two
kilohertz) tone at 800 mVrms (eight-hundred millivolts) into the ÒAudio InÓ port.
4.
Connect an AC meter to the meter port to insure the proper input signal level.
5.
Select the Þrst test frequency shown in the window.
6.
7.
Measure the transmitter deviation.
8.
Adjust the transmitter deviation using the appropriate softpot to the value shown in Table 3-8.
9.
Press Toggle PTT to dekey the radio.
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10. Repeat steps 5- 9 for the remaining test frequencies.
spacing using the ÔModulation Balance (20kHz)Õ window.
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Table 3-8 Transmitter Deviation.
12.5 kHz
2.1-2.2 kHz
20 kHz
3.4-3.5 kHz
25 kHz
4.3-4.5 kHz
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Deviation
Transmit Control Voltage Limit
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7.11
Channel Spacing
The transmit control voltage limit softpot sets the maximum power control voltage. All 7 voltage limit
softpots are tuned and programmed automatically when the Program button is pressed.
3-14
1.
2.
Select Control Voltage Limit to open the control voltage limit tuning window.
3.
Set the Power Factor to 1.3.
4.
Maintenance
Table of Contents
Chapter 4
Theory of Operation
t
Table of Contents
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Paragraph
Page
Overview..................................................................................................... 1
2.0
Controller.................................................................................................... 2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
General ........................................................................................................
Voltage Regulators ......................................................................................
Electronic On/Off .........................................................................................
Mechanical On/Off .......................................................................................
Ignition .........................................................................................................
Hook ............................................................................................................
Microprocessor Clock Synthesizer ..............................................................
Serial Peripheral Interface (SPI) ..................................................................
SBEP Serial Interface ..................................................................................
General Purpose Input/Output.....................................................................
Normal Microprocessor Operation...............................................................
Control Head Model A2 or A3......................................................................
3.0
General ....................................................................................................... 7
3.1
3.2
Audio Filter IC (AFIC) .................................................................................. 7
Audio Ground............................................................................................... 7
4.0
Transmit Audio Circuits............................................................................. 7
4.1
4.2
4.3
4.4
Mic Input Path..............................................................................................
External Mic Path.........................................................................................
PTT Sensing and TX Audio Processing ......................................................
Option Board Audio (GM950i only)..............................................................
5.0
Transmit Signalling Circuits ................................................................... 10
5.1
5.2
Sub-audible Data (PL/DPL) ....................................................................... 10
High Speed Data and DTMF ..................................................................... 11
2
2
3
3
3
4
4
4
5
5
5
6
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8.
1.0
Theory of Operation
7
8
8
9
4-i
Table of Contents
6.0
Receive Audio Circuits............................................................................ 12
6.1
6.2
6.3
6.4
6.5
6.6
6.7
Squelch Detect ..........................................................................................
Audio Processing and Digital Volume Control ...........................................
Audio Amplification Speaker (+) Speaker (-) .............................................
Handset Audio ...........................................................................................
Filtered Audio ............................................................................................
Discriminator Audio (Unfiltered).................................................................
Option Board Audio ...................................................................................
7.0
Receive Signalling Circuits..................................................................... 15
7.1
7.2
7.3
Sub-audible Data Decoder (PL/DPL) ........................................................ 15
High Speed Data Decoder......................................................................... 15
Alert Tone Circuits ..................................................................................... 16
8.0
Receiver Front-End.................................................................................. 17
8.1
8.2
8.3
Front-End Band-Pass Filter & Pre-Amplifier .............................................. 17
Mixer and Intermediate Frequency (IF) Section ........................................ 17
IF IC (U5201) ............................................................................................. 18
9.0
Power AmpliÞer (PA) 5-25W. ................................................................... 18
9.1
9.2
9.3
9.4
9.5
9.6
Power Controlled Stage.............................................................................
PA Stages..................................................................................................
Directional Coupler ....................................................................................
Antenna Switch..........................................................................................
Harmonic Filter ..........................................................................................
Power Control ............................................................................................
10.0
Frequency Synthesis............................................................................... 21
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10.1
10.2
10.3
10.4
12
13
13
14
14
14
14
Reference Oscillator ..................................................................................
Fractional-N Synthesizer (U7501) .............................................................
Voltage Controlled Oscillator (VCO) ..........................................................
Synthesizer Operation ...............................................................................
18
19
19
19
20
20
21
21
22
22
11.0
11.1
11.2
11.3
Front-End Band-Pass Filter and Pre-Amplifier .......................................... 24
IF IC (U5201) ............................................................................................. 25
4-ii
Theory of Operation
Table of Contents
Power AmpliÞer (PA) 5-25W ................................................................... 25
12.1
12.2
12.3
12.4
12.5
12.6
Power Controlled Stage ............................................................................
PA Stages .................................................................................................
Directional Coupler ...................................................................................
Antenna Switch .........................................................................................
Harmonic Filter..........................................................................................
Power Control ...........................................................................................
13.0
Frequency Synthesis .............................................................................. 28
13.1
13.2
13.3
13.4
Reference Oscillator .................................................................................
Fractional-N Synthesizer (U3701).............................................................
Voltage Controlled Oscillator (VCO) .........................................................
Synthesizer Operation ..............................................................................
25
26
26
26
27
27
28
28
29
29
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12.0
Theory of Operation
4-iii
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Table of Contents
4-iv
Theory of Operation
Overview
1.0
Overview
This section provides a detailed theory of operation for the radio and its components.
The main radio is designed to accept one additional option board. This may provide functions such
as secure voice/or a signalling decoder.
The control head is mounted directly on the front of the radio. The control head contains a speaker,
LED indicators, a microphone connector, buttons and dependant of radio type, a display. These
provide the user with interface control over the various features of the radio.
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In addition to the power cable and antenna cable, an accessory cable can be attached to a
connector on the rear of the radio. The accessory cable provides the necessary connections for
items such as external speaker, foot operated PTT, ignition sensing, etc.
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4
Theory of Operation
4-1
Controller
2.0
Controller
2.1
General
The radio controller consists of 4 main subsections:
■
■
■
t
■
Digital Control
Audio Processing
Power Control
Voltage Regulation
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The digital control section of the radio board is based upon a closed architecture controller
conÞguration.
16
8.
The digital section consists of a microprocessor, support memory, support logic, signal MUX ICs, the
On/Off circuit, and general purpose Input/Output circuitry.
Note:
2.2
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The closed architecture controller uses the Motorola 68HC11E9 (U0101) for a GM950E radio and
the 68HC11E20 for a GM950i radio. In this conÞguration RAM and ROM are contained within the
microprocessor itself. The only external memory device in the closed architecture controller is an
EEPROM (2KByte for GM950i).
From this point on the 68HC11E9 or E20 microprocessor will be referred to as E9/20mP or
mP. References to a Control Head will be to radio model A3 (Display radio).
Voltage Regulators
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Voltage regulation for the controller is provided by 3 separate devices; U0631 (LP2951CM) +5V,
U0601 (LM2941T) +9.3V, and UNSW 5V (a combination of R0621 and VR0621). An additional
regulator is located in the RF section.
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Voltage regulation providing 5V for the digital circuitry is done by U0631. Input and output capacitors
(C0631/0632 and C0633-0635) are used to reduce high frequency noise and provide proper
operation during battery transients. This regulator provides a reset output (pin 5) that goes to 0 volts
if the regulator output goes out of regulation. This is used to reset the controller to prevent improper
operation. Diode D0631 prevents discharge of C0632 by negative spikes on the 9V3 voltage
Regulator U0601 is used to generate the 9.3 volts required by some audio circuits, the RF circuitry
and power control circuitry. Input and output capacitors (C0601-0603 and C0604/0605) are used to
reduce high frequency noise. R0602/R0603 sets the output voltage of the regulator. If the voltage at
pin 1 is greater than 1.3 volts the regulator output decreases and if the voltage is less than 1.3 volts
the regulator output increases. This regulator output is electronically disabled by a 0 volt signal on
pin 2. Q0601 and associated circuitry (R0601/0604/0605 and C0606) are used to disable the
regulator when the radio is turned off.
UNSW 5V is only used in a few areas which draw low current and requires 5 V while the radio is off.
UNSW 5V CL is used to buffer the internal RAM. C0622 allows the battery voltage to be
disconnected for a couple of seconds without losing RAM parameters. Diode D0621 prevents radio
circuitry from discharging this capacitor.
4-2
Theory of Operation
Controller
The voltage 9V3 SUPP is only used in the VHF radio to supply the drain current for the RF MOS
FET in the PA.
The voltage SW B+ is monitored by the mP through the voltage divider R0641/R0642. Diode VR0641
limits the divided voltage to 5.1V to protect the mP.
Diode D5601 (UHF) / D3601 (VHF) located on the PA section acts as protection against transients
and wrong polarity of the supply voltage.
2.3
Electronic On/Off
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The radio has circuitry which allows radio software and/or external triggers to turn the radio on or off
without direct user action. For example, automatic turn on when ignition is sensed and off when
ignition is off.
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Q0611 is used to provide SW B+ to the various radio circuits. Q0611 acts as an electronic on/off
switch controlled by Q0612. The switch is on when the collector of Q0612 is low. When the radio is
off Q0612 is cutoff and the voltage at Q0611-base is at A+. This effectively prevents current ßow
through Q0611 from emitter to collector. When the radio is turned on the voltage at the base of
Q0612 is high (about 0.6V) and Q0612 switches on (saturation) and pulls down the voltage at
Q0611-base. With Transistor Q0611 now enabled current ßows through the device. This path has a
very low impedance (less than 1 ohm) from emitter to collector. This effectively provides the same
voltage level at SWB+ as at A+.
2.4
Mechanical On/Off
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The electronic on/off circuitry can be enabled by the microprocessor (through AFIC port GCB1, line
B+ CONTROL), the mechanical On/Off button on the control head (line ON OFF CONTROL), or the
ignition sense circuitry (line IGNITION CONTROL). If any of the 3 paths cause a low at the collector
of Q0612, the electronic ON is engaged.
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This refers to the on/off button, located on the control head, and which turns the radio on and off. If
the radio is turned off and the on/off button is pressed, line ON OFF CONTROL goes high and
switches the radio on as long as the button is pressed. The microprocessor is alerted through line
ANALOG 3 which is pulled to low by Q0925 (Control Head Model A3) while the on/off button is
pressed. If the software detects a low state it asserts B+ CONTROL via AFIC pin 39 low which
keeps Q0612 and Q0611, and in turn the radio switched on.
If the on/off button is pressed and held while the radio is on, the software detects the line ANALOG
3 changing to low and switches the radio off by setting B+ CONTROL to low.
2.5
Ignition
Ignition sense is used to prevent the radio from draining the vehicleÕs battery because the engine is
not running.
When the IGNITION input (J0400- 10) goes above 6 volts Q0421 and Q0612 turn on. This turns on
SW B+ by turning on Q0611 via line IGNITION CONTROL and Q0612 and the microprocessor
starts execution. The software reads the line IGNITION SENSE, determines from the level that the
IGNITION input is active and sets the B+ CONTROL output of the AFIC pin 39 to high to latch on
SW B+.
Theory of Operation
4-3
Controller
When the IGNITION input goes below 6 volts, Q0421 switches off and R0426, R0427 pull line
IGNITION SENSE high. The software is alerted by line IGNITION SENSE to switch off the radio by
setting B+ CONTROL to low. The next time the IGNITION input goes above 6 volts the above
process will be repeated.
2.6
Hook
2.7
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The HOOK input is used to inform the mP when the Microphone«s hang-up switch is engaged.
The signal is routed from J0101-3 and transistor Q0137 to the E9/20mP U0101-56. The voltage
range of HOOK in normal operating mode is 0-5V. If a rear GP input line is set as HOOK then the
front HOOK signal is overriden.
Microprocessor Clock Synthesizer
Serial Peripheral Interface (SPI)
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8.
The controller uses the oscillator in the microprocessor E9/20µP along with some external
components (C0115-C0117, L0114, R0115, Y0114) to generate the clock. Q0114 is used to alter
the clock frequency slightly under software control if there is a possibility of harmonics of this clock
source interfering with the desired radio receive frequency.
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The µP communicates to many of the ICÕs through its SPI port. This port consists of SPI TRANSMIT
DATA (MOSI) (E9/20µP:U0101-52), SPI RECEIVE DATA (MISO) (E9/20µP:U0101-51), SPI CLK
(E9/20µP:U0101-53) and chip select lines going to the various ICÕs, connected on the SPI PORT
(BUS). This BUS is a synchronous bus, in that the timing clock signal CLK is sent while SPI data
(SPI TRANSMIT DATA or SPI RECEIVE DATA) is sent. Therefore, whenever there is activity on
either SPI TRANSMIT DATA or SPI RECEIVE DATA there should be a uniform signal on CLK. The
SPI TRANSMIT DATA is used to send serial from a µP to a device, and SPI RECEIVE DATA is used
to send data from a device to a µP. The only device from which data can be received via SPI
RECEIVE DATA is the EEPROM (U0108)
On the controller there are three ICs on the SPI BUS, AFIC (U103-33), EEPROM (U0108-1) and
D/A (U0731-6). In the RF sections there is one IC on the SPI BUS, the FRAC-N Synthesizer. The
SPI TRANSMIT DATA and CLK lines going to the RF section are Þltered by L0194/L0195 to
minimize noise. The chip select lines for the IC«s are decoded by the address decoder U102.
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The SPI BUS is also used for the control head. U0104-1,2 buffer the SPI TRANSMIT DATA and CLK
lines to the control head. U0104-3 switches off the CLK signal for the LCD display if it is not selected
via LCD CE.
When the µP needs to program any of these ICÕs it brings the chip select line for that IC to a logic 0
and then sends the proper data and clock signals. The amount of data sent to the various ICÕs are
different, for example the FRAC-N can receive up to 13 bytes (97 bits) while the DAC can receive up
to 3 bytes (24 bits). After the data has been sent the chip select line is returned to a logic 1.
The Option board interfaces are different in that the µP can also read data back from devices
connected.
4-4
Theory of Operation
Controller
The timing and operation of this interface is speciÞc to the option connected, but generally follows
the pattern:
1) an option board device generates the interrupt,
2) main board asserts a chip select for that option board device,
3) the main board µP generates the CLK, and
4) when data transfer is complete the main board terminates the chip select and CLK activity.
2.9
SBEP Serial Interface
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The SBEP serial interface allows the radio to communicate with the Radio Service Software (RSS).
This interface connects to the Microphone connector (J0903/J0803) via Control Head connector
(J0101) and comprises BUS+ (J0101-15). The line is bi-directional, meaning that either the radio or
the RSS can drive the line.
General Purpose Input/Output
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When the RSS needs to communicate with the radio, an interrupt is generated by the BUS+ signal
through R0104. The µP then starts serial data communication on BUS+ by sending data from pin 50
through D0101 and receiving data at pin 47 through R0104. While the radio is sending serial data at
pin 50 it receives an ÓechoÓ of the same data at pin 47.
The Controller provides six general purpose lines (GP1 through GP6) available on the accessory
connector J0400 to interface to external options. Lines GP1,4 are inputs, GP2 is an output and
GP3,5,6 are bidirectional. The software and the hardware conÞguration of the radio model deÞne the
function of each port. Some ports are not connected on GM950E radio, refer to appendix B.
GP1 can be used as external PTT input or others, set by the RSS.
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GP2 can be used as normal output (Q0441 placed) or external alarm output (Q0442 placed). The
voltage range can be set by R0442 (0-5V) or R0443 (0 - supply voltage).
GP4 can be used as normal input (D0471, R0477 not placed) or emergency input (D0471, R0477
placed).
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GP3,5,6 are bidirectional and use the same circuit conÞguration. Each port uses an output transistor
controlled by µP port PB5,4,7 and an input transistor read by µP port PC2,5,3. To use one of the
GP«s as input the µP must turn off the corresponding output transistor.
In addition the signals from GP3-6 are fed to the option board connectors J0102, J0103.
The 470pF and 10nF capacitors serve to Þlter out any AC noise which may ride on the GP lines.
2.11
Normal Microprocessor Operation
The E9/20µP (U0101) contains internal 12 (E9) or 20 (E20) Kilobytes ROM, 512 (E9) or 768 (E20)
bytes SRAM and 512 bytes EEPROM.
The E9/20µP RAM is always powered to maintain parameters such as the last operating mode. This
is achieved by maintaining 5V at U0101-25. Under normal conditions, when the radio is off UNSW
+5V is formed by FLT A+ running to D0621.
Theory of Operation
4-5
Controller
C0622 allows the battery voltage to be disconnected for a couple of seconds without losing RAM
parameters. Diode D0621 prevents radio circuitry from discharging this capacitor.
U0101-22 is the high reference voltage for the A/D ports on the E9/20µP. Resistor R0105 and
capacitor C0105 Þlter the +5V reference. If this voltage is lower than +5V the A/D readings will be
incorrect. Likewise U0101-21 is the low reference for the A/D ports. This line is normally tied to
ground. If this line is not connected to ground, the A/D readings will be incorrect.
The MODB (U0101-25) input of the E9/20µP must be at a logic 1 for it to start executing correctly.
The XIRQ (U0101-45) and the IRQ (U0101-46) pins should also be at a logic 1.
Control Head Model A2 or A3
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Optional external EEPROM (U0108) is available on some radio models. The external EEPROM is
accessed through a serial connection. The E9/20µP generates SPI CLK (U0101-53), SPI
TRANSMIT DATA (MOSI) (U0101-52) and SPI RECEIVE DATA (MISO) (U0101-51) to read or write
EEPROM. On a read of EEPROM the E9/20µP continues generating the clock and the EEPROM
places the requested data on the SPI RECEIVE DATA (MISO) line. On a write the message is
followed by the data to be written to the EEPROM.
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Two Control Head versions (A2 or A3) are available for user interface. Both Control Heads contain
the internal speaker, the microphone connector, several buttons to operate the radio and several
indicator LEDs to inform the user about the radio status. Additionally the Control Head model A3
uses a 3 digit, 7 segment, LCD display for the channel number.
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The On/Off button when pressed switches the voltage regulators on by pulling ON OFF CONTROL
to high and connects the base of Q0925(A3), Q0825(A2) to FLT A+. This transistor pulls the line
ANALOG 3 to low to inform the µP that the On/Off button is pressed. If the radio is switched off, the
µP will switch it on and vice versa. All other buttons work the same way. If a button is pressed, it will
connect one of the 3 lines ANALOG 1,2,3 to a resistive voltage divider connected to +5V. The
voltages of the lines are A/D converted inside the µP and specify the pressed button.
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All the back light and indicator LEDs are driven by current sources and controlled by the µP via
SERIAL PERIPHERAL INTERFACE (SPI) interface. The LED status is stored in shiftregister
U0941(A3), U0841(A2). Line LED CE enables the serial write process via Q0941(A3), Q0841(A2)
while line LED CLCK BUF shifts the data of line SPI DATA BUF into the shiftregister.
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In addition Control Head Model A3 contains the LCD display H0931. The display data of line SPI
DATA BUF is shifted into the display driver by clock signal LCD CLCK BUF.
4-6
Theory of Operation
General
CONTROLLER BOARD AUDIO AND SIGNALLING CIRCUITS
3.0
General
3.1
Audio Filter IC (AFIC)
The AFIC (U0103) used in the controller performs RX/TX audio shaping, i.e. Þltering, ampliÞcation,
attenuation.
Audio Ground
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The AFIC is programmable through the SPI BUS (U0103-30/31/33), normally receiving 6 bytes. This
programming sets up various paths within the AFIC to route audio signals through the appropriate
Þltering, gain and attenuator blocks. The AFIC also has 4 General Control Bits GCB1,3-5 which are
CMOS level outputs. GCB1 is used to switch the radio on and off under µP control via line B+
CONTROL. GCB3 is used to switch the audio PA on and off (AUDIO PA ENABLE). GCB4 selects
between the UNATTEN RX OUT audio signal and the unÞltered DET AUDIO signal. GCB5 HIGH
LOW BAND can be used to switch between band splits.
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Transmit Audio Circuits
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VAG is the dc bias used as an audio ground for the op-amps that are external to the Audio Filter IC
(AFIC). U0105-1 forms this bias by dividing 9.3V with resistors R0171, R0172 and buffering the
4.65V result with a voltage follower. VAG emerges at pin 1 of U0105-1. C0172 is a bypass capacitor
for VAG. The AFIC generates its own 2.5 V bias for its internal circuitry. C0153 is the bypass for the
AFICÕs audio ground dc bias. Note that while there are AFIC VAG, and BOARD VAG (U0105-1) each
of these are separate. They do not connect together.
Refer to Figure 4-1 for reference for the following sections.
4.1
Mic Input Path
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The radio supports 2 distinct microphone paths known as internal and external mic and an auxiliary
path (FLAT TX AUDIO). The microphones used for the radio require a DC biasing voltage provided
by a resistive network.
These two microphone audio inputs are connected together. Following the internal mic path; the
microphone is plugged into the radio control head and is connected to the controller board via
J0101-16. From here the signal is routed to C0142. R0141 and R0142 provide the 9.3VDC bias.
R0142 and C0141 provide a 1kW AC path to ground that sets the input impedance for the
microphone and determines the gain based on the emitter resistor in the microphoneÕs ampliÞer
circuit.
The MIC signal is routed to the AFIC«s TX IN input (U0103-10) through R0146 and R0145 (4
channel radio) or through op-amp buffer U0106-2 and option board connector J0103-3,1 (128
channel radio). The audio signal at the output of U0106-2 should be approximately 80mV deviation
with 25kHz channel spacing.
Theory of Operation
4-7
The FLAT TX AUDIO signal from accessory connector U0400-5 is buffered by op-amp U0106-1 and
fed to the AFIC U0103-13 through gate U0107-1. Gate U0107-1 is controlled by the µP port PC7
(U0101-42) and selects between FLAT TX AUDIO or signalling signal created by the µP.
J0101
J0103-3
IN
OPTION
BOARD
OUT
J0103-1
9
10
CONTROL HEAD
CONNECTOR
2
13 TX IN
5
FLAT TX
AUDIO
LIMITER
SPLATTER
FILTER
16
EXT MIC
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ACCESSORY
CONNECTOR
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4-BIT
DEVIATION
ATTENUATOR
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5-BIT
DEVIATION
ATTENUATOR
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TO
RF
SECTION
(SYNTHESIZER)
MOD IN
20
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PREEMPHASIS
J0400
8.
MIC
4.2
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Figure 4-1 Transmit Audio Paths
External Mic Path
4.3
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The external microphone signal enters the radio on accessory connector J0400 pin 2 and connects
to the standard microphone input through R0421.
PTT Sensing and TX Audio Processing
Mic PTT is sensed by the µP U0101 pin 22. An external PTT can be generated by grounding pin 3
on the accessory connector if this input is programmed for PTT.
The MIC signal is routed to the AFIC (U0103) through R0146 and R0145 (4 channel radio) or
through op-amp buffer U0106-2 and option board connector J0103-3,1 (128 channel radio). R0145,
C0145, the ampliÞer inside the AFIC (pins 9,10) and gain setting resistor R0147 pre-emphasise the
MIC audio signal. After further limiting and Þltering the modulation signal emerges from the AFIC at
U0103-19/20. Both signals are weighted by resistors R0181, R0182 and add up to signal MOD IN.
4-8
Theory of Operation
4.4
Option Board Audio (GM950i only)
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The audio coming from the microphone (J0101-16) or the external microphone (J0400-2) is routed
through op-amp buffer U0106-2 (128ch only) to the option board connector J0103-3. After option
board processing the signal emerges at J0103-1. The source resistor of the option board output and
C0145, the ampliÞer inside the AFIC (U0103-9,10) and gain setting resistor R0147 pre-emphasise
the signal. Inside the AFIC the signal follows a path identical to conventional transmit audio. The
modulation signal emerges from the AFIC at J0103-19/20. Both signals are weighted by resistors
R0181, R0182 and add up to signal MOD IN.
Theory of Operation
4-9
Transmit Signalling Circuits
5.0
Refer to Figure 4-2 for reference for the following sections. From a hardware point of view, there are
three types of signalling:
1.
Sub-audible data (PL / DPL / Connect Tone) that gets summed with transmit voice or signalling,
2.
DTMF data for telephone communication in trunked and conventional systems, and
3.
Audible signalling including Select 5, MPT-1327, MDC, Single Tones.
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All three types are supported by the hardware while the radio software determines which signalling
type is available. Currently only PL/DPL and Single tones are supported in the software.
AUX TX
IN
39
GCB1
SPLATTER
FILTER
58
ASFIC U0201
U0101
PL
32 CLOCK
STROBE
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CONTROLLER
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SUMMER
PL
ENCODER
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TO RF
19, 20
SECTION
MOD IN (SYNTHESIZER)
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Figure 4-2 Transmit Signalling Paths
Sub-audible Data (PL/DPL)
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Sub-audible data implies signalling whose frequency is below 300Hz. Although it is referred to as
Ósub-audible data,Ó the actual frequency spectrum of these waveforms may be as high as 250 Hz,
which is audible to the human ear. However, the radio receiver Þlters out any audio below 300Hz, so
these tones are never heard in the actual system.
Only one type of sub-audible data can be generated by U0103 (AFIC) at any one time. The process
is as follows, using the SPI BUS, the µP programs the AFIC to set up the proper low-speed data
deviation and select the PL or DPL Þlters. The µP then generates a square wave which strobes the
AFIC PL / DPL encode input PL CLOCK STROBE U0103-32 at twelve times the desired data rate.
For example, for a PL frequency of 103Hz, the frequency of the square wave would be 1236Hz.
This drives a tone generator inside U0103 which generates a staircase approximation to a PL sine
wave or DPL data pattern. This internal waveform is then low-pass Þltered and summed with voice
or data. The resulting summed waveform then appears on U0103-19,20 (MOD IN), where it is sent
to the RF board as previously described for transmit audio.
4-10
Theory of Operation
5.2
High Speed Data and DTMF
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The High Speed Data and DTMF waveforms are created by the µP U0101 using summer U0105-3.
Op-amp U0105-3 and resistors R0121-R0124 add up the three signals coming from the µP pins 58,
59 and 62. The output signal of U0105-3 is routed to the AFIC (U0103-13) through gate U0107-1.
Inside the AFIC the signal enters the conventional transmitter audio path at the splatter Þlter input.
Gate U0107-1 controlled by µP port PC7 (U0101-42) selects between data signal and FLAT TX
AUDIO signal. Microphone audio is muted during High Speed Data signalling.
Theory of Operation
4-11
Receive Audio Circuits
6.0
ACCESSORY
CONNECTOR
11
FLAT RX AUDIO
J0400
1
SPKR +
16
SPKR -
1
EXTERNAL
SPEAKER
6
INT
SPKR-
INT
SPKR+
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AUDIO
PA
U0401
CONTROL
HEAD
CONNECTOR
2
8.
ATTEN.
1
16
J0101
23
IN 2 J0103-4
OUT
J0103-2
RX AUD OUT
UNAT
22 RX OUT
VOLUME
ATTEN.
7 RX IN
FILTER AND
PL IN DEEMPHASIS
AFIC
U0103
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J0103-5
INTERNAL
SPEAKER
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BOARD
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6 AUX
RX IN
TX
IF IC
U5201
DET AUDIO 28
23
21 OUT
DET AUDIO
(DISCRIMINATOR
AUDIO)
SQ IN
16
SQ LIM OUT
CSQ DET
15
18
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FAST SQ
20
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SQ RECT IN
SQUELCH ATTENUATOR
SQ OUT
18
15
MICRO CONTROLLER
U0101
CSQ DET
GEPD 5429
Figure 4-3 Receive Audio Paths.
Squelch Detect
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6.1
The IF IC controls the squelch characteristics of the radio. With a few external parts (R5222, C5229,
C5230, R5223) the squelch tail, hysteresis, attack and delay are optimized for the radio. To set the
squelch threshold the signal from IF IC pin 23 (line SQ ATT IN) is routed to the squelch attenuator
input of the AFIC (U0103-16). The attenuated signal (line SQ ATT OUT) from the AFIC (U0103-18)
enters the IF IC at pin 20 and is used to create a squelch indicator signal available at pin 15 (line
CSQ DET).
The microprocessor controlled ADAPT signal at pin 22 activates the fast squelch indicator signal at
IF IC pin 18 (FAST SQ). Both squelch indicator signals CSQ DET (pin 15) and FAST SQ (pin 18) are
combined, weighted by resistors R0111 / R012 and fed to one of the microprocessor«s ADCs
(U0101-15) for interpretation. From the voltage weighted by the resistors the µP determines whether
CSQ DET, FAST SQ or both are active.
4-12
Theory of Operation
6.2
Audio Processing and Digital Volume Control
The receiver audio signal enters the controller section from the IF IC (U5201-28) on DET AUDIO.
The signal is AC coupled by C0181 and enters the AFIC via the RX IN pin U0103-7.
Inside the AFIC the signal entering RX IN (U0103-7) goes through the audio path while the signal
entering PL DPL IN (U0103-8) via C0182 goes through the PL/DPL path.
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The audio path has a programmable ampliÞer, whose setting is based on the channel bandwidth
being received, then a LPF Þlter to remove any frequency components above 3000Hz and then an
HPF to remove any sub-audible data below 300Hz. Next, the recovered audio passes through a deemphasis Þlter if it is enabled (to compensate for Pre-emphasis which is used to reduce the effects
of FM noise). The IC then passes the audio through the 8-bit programmable attenuator whose level
is set depending on the value of the volume control. Finally, the Þltered audio signal passes through
an output buffer within the AFIC. The audio signal exits the AFIC at RX AUDIO U0103-23.
16
The µP programs the attenuator, using the SPI BUS, based on the volume setting. The minimum/
maximum settings of the attenuator are set by codeplug parameters.
Audio AmpliÞcation Speaker (+) Speaker (-)
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Since sub-audible signalling is summed with voice information on transmit, it must be separated
from the voice information before processing. Any sub-audible signalling enters the AFIC from the IF
IC at PL DPL IN U0103-8. Once inside it goes through the PL/DPL path. The signal Þrst passes
through one of 2 low pass Þlters, either PL low pass Þlter or DPL/LST low pass Þlter. Either signal is
then Þltered and goes through a limiter and exits the AFIC at PL DPL DECODER OUT U0103-27. At
this point the signal will appear as a square wave version of the sub-audible signal which the radio
received. The microprocessor (U0101-64) will decode the signal directly to determine if it is the tone/
code which is currently active on that mode.
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The output of the AFIC«s digital volume pot, U0103-23 is routed through a voltage divider formed by
R0401 and R0402 to set the correct input level to the audio PA (U0401). This is necessary because
the gain of the audio PA is 46 dB, and the AFIC output is capable of overdriving the PA unless the
maximum volume is limited.
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The audio then passes through C0401 which provides AC coupling and low frequency roll-off.
C0402 provides high frequency roll-off as the audio signal is routed to pins 1 and 9 of the audio
power ampliÞer U0401.
The audio power ampliÞer has one inverted and one non-inverted output that produces the
differential audio output SPK+ / SPK- (U0401-4/6). The inputs for each of these ampliÞers are pins 1
and 9 respectively; these inputs are both tied to the received audio. The audio PAÕs DC biases are
not activated until the audio PA is enabled at pin 8.
The audio PA is enabled via AUDIO PA ENABLE signal from the AFIC (U0103-40). When the base
of Q0401 is low, the transistor is off and U0401-8 is high, using pull up resistor R0406, and the Audio
PA is ON. The voltage at U0401-8 must be above 8.5VDC to properly enable the device. If the
voltage is between 3.3 and 6.4V, the device will be active but has its input (U0401-1/9) off. R0404
ensures that the base of Q0401 is high on power up. Otherwise there may be an audio pop due to
R0406 pulling U0401-8 high before the software can switch on Q0401.
Theory of Operation
4-13
The SPK+ and SPK- outputs of the audio PA have a DC bias which varies proportionately with FLT
A+ (U0401-7). FLT A+ of 11V yields DC offset of 5V, and FLT A+ of 17V yields a DC offset of 8.5V. If
either of these lines is shorted to ground, it is possible that the audio PA will be damaged. SPK+ and
SPK- are routed to the accessory connector (J400-16 and 1) and to the control head (connector
J0101-1 and 2).
6.4
Handset Audio
Certain hand held accessories have a speaker within them which require a different voltage level
than that provided by U0401. For those devices HANDSET AUDIO is available at J0101-14.
Filtered Audio
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The received audio from the output of the AFIC«s digital volume attenuator is also routed to U01054 pin 9 where it is ampliÞed 15 dB; this is set by the 10k/68k combination of R0154 and R0155. This
signal is routed from the output of the op amp U0105-4 pin 8 to J0101-14. The control head sends
this signal directly out to the microphone jack. The maximum value of this output is 6.6Vp-p.
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The AFIC has an audio whose output at U0103-22 has been Þltered and de-emphasized, but has
not gone through the digital volume attenuator. From AFIC U0103-22 the signal is routed through
gate U0107-2 and AC coupled to U0106-4. The gate controlled by AFIC port GCB4 (U0103-2)
selects between the Þltered audio signal from the AFIC or the unÞltered discriminator signal from the
IF IC U5201.The output at U0106-4 is then routed to J0400-11. Note that any volume adjustment of
the signal on this path must be done by the accessory.
Discriminator Audio (UnÞltered)
6.7
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Note that discriminator audio DET AUDIO from the IF IC U5201, in addition to being routed to the
AFIC, is also routed to the option connector J0103-5 (See Secure Rx description blocks for further
information).
Option Board Audio
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Discriminator or Þltered audio, enters the option board at connector J0103-5 and J0103-4. On the
option board, the signal may be processed and then fed back through (J0103-2) to AUX RX IN of the
AFIC (U0103-6). From then on it follows a path identical to conventional receive audio, where it is
Þltered (0.3 - 3kHz) and de-emphasized.
4-14
Theory of Operation
Receive Signalling Circuits
7.0
HIGH SPEED DATA
CENTER SLICER
U0105-2
22
1
UNATTEN
RX OUT
PL CLOCK 32
STROBE
t
U0101
LIMITER
DPL
TPL
24
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FILTER
PL DPL 27
DECODER
OUT
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DET AUDIO
DISCRIMINATOR AUDIO
FROM RF SECTION
(IF IC)
PL
DPL
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CONTROLLER
AFIC
U0103
8
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Figure 4-4 Receive Signalling Path.
7.1
Sub-audible Data Decoder (PL/DPL)
7.2
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The receiver audio signal entering the AFIC U0103 at pin 8 Þrst passes through the Tone PL Þlter or
the Digital PL Þlter, depending on the PL option selected for the current operating mode. Filtered PL
is then coupled to the PL detector circuit, with detected PL output at U0103-27. At this point the
signal will appear as a square wave version of the sub-audible signal which the radio received. The
microprocessor U0101-64 will decode the signal directly to determine if it is the tone / code which is
currently active on that mode.
High Speed Data Decoder
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The unattenuated receiver audio signal from U0103-22 is AC coupled to the input of centre slicer
circuit U0105-2. The non-inverting input of op-amp U0105-2 is fed through resistor R0162. Capacitor
C0164 sets a low-pass corner frequency of 3.3kHz. The inverting input of op-amp U0105-2 is fed
through resistor R0163. Capacitor C0163 sets a low-pass corner frequency of 16Hz.
During operation, R0163 / C0163 establish an average DC offset level at U0105-2 pin 6 dependent
on the average DC level of the undetected signal to set the ÒtriggerÓ threshold of U0105-2. R0162 /
C0164 provide high audio frequency roll-off to improve falsing immunity, but passes 600 or 1200
baud signals. The detected output from the centre slicer circuit is buffered and inverted by Q0161
and then coupled to the µP U0101-1 where algorithms perform the Þnal decoding.
Theory of Operation
4-15
7.3
Alert Tone Circuits
When the software determines that it needs to give the operator an audible feedback (for a good key
press, or for a bad key press), or radio status , it sends an alert tone to the speaker.
It does so by sending SPI BUS data to U0103 which sets up the audio path to the speaker for alert
tones. The alert tone itself is generated by the AFIC.
The allowable internal alert tones are 410, 820, and 1640Hz. In this case a code contained within
the SPI BUS load to the AFIC sets up the path and determines the tone frequency, and at what
volume level to generate the tone. (It does not have to be related to the voice volume setting).
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Inside the AFIC, this signal is routed to the alert tone generator; the output of the generator is
summed into the audio chain just after the RX audio de-emphasis block. Inside U0103 the tone is
ampliÞed and Þltered, then passed through the 8-bit digital volume attenuator, which is typically
loaded with a special value for alert tone audio. The tone exits at U0103-23 and is routed to the
audio PA like receive audio.
4-16
Theory of Operation
Receiver Front-End
UHF SPECIFIC CIRCUIT DESCRIPTION
8.0
Receiver Front-End
The receiver is able to cover the UHF range from 403 to 470 MHz. It consists of four major blocks:
front-end, mixer, Þrst IF section and IF IC. Antenna signal pre-selection is performed by two varactor
tuned bandpass Þlters. A double balanced shottky diode mixer converts the signal to the Þrst IF at
45.1 MHz.
Front-End Band-Pass Filter & Pre-AmpliÞer
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8.1
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Two crystal Þlters in the Þrst IF section and two ceramic Þlters in the second IF section provide the
required selectivity. The second IF at 455 kHz is mixed, ampliÞed and demodulated in the IF IC. The
processing of the demodulated audio signal is performed by an audio processing IC located in the
controller section.
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A two pole pre-selector Þlter tuned by the varactor diodes D5301 and D5302 pre-selects the
incoming signal (PA RX) from the antenna switch to reduce spurious effects to following stages. The
tuning voltage (FE CNTL VLTG) ranging from 2 volts to 8 volts is controlled by a Digital to Analog
(D/A) converter (U0731-11) in the controller section. A dual hot carrier diode (D5303) limits any
inband signal to 0 dBm to prevent damage to the pre-ampliÞer.
The RF pre-ampliÞer is an SMD device (Q5301) with collector base feedback to stabilize gain,
impedance, and intermodulation. The collector current of approximately 11-16 mA is drawn from the
voltage 9V3.
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A second two pole varactor tuned bandpass Þlter provides additional Þltering to the ampliÞed signal.
The varactor diodes D5304 and D5305 are controlled by the same signal which controls the preselector Þlter. A following 3 dB pad (R5310, R5314, R5316) stabilizes the output impedance and
intermodulation performance.
If the UHF radio is conÞgured for a base station application, R5319 is not placed and TP5301 and
TP5302 are shorted.
Mixer and Intermediate Frequency (IF) Section
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8.2
The signal coming from the front-end is converted to the Þrst IF (45.1 MHz) using a double balanced
schottky diode mixer (D5401). Its ports are matched for incoming UHF signal conversion to the
45.1MHz IF using low side injection. The injection signal (VCO MIXER) coming from the mixer buffer
(Q5771) is Þltered by the lowpass consisting of (L5403, L5404, C5401 - C5403) and has a level of
approximately 10 dBm.
The mixer IF output signal (RX IF) from transformer T5401 pin 2 is fed to the Þrst two pole crystal
Þlter Y5201. The Þlter output in turn is matched to the following IF ampliÞer.
The IF ampliÞer Q5201 is actively biased by a collector base feedback (R5201, R5202) to a current
drain of approximately 5 mA drawn from the voltage 5V STAB. Its output impedance is matched to
the second two pole crystal Þlter Y5202. A dual hot carrier diode (D5201) limits the Þlter output
voltage swing to reduce overdrive effects at RF input levels above -27 dBm.
Theory of Operation
4-17
Power AmpliÞer (PA) 5-25W.
8.3
IF IC (U5201)
The Þrst IF signal from the crystal Þlters feeds the IF IC (U5201) at pin 6. Within the IF IC the
45.1MHz Þrst IF signal mixes with the second local oscillator (LO) at 44.645MHz to the second IF at
455 kHz. The second LO uses the external crystal Y5211. The second IF signal is ampliÞed and
Þltered by two external ceramic Þlters (FL5201, FL5202). Back in the IF IC the signal is demodulated
in a phase-lock detector and fed from IF IC pin 28 to the audio processing circuit AFIC U0103
located in the controller section (line DET AUDIO).
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The IF IC also controls the squelch characteristics of the radio. With a few external parts (R5222,
C5229, C5230, R5223) the squelch tail, hysteresis, attack and delay were optimized for the radio. To
set the squelch threshold the signal from IF IC pin 23 (line SQ ATT IN) is attenuated by a
microprocessor controlled audio processing IC AFIC (U0103) located in the controller section. The
attenuated signal from the AFIC (line SQ ATT OUT) enters the IF IC at pin 20 and is used to create
a squelch indicator signal available at pin 15 (CSQ DET).
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combined, weighted by R0111 / R0112 and fed to the microprocessor U0101 pin 15 for
interpretation. From the voltage weighted by the resistors the µP determines whether CSQ DET,
FAST SQ or both are active.
9.0
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At IF IC pin 11 an RSSI signal is available with a dynamic range of 70 dB. The RSSI signal is
buffered by op-amp U0106-3 and available at accessory connector J0400-15.
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The radioÕs 5-25 W PA is a four stage ampliÞer used to amplify the output from the exciter to the
radio transmit level. It consists of four stages in the line-up. The Þrst (Q5510) is a bipolar stage that is
controlled via the PA control line. It is followed by another bipolar stage (Q5520), a MOS FET stage
(Q5530) and a Þnal bipolar stage (Q5536).
Devices Q5510 and Q5520 are surface mounted. MOS FET Q5530 and bipolar Transistor Q5536
are directly attached to the heat sink.
Power Controlled Stage
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9.1
The Þrst stage (Q5510) ampliÞes the RF signal from the VCO (line EXCITER PA) and controls the
output power of the PA. The output power of the transistor Q5510 is proportional to its collector
current which is adjusted by a voltage controlled current source consisting of Q5612 and Q5621.
The whole stage operates off the K9V1 source which is 9.1V in transmit mode and nearly 0V in
receive mode.
The collector current of Q5510 causes a voltage drop across the resistors R5623 and R5624.
Transistor Q5612 adjusts the voltage drop across R5621 through PA control line (PWR CNTL). The
current source Q5621 adjusts the collector current of Q5510 by modifying its base voltage until the
voltage drop across R5623 and R5624 plus VBE (0.6V) equals the voltage drop across R5621 plus
VBE (0.6V) of Q5611. If the voltage of PWR CNTL is raised, the base voltage of Q5612 will also rise
causing more current to ßow to the collector of Q5612 and a higher voltage drop across R5621. This
in turn results in more current driven into the base of Q5510 by Q5621 so that the current of Q5510
is increased. The collector current settles when the voltage over the series conÞguration of R5623
and R5624 plus VBE of Q5621 equals the voltage over R5621 plus VBE (0.6V) of Q5611.
4-18
Theory of Operation
By controlling the output power of Q5510 and in turn the input power of the following stages the ALC
loop is able to regulate the output power of the transmitter.
9.2
PA Stages
The bipolar transistor Q5520 is driven by Q5510. To reduce the collector - emitter voltage and in turn
the power dissipation of Q5510 its collector current is drawn from the antenna switch circuit.
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In transmit mode the base of Q5520 is slightly positive biased by a divided K9V1 signal to allow a
collector current to be drawn from the antenna switch circuit and in turn switches the antenna switch
to transmit while in receive mode the low K9V1 signal cuts off the collector current and in turn
switches the antenna switch to receive.
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8.
The following stage uses an enhancement mode N-Channel MOS FET device (Q5530) and requires
a positive gate bias and a quiescent current ßow for proper operation. The voltage of the line BIAS
VLTG is set in transmit mode by a Digital to Analog (D/A) converter (U0731-4) and fed to the gate of
Q5530 via a resistive divider. The bias voltage is tuned in the factory. If the transistor is replaced, the
bias voltage must be tuned with the Radio Service Software (RSS). Care must be taken, not to
damage the device by exceeding the maximum allowed bias voltage. The collector current is drawn
from the supply voltage A+.
9.3
Directional Coupler
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The Þnal stage uses the bipolar device Q5536 and operates off the A+ supply voltage. For class C
operation the base is DC grounded by two series inductors (L5533, L5534). A matching network
consisting of C5542-C5544 and two striplines transform the impedance to 50 Ohms and feed the
directional coupler.
9.4
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The directional coupler is a microstrip printed circuit which couples a small amount of the forward
power off the RF power from Q5536. The coupled signal is rectiÞed to an output power proportional
negative DC voltage by the diode D5553 and sent to the power control circuit in the controller
section via the line PWR DETECT for output power control. The power control circuit holds this
voltage constant, thus ensuring the forward power out of the radio to be held to a constant value.
Antenna Switch
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The antenna switch is switched synchronously with the K9V1 voltage and feeds either the antenna
signal coming through the harmonic Þlter to the receiver or the transmitter signal coming from the PA
to the antenna via the harmonic Þlter.
In transmit mode, this K9V1 voltage is high and biases Q5520 to allow a collector current to be
drawn. The collector current of Q5520 drawn from A+ ßows via L5542,L5541, directional coupler,
D5551, L5551, D5631, L5631, R5616, R5617 and L5611 and switches the PIN diodes D5551 and
D5631 to the low impedance state. D5551 leads the RF signal from the directional coupler to the
harmonic Þlter. The low impedance of D5631 is transformed to a high impedance at the input of the
harmonic Þlter by the resonant circuit formed by L5551,C5633 and the input capacitance of the
harmonic Þlter.
In receive mode the low K9V1 turns off the current through the PIN diodes and switches them to the
high impedance state. The antenna signal, coming through the harmonic Þlter, is channelled to the
receiver via L5551, C5634 and line PA RX.
Theory of Operation
4-19
A high impedance resonant circuit formed by D5551 in off state and L5554, C5559 prevents an
inßuence of the receive signal by the PA stages. The high impedance of D5631 in off state doesn«t
inßuence the receiver signal.
9.5
Harmonic Filter
Power Control
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The transmitter signal from the antenna switch is channelled through the harmonic Þlter to the
antenna connector J5501.The harmonic Þlter is formed by inductors L5552, L5553, and capacitors
C5557,C5552 through C5555. This network forms a low-pass Þlter to attenuate harmonic energy of
the transmitter to speciÞcations level. R5550 is used for electro - static protection.
8.
The power control loop regulates transmitter power with an automatic level control (ALC) loop and
provides protection features against excessive control voltage and high operating temperatures.
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MOS FET device bias, power and control voltage limit are adjusted under microprocessor control
using a Digital to Analog (D/A) converter (U0731). The microprocessor writes the data into the D/A
converter via serial interface (SRL) composed of the lines SPI CLCK SRC (clock), SPI DATA SRC
(data) and DAC CE (chip enable). The D/A adjustable control voltage limit increases transmitter rise
time and reduces adjacent channel splatter as it is adjusted closer to the actual operating control
voltage.
The microprocessor controls K9V1 ENABLE (U0101-6) to switch on the Þrst and the second PA
stage via K9V1. The antenna switch is turned on by the collector current of the second PA stage. PA
DISABLE, also microprocessor controlled (U0101-54), sets BIAS VLTG (U0731-4) and VLTG LIMIT
SET (U0731-13) in receive mode to low to switch off the bias of the MOS FET device Q5530 and to
switch off the power control voltage (PWR CNTL).
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Through an Analog to Digital (A/D) input (VLTG LIMIT) the microprocessor can read the PA control
voltage (PWR CNTL) during the tuning process.
The ALC loop regulates power by adjusting the PA control line PWR CNTL to keep the forward
power voltage PWR DETECT at a constant level.
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Opamp U0701-2 and resistors R0701 to R0703 and R0731 subtract the negative PWR DETECT
voltage from the PWR SET D/A output U0731 pin 2. The result is connected to opamp inverting
input U0701-4 pin 9. This voltage which is compared with a 4.6 volt reference VAG present at
noninverting input U0701-4 pin 10 and controls the output power of the PA via pin 8 and control line
PWR CNTL. The 4.6 volt reference VAG is set by a resistive divider circuit (R0171, R0172) which is
connected to ground and 9.3 volts and buffered by opamp U0105-1.
During normal transmitter operation the voltages at the opamp inputs U0701-4 pins 9 and 10 should
be equal to 4.6 volts and the PA control voltage output at pin 8 should be between 4 and 7 volts. If
power falls below the desired setting, PWR DETECT increases, causing the output at U0701-2 pin 7
to decrease and the opamp output U0701-4 pin 8 to increase.
A comparator formed by U0701-4 increases the PA control voltage PA CNTL until PWR DETECT is
at the desired level. The power set D/A output voltage PWR SET (U0731-2) at U0701-2 pin 5 adjusts
power in steps by adjusting the required value of PWR DETECT. As PWR SET (U0731-2)
decreases, transmitter power must increase to make PWR DETECT larger and keep the inverting
input U0701-4 pin 9 at 4.6 volts.
4-20
Theory of Operation
Frequency Synthesis
Loop frequency response is controlled by opamp feedback components R0712 and C0711. Opamp
U0701-3 compares the power control voltage PWR CNTL divided by resistors R0717 to R0719 with
the voltage limit setting VLTG LIMIT SET from the D/A converter (U0731-13) and keeps the control
voltage constant via Q0711 if the control voltage, reduced by the resistive divider (R0717 to R0719),
approaches the voltage of VLTG LIMIT SET (U0731-13).
Rise and fall time of the output power during transmitter keying and dekeying is controlled by the
comparator formed by opamp U0701-3.
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During normal transmitter operation the voltage at U701-3 pin 13 is higher than the voltage at pin 12
causing the output at pin 14 being low and switching off transistor Q0711. Diode D0732 reduces the
bias voltage BIAS VLTG for low control voltage levels.
10.0
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The temperature of the PA area is monitored by opamp U0701-1 using thermistor R5641 (located in
the PA section). If the temperature increases, the resistance of R5641 decreases, decreasing the
voltage PA TEMP. The inverting ampliÞer formed by U0701-1 ampliÞes the PA TEMP voltage and if
the voltage at opamp pin 1 approaches 4.6 V plus the voltage (ON) across D0721, U701-1 simulates
an increased power which in turn decreases the power control voltage until the voltage at U0701-4
pin 9 is 4.6V again. During normal transmitter operation the output voltage of opamp U701-1 pin 1 is
below 4.6V. Diode D5601 located in the PA section acts as protection against transients and wrong
polarity of the supply voltage.
Frequency Synthesis
The complete synthesizer subsystem consists of the Reference Oscillator (U7502), the Fractional-N
synthesizer (U7501), the Voltage Controlled Oscillator (Q5741, Q5751), the RX and TX buffer stages
(Q5771, Q5781) and the feedback ampliÞer (Q5791).
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The Reference Oscillator (Y5702) contains a temperature compensated crystal oscillator with a
frequency of 16.8 MHz. An analog to digital (A/D) converter internal to U5701 (FRAC-N) and
controlled by the microprocessor via serial interface (SRL) sets the voltage at the warp output of
U5701 pin 16 to set the frequency of the oscillator. The output of the oscillator (pin 2 of Y5702) is
applied to pin 14 (XTAL1) of U5701 via a RC series combination.
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In applications were less frequency stability is required the oscillator inside U5701 is used along with
an external crystal Y5701, the varactor diode D5702, C5708, C5710 and R5704.
10.2
Fractional-N Synthesizer (U7501)
The FRAC-N synthesizer IC (U7501) consists of a pre-scaler, a programmable loop divider, control
divider logic, a phase detector, a charge pump, an A/D converter for low frequency digital
modulation, a balance attenuator to balance the high frequency analog modulation and low
frequency digital modulation, a 13V positive voltage multiplier, a serial interface for control, and
Þnally a super Þlter for the regulated 9.3 volts.
A voltage of 9.3V applied to the super Þlter input (U7501 pin 22) supplies an output voltage of 8.6
VDC at pin 18. It supplies the VCO (Q5741), VCO modulation bias circuit (via R5714) and the
synthesizer charge pump resistor network (R5723, R5724, R5726). The synthesizer supply voltage
is provided by the 5V regulator U5801.
Theory of Operation
4-21
Frequency Synthesis
In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin
VCP (U5701-32), a voltage of 13 VDC is being generated by the positive voltage multiplier circuitry
(D5701-1-3, C5716, C5717). This voltage multiplier is basically a diode capacitor network driven by
two (1.05MHz) 180 degrees out of phase signals (U5701-9 and -10).
Output LOCK (U5701-2) provides information about the lock status of the synthesizer loop. A high
level at this output indicates a stable loop. IC U5701 divides the 16.8 MHz reference frequency down
to 2.1 MHz and provides it at pin 11. This signal is used as clock signal by the controller.
Voltage Controlled Oscillator (VCO)
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The serial interface (SRL) is connected to the microprocessor via the data line SPI DATA (U5701-5),
clock line SPI CLK (U5701-6), and chip enable line FRACN CE (U5701-7).
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8.
The Voltage Controlled Oscillator (VCO) is formed by the colpitts oscillator FET Q5741. Q5741
draws a drain current of 12 mA from the FRAC-N IC super Þlter output. The oscillator frequency is
half of the desired frequency and mainly determined by L5743, C5742, C5743, C5745 - C5748 and
varactor diodes D5741 / D5742. Diode D5743 controls the amplitude of the oscillator.
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A balanced frequency doubler T5751, D5751 converts the oscillator fundamental to the desired UHF
frequency. With a steering voltage from 2.5V to 10.5V at the varactor diodes the full RX and TX
frequency range from 357.9 MHz to 470 MHz is covered.
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After the doubler a 3-pole bandpass Þlter rejects unwanted harmonics at the Þrst and third oscillator
fundamental frequency and matches the output to the Common VCO Buffer Q5751. Q5751 draws a
collector current of 13 mA from the stabilized 5V (U5801) and drives the Pre-scaler Buffer Q5791,
the PA Buffer Q5781 (Pout = 13dBm) and Mixer Buffer Q5771 (Pout = 10dBm). Q5791 draws a
collector current of 8 mA from the stabilized 5V and Q5771, Q5781 both draw 17mA form the 9V3
source. The buffer stages Q5771, Q5781 and the feedback ampliÞer Q5791 provide the necessary
gain and isolation for the synthesizer loop.
Synthesizer Operation
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10.4
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Q5731 is controlled by output AUX3 of U7501 (pin 1) and enables the RX or TX buffer. In RX mode
AUX3 is nearly at ground level, in TX mode about 5V DC. In TX mode with R5732 pulled to ground
level by Q5731 the modulation signal coming from the FRAC-N synthesizer IC (U7501 pin28)
modulates the VCO via varactor diode D5731 while in RX mode the modulation circuit is disabled by
pulling R5732 to a higher level through R5772.
The complete synthesizer subsystem works as follows. The output signal of the VCO (Q5741) is
frequency doubled by doubler D5751 and, buffered by Common VCO Buffer Q5751. To close the
synthesizer loop, the collector of Q5791 is connected to the PREIN port of synthesizer U5701 (pin
20). The buffer output (Q5751) also provides signals for the Mixer Buffer Q5771 and the PA Buffer
(Q5781).
The pre-scaler in the synthesizer (U5701) is basically a dual modulus pre-scaler with selectable
divider ratios. This divider ratio of the pre-scaler is controlled by the loop divider, which in turn
receives its inputs via the SRL. The output of the pre-scaler is applied to the loop divider. The output
of the loop divider is connected to the phase detector, which compares the loop divider«s output
signal with the reference signal.The reference signal is generated by dividing down the signal of the
reference oscillator (Y5702).
4-22
Theory of Operation
Frequency Synthesis
The output signal of the phase detector is a pulsed DC signal which is routed to the charge pump.
The charge pump outputs a current at pin 29 (I OUT of U5701). The loop Þlter (which consists of
R5715-R5717, C5723-C5725, C5727) transforms this current into a voltage that is applied to the
varactor diodes D5741, D5742 and alters the output frequency of the VCO. The current can be set to
a value Þxed in the FRAC-N IC or to a value determined by the currents ßowing into CPBIAS 1
(U5701-27) or CPBIAS 2 (U5701-26). The currents are set by the value of R5724 or R5726
respectively. The selection of the three different bias sources is done by software programming.
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To reduce synthesizer lock time when new frequency data has been loaded into the synthesizer the
magnitude of the loop current is increased by enabling the IADAPT line (U5701-31) for a certain
software programmable time (Adapt Mode). The adapt mode timer is started by a low to high
transient of the FRACN CE line. When the synthesizer is within the lock range the current is
determined only by the resistors connected to CPBIAS 1, CPBIAS 2, or the internal current source.
8.
A settled synthesizer loop is indicated by a high level of signal LOCK DET (U5701-2). This signal is
routed to uP U0101-17 for further processing.
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In order to modulate the PLL the two spot modulation method is utilized. Via pin 8 (MODIN) on
U5701 the audio signal is applied to both the A/D converter (low freq path) as well as the balance
attenuator (high freq path). The A/D converter converts the low frequency analog modulating signal
into a digital code that is applied to the loop divider, thereby causing the carrier to deviate. The
balance attenuator is used to adjust the VCOÕs deviation sensitivity to high frequency modulating
signals. The output of the balance attenuator is present at the MODOUT port (U5701-28) and
connected to the VCO modulation diode D5731.
Theory of Operation
4-23
Receiver Front-End
VHF SPECIFIC CIRCUIT DESCRIPTION
11.0
Receiver Front-End
The receiver is able to cover the VHF range from 136 to 174 MHz. It consists of four major blocks:
front-end, mixer, Þrst IF section and IF IC. Antenna signal pre-selection is performed by two varactor
tuned bandpass Þlters. A double balanced schottky diode mixer converts the signal to the Þrst IF at
45.1 MHz.
Front-End Band-Pass Filter and Pre-AmpliÞer
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11.1
8.
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Two crystal Þlters in the Þrst IF section and two ceramic Þlters in the second IF section provide the
required selectivity. The second IF at 455 kHz is mixed, ampliÞed and demodulated in the IF IC. The
controller section.
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A two pole pre-selector Þlter tuned by the dual varactor diode D3301 pre-selects the incoming signal
(PA RX) from the antenna switch to reduce spurious effects to following stages. The tuning voltage
(FE CNTL VLTG) ranging from 2 volts to 8 volts is controlled by a Digital to Analog (D/A) converter
(U0731-11) in the controller section. A dual hot carrier diode (D3303) limits any inband signal to
0dBm to prevent damage to the pre-ampliÞer.
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The RF pre-ampliÞer is an SMD device (Q3301) with collector base feedback to stabilize gain,
impedance, and intermodulation. The collector current of approximately 11-16 mA, drawn from the
voltage 9V3, is controlled by a current source composed of Q3302, R3302, R3300, and R3311 R3313. In transmit mode the high K9V1 signal fed through diode D3300 switches off the current
source and in turn the pre-ampliÞer. In receive mode K9V1 must be low to switch on the current
source. A 3 dB pad (R3306 - R3308 and R3316 - R3318) stabilizes the output impedance and
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A second two pole varactor tuned bandpass Þlter provides additional Þltering to the ampliÞed signal.
The dual varactor diode D3304 is controlled by the same signal which controls the pre-selector Þlter.
11.2
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If the VHF radio is conÞgured for a base station application, R3318 is not placed and TP3301 and
TP3302 are shorted.
The signal coming from the front-end is converted to the Þrst IF (45.1 MHz) using a double balanced
schottky diode mixer (D3331). Its ports are matched for incoming VHF signal conversion to the
45.1MHz IF using high side injection. The injection signal (VCO MIXER) coming from the mixer
buffer (Q3770) is Þltered by the lowpass consisting of (L3333, L3334, C3331 - C3333) and has a
level of approximately 10 dBm.
The mixer IF output signal (RX IF) from transformer T3301 pin 2 is fed to the Þrst two pole crystal
Þlter Y5201. The Þlter output in turn is matched to the following IF ampliÞer.
The IF ampliÞer Q5201 is actively biased by a collector base feedback (R5201, R5202) to a current
drain of approximately 5 mA drawn from the voltage 5V STAB. The output impedance is matched to
the second two pole crystal Þlter Y5202. A dual hot carrier diode (D5201) limits the Þlter output
4-24
Theory of Operation
Power AmpliÞer (PA) 5-25W
11.3
IF IC (U5201)
The Þrst IF signal from the crystal Þlters feeds the IF IC (U5201) at pin 6. Within the IF IC the
45.1MHz Þrst IF signal mixes with the second local oscillator (LO) at 44.645MHz to the second IF at
455 kHz. The second LO uses the external crystal Y5211. The second IF signal is ampliÞed and
Þltered by two external ceramic Þlters (FL5201, FL5202). Back in the IF IC the signal is demodulated
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The radioÕs 5-25 W PA is a three stage ampliÞer used to amplify the output from the exciter to the
radio transmit level. It consists of three stages in the line-up. The Þrst (Q3511) is a bipolar stage that
is controlled via the PA control line. It is followed a MOS FET stage (Q3521) and a Þnal bipolar stage
(Q3531).
Devices Q3511 and Q3521 are surface mounted. Bipolar Transistor Q3531 is directly attached to the
heat sink.
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12.1
The Þrst stage (Q3511) ampliÞes the RF signal from the VCO (line EXCITER PA) and controls the
The current of the whole stage is drawn from the RX-TX Switch through coil L3652.
voltage drop across R3645 and R3646 plus VBE (0.6V) equals the voltage drop across R3644. If the
voltage of PWR CNTL is raised, the base voltage of Q3641 will also rise causing more current to
ßow to the collector of Q3641 and a higher voltage drop across R3644. This in turn results in more
current driven into the base of Q3511 by Q3642 so that the current of Q3511 is increased. The
collector current settles when the voltage over the series conÞguration of R3645 and R3646 plus
VBE of Q3642 equals the voltage over R3644. By controlling the output power of Q3511 and in turn
the input power of the following stages the ALC loop is able to regulate the output power of the
transmitter.
Theory of Operation
4-25
In receive mode the PA control line (PWR CNTL) is at ground level and switches off the collector
current of Q3641 which in turn switches off the current source transistor Q3642 and the RF
transistor Q3511.
12.2
PA Stages
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The following stage uses an enhancement mode N-Channel MOS FET device (Q3521) and requires
a positive gate bias and a quiescent current ßow for proper operation. The voltage of the line BIAS
VLTG is set in transmit mode by a Digital to Analog (D/A) converter (U0731-4) and fed to the gate of
Q53521 via the resistive network R3613 - R3615. The bias voltage is tuned in the factory. If the
transistor is replaced, the bias voltage must be tuned with the Radio Service Software (RSS). Care
must be taken, not to damage the device by exceeding the maximum allowed bias voltage. The
collector current is drawn from the supply voltage 9V3 SUPP.
Directional Coupler
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12.3
16
8.
The Þnal stage uses the bipolar device Q3531 and operates off the A+ supply voltage. For class C
consisting of C3530-C3534, L3532, L3533 and two striplines transform the impedance to 50 Ohms
and feed the directional coupler.
Antenna Switch
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power off the RF power from Q3531. The coupled signal is rectiÞed to an output power proportional
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The antenna switch is switched synchronously with the PWR CNTL signal and feeds either the
antenna signal coming through the harmonic Þlter to the receiver or the transmitter signal coming
from the PA to the antenna via the harmonic Þlter.
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In transmit mode, this PWR CNTL signal is above 1 V and biases Q3511 through Q3641 and Q3642
to allow a collector current to be drawn. The collector current of Q3511 drawn from A+ ßows via
L3631, L3531, L3532, L3533, directional coupler, D3551, L3651, D3651, L3652, Resistors R3645,
R3646, R3648 and switches the PIN diodes D3551 and D3651 to the low impedance state. D3551
leads the RF signal from the directional coupler to the harmonic Þlter. The low impedance of D3651
is transformed to a high impedance at the input of the harmonic Þlter by the resonant circuit formed
by L3651,C3652 and the input capacitance of the harmonic Þlter.
In receive mode the PWR CNTL signal at ground level turns off the current through the PIN diodes
and switches them to the high impedance state. The antenna signal, coming through the harmonic
Þlter, is channelled to the receiver via L3651, C3651 and line PA RX. The high impedance of D3651
in off state does not inßuence the receiver signal.
4-26
Theory of Operation
12.5
Harmonic Filter
The transmitter signal from the antenna switch is channelled through the harmonic Þlter to the
antenna connector J3501.The harmonic Þlter is formed by inductors L3551, L3552, and capacitors
C3551 - C3554 This network forms a low-pass Þlter to attenuate harmonic energy of the transmitter
to speciÞcations level. R3551 is used for electro - static protection.
12.6
Power Control
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The microprocessor controls K9V1 ENABLE (U0101-6) to switch on the Þrst and the second PA
stage via K9V1. The antenna switch is turned on by the collector current of the Þrst PA stage. PA
DISABLE, also microprocessor controlled (U0101-54), sets BIAS VLTG (U0731-4) and VLTG LIMIT
SET (U0731-13) in receive mode to low to switch off the bias of the MOS FET device Q3521 and to
switch off the power control voltage (PWR CNTL).
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Opamp U0701-2 and resistors R0701 to R0703 and R0731 subtract the negative PWR DETECT
voltage from the PWR SET D/A output U0731 pin 2. The result is connected to opamp inverting
input U0701-4 pin 9. This voltage which is compared with a 4.6 volt reference VAG present at
noninverting input U0701-4 pin 10 and controls the output power of the PA via pin 8 and control line
PWR CNTL. The 4.6 volt reference VAG is set by a resistive divider circuit (R0171, R0172) which is
connected to ground and 9.3 volts and buffered by opamp U0105-1.
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During normal transmitter operation the voltages at the opamp inputs U0701-4 pins 9 and 10 should
be equal to 4.6 volts and the PA control voltage output at pin 8 should be between 4 and 7 volts. If
power falls below the desired setting, PWR DETECT increases, causing the output at U0701-2 pin 7
to decrease and the opamp output U0701-4 pin 8 to increase.
at the desired level. The power set D/A output voltage PWR SET (U0731-2) at U0701-2 pin 5 adjusts
power in steps by adjusting the required value of PWR DETECT. As PWR SET (U0731-2)
decreases, transmitter power must increase to make PWR DETECT larger and keep the inverting
input U0701-4 pin 9 at 4.6 volts.
Loop frequency response is controlled by opamp feedback components R0712 and C0711. Opamp
U0701-3 compares the power control voltage PWR CNTL divided by resistors R0717 to R0719 with
the voltage limit setting VLTG LIMIT SET from the D/A converter (U0731-13) and keeps the control
voltage constant via Q0711 if the control voltage, reduced by the resistive divider (R0717 to R0719),
approaches the voltage of VLTG LIMIT SET (U0731-13).
Theory of Operation
4-27
Frequency Synthesis
comparator formed by opamp U0701-3.
bias voltage BIAS VLTG for low control voltage levels.
Frequency Synthesis
16
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The temperature of the PA area is monitored by opamp U0701-1 using thermistor R3611 (located in
the PA section). If the temperature increases, the resistance of R3611 decreases, decreasing the
voltage PA TEMP. The inverting ampliÞer formed by U0701-1 ampliÞes the PA TEMP voltage and if
the voltage at opamp pin 1 approaches 4.6 V plus the voltage (ON) across D0721, U701-1 simulates
an increased power which in turn decreases the power control voltage until the voltage at U0701-4
pin 9 is 4.6V again. During normal transmitter operation the output voltage of opamp U701-1 pin 1 is
below 4.6V. Diode D3601 located in the PA section acts as protection against transients and wrong
polarity of the supply voltage.
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The complete synthesizer subsystem consists of the Reference Oscillator (Y3702 or Y3701), the
Fractional-N synthesizer (U3701), the Voltage Controlled Oscillator (Q3741, Q3751), the RX and TX
buffer stages (Q3760, Q3770, Q3780) and the feedback ampliÞer (Q3790).
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frequency of 16.8 MHz. An analog to digital (A/D) converter internal to U3701 and controlled by the
microprocessor via serial interface (SRL) sets the voltage at the warp output of U3701 pin 16 to set
the frequency of the oscillator. The output of the oscillator (pin 2 of Y3702) is applied to pin 14
(XTAL1) of U3701 via a RC series combination.
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Þnally a super Þlter for the regulated 9.3 volts.
A voltage of 9.3V applied to the super Þlter input (U3701 pin 22) supplies an output voltage of 8.6
VDC at pin 18. It supplies the VCO (Q3741 / Q3751), VCO modulation bias circuit (R3714) and the
synthesizer charge pump resistor network (R3723, R3724). The synthesizer supply voltage is
provided by the 5V regulator U3801.
two (1.05 MHz) 180 degrees out of phase signals (U3701-9 and -10).
4-28
Theory of Operation
Frequency Synthesis
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The Voltage Controlled Oscillator (VCO) uses 2 colpitts oscillators, FET Q3741 for transmit and FET
Q3751 for receive. The appropriate oscillator is switched on or off by FRAC-N IC output AUX3
(U3701-1) using transistors Q3742 and Q3752. In RX mode AUX3 is nearly at ground level and
Q3742 enables a current ßow from the source of FET Q3751 while Q3752 is switched off. In TX
mode AUX3 is about 5V DC and Q3742 is switched off. Q3752 is switched on and enables a current
ßow from the source of FET Q3741 while Q3751 is switched off. When switched on the FETs draw a
drain current of 8 mA from the FRAC-N IC super Þlter output. The frequency of the receive oscillator
is mainly determined by L3752, C3752, C3754 - C3756 and varactor diodes D3751 / D3752. Diode
D3754 controls the amplitude of the oscillator. The frequency of the transmit oscillator is mainly
determined by L3734, C3736 - C3740 and varactor diodes D3732 / D3733. Diode D3739 controls
the amplitude of the oscillator. With a steering voltage from 3V to 10V at the varactor diodes the RX
frequency range from 181.1 MHz to 219.1 MHz and the TX frequency range from 136 MHz to 174
MHz are covered. In TX mode the modulation signal coming from the FRAC-N synthesizer IC
(U3701 pin 28) modulates the TX VCO via varactor diode D3731.
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Both oscillator outputs are combined and buffered by the VCO Buffer Q3760. Q3760 draws a
collector current of 13 mA from the stabilized 5V (U3801) and drives the Mixer Buffer Q3770. Q3770
draws a collector current of 17 mA from the 9V3 voltage and drives the PA Buffer Q3780 (Pout =
13dBm) and the Pre-scaler Buffer Q3790. Q3790 draws a collector current of 8 mA from the
stabilized 5V (U3801) and drives the pre-scaler internal to the FRAC-N IC. In transmit mode Q3780
is switched on by the K9V1 signal and draws a collector current of 19 mA from the K9V1 voltage.
The injection signal VCO MIXER with a level of 10dBm feeds the mixer through R3774. The buffer
stages Q3760, Q3770, Q3780 and the feedback ampliÞer Q3790 provide the necessary gain and
isolation for the synthesizer loop.
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The complete synthesizer subsystem works as follows. The combined output signal of the RX VCO
(Q3751) and TX VCO (Q3741) is buffered by VCO Buffer Q3760, Mixer Buffer Q3770 and Pre-scaler
Buffer Q3790. To close the synthesizer loop, the collector of Q3790 is connected to the PREIN port
of synthesizer U3701 (pin 20). The output of (Q3770) also provides signals for the mixer (via VCO
MIXER) and the PA Buffer (Q3780).
of the loop divider is connected to the phase detector, which compares the loop divider«s output
Theory of Operation
4-29
Frequency Synthesis
The charge pump outputs a current at pin 29 (I OUT of U3701). The loop Þlter (which consists of
R3715 - R3717, C3723 - C3725, C3727) transforms this current into a voltage that is applied to the
varactor diodes D3732, D3733 (TX), D3751, D3752 (RX) and alters the output frequency of the TX
VCO (Q3741) and RX VCO (Q3751). The current can be set to a value Þxed in the FRAC-N IC or to
a value determined by the current ßowing into CPBIAS 1 (U3701-27). The current is set by the value
of R3723 and R3724. The selection of the two different bias sources is done by software
programming.
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determined only by the resistors connected to CPBIAS 1 or the internal current source.
8.
routed to µP U0101-17 for further processing.
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into a digital code that is applied to the loop divider, thereby causing the carrier to deviate. The
balance attenuator is used to adjust the VCOÕs deviation sensitivity to high frequency modulating
signals. The output of the balance attenuator is present at the MODOUT port (U3701-28) and
connected to the VCO modulation diode D3731.
4-30
Theory of Operation
Table of Contents
Chapter 5
Diagrams and Parts Lists
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Description
8.
UHF Diagrams and Parts Lists
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Main Board - UHF PCB Layout Component Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Main Board - UHF PCB Layout Solder Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Main Board - UHF GM950i, Controller Schematic Diagram 1 of 2 . . . . . . . . . . . . . . . . . 5
Main Board - UHF GM950i, Controller Schematic Diagram 2 of 2 . . . . . . . . . . . . . . . . . 7
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Main Board - UHF GM950E, Controller Schematic Diagram 1 of 2. . . . . . . . . . . . . . . . 13
Main Board - UHF GM950E, Controller Schematic Diagram 2 of 2. . . . . . . . . . . . . . . . 15
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Main Board - UHF Supply Voltage Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . 21
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Main Board - UHF Power Control Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 25
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Main Board - UHF Power AmpliÞer 5-25W Schematic Diagram . . . . . . . . . . . . . . . . . . 29
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Main Board - UHF Synthesizer Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Main Board - UHF Voltage Controlled Oscillator Schematic Diagram . . . . . . . . . . . . . . 37
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Main Board - UHF RX-FE Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Main Board - UHF RX-IF Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5-i
Table of Contents
Description
Page
VHF Diagrams and Parts Lists
49
51
53
55
57
61
63
65
69
71
Main Board - VHF Power Control Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF Power AmpliÞer 5-25W Schematic Diagram . . . . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF Synthesizer Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF Voltage Controlled Oscillator Schematic Diagram . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF RX-FE Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF RX-IF Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
73
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77
79
81
83
85
87
89
91
93
95
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Main Board - VHF PCB Layout Component Side . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF PCB Layout Solder Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF GM950i, Controller Schematic Diagram 1 of 2 . . . . . . . . . . . . . . . .
Main Board - VHF GM950i, Controller Schematic Diagram 2 of 2 . . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF GM950E, Controller Schematic Diagram 1 of 2 . . . . . . . . . . . . . . .
Main Board - VHF GM950E, Controller Schematic Diagram 2 of 2 . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Board - VHF Supply Voltage Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . .
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Control Head Diagrams and Parts Lists
Control Head - Model K, PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Control Head - Model K, Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Control Head - Model P, PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Control Head - Model P, Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
5-ii
UHF Main Board Component Side
C0103
Y0114
C0117
C0116
J0101
C0105
Q0114
C0114
R0125
C0125 R0127 C0127
R0104
C0126
C5707
R5705
C5702 R5702
C5314
C5313
R5316
L5754 C5762
R5310
C5318
C5312
C5311
C5309
R5305
D5303
R5314
C5633 C5634
C5544
L5542
L5541
C5548
L5611
C5547
C5530
R0431
VR0420
15
R0454
C0405
VR0431
C0464
R0446
VR0464 C0422
R0422 C0412 C0446 C0431
R0432
C0406
1
C5600
L5552
C5534
C5536
R5525
C5557
R5527
C5522
R5526
C5533
C5552
C5535
R5550
C5555
C5554
C5543
C5537
J5601
C5541
L5553
C5553
C5520
C5521
R5641
2
R0425
VR0422
VR0411
C0445
C0455
Q0431
e
t
VR0454
Q0421
R0423
C5632
L5631
C5551
3
R0427
R0426
VR0445
D5631
L5551
C5559
Q5520
L5600
D5302 C5326 D5301
R5304 C5327
Q5301
C5303
C5302
R5303
C5308
C5301
R5313
R5306
C5325
R5614
R5511
E5301
C5323
Shield 2605915V01
T5401
C5761
R5307
C5300
C5304
C5305
C5306
4
U0401
L5402
C5404
R5308
C5310 R5301
C5617
1
6
8
.
n
R5513
C5511
C5513
R5512
C5512
R5401
C5754
C5616
Q5510
R5302
C5320
R5309
D5305 C5329
C5319
C5307
D5551
C5501
C5623
C5622
L5401
L5554
L5503
D5401
L5302
L5501
C5613
d
i
o
R5624
C0402
C5402
L5403
C5401
D5304
C5503
Y5211
C5328
R5501
R5502
R5623
Q5621
C0401
C0419 C0420 C0407
C5611
L5211 R5211
Y5202
L5201
C5324
C5321
C5315
C5316
C5317
R0406
C5502
R0401
R0402
R5782
R5783
C5753 R5756
Q0401
L0401 L0402 C0403
R0407
Q5751
C5781C5763
R5781
C0713
R0715 R0733
R0151
R0404 R0405
Q5781
R5754
U0601
D0732
R5784
Y5201
C5211
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R5790
C5751
FL5201
C5212
T5402
C5759
w
C5786
L5404
D5751
R5755
2
R5212 C5213
C5403
C5760
R5785
C5782
R5786
C0732
R0731
C5784
R5787
C5783
L5781
R0732
R5788
1
R5789
.m
y
r
a
R0152
3
C0701
Q0742 C0721
R0153
R5753 C5756
R5752
R5751
C0133
C0151
C5787
5
Q5741
R5743
C5749
U0731
C0185
R0621
R0721
C0742
R0136
D5731
C5743
C5744
D5741
C5742
C5734 R5733 C5732
C5745
C5746
Q5731 C5752
C5747
R5744
C5750 C5748 T5751
L5744
VR0621
Q0741
R0741
R0742
C0731
R0601
D5743
Q0601
D0731
D0621
C0142
R0135
R0156
R0189
R5742
C0632
C0621
Q0731
C0141
U0106
U0631
R0604
R0719
R0142
R0146
R0145
R0141
R0144
L5731
6
C5214
h
t
t
C0633
R0605
C0641
R0188
R0143
R5732
p
:
C0635
R0616
C0191
C0172
L5741
// w
U0108
C0634
C5731
C5733
C0132
U0105
Shield 2605782V03
L5743
R0183 C0131
R0186
C0182
R5801
C5704
C5741
C0622
U0107
R0185
C0184 R0184
R0191
C5235
C5803
R5708
L5742
R0121 R0124
R0122 C0122
R0123 C0121
R0120
C0171
5
C5802
C5706
D5742
R0187
4
R5221
D5702
C5709
R5701 C5713
C5703
C0101
R0101
C5226
U5801
C5701
C5727
U0104
R0130
C5801
C5724
E5732
R0172
C0156
Y5702
U0102
R0131
C0181
R0171
C0404
R5726
C5727
C0161
R0161
R0165
C0155
R0155
R0154
C0154
R5723
C5728
C0194
D0101
R0134 C0134
R0128
R0192
R0162
R0164
C0164
R0126
R0119
C0102
U0101
R0113
R0110
R0106
R0107
R0109
R0108
R0167
C0163 C0162
R0163
R0166
R5724
FL5202
Q0138
Q0161
C0110
C5726
R0103
R0114
C0118 R0116
E5702
R5703
Q0137
C0137
R0102
Shield 2605915V01
C0115
R0138
R0137
R0105
C0104
R0115
L0114
C5542
J5501
2
16
J0400
UHF Main Board Component Side
PCB No. 8485668Z01
5-1
C5720
R0147
R5794 R5795
C0631
Q5791
R5792
C5791
R5791
L5771
R5793
Q5771R5773
C5771
R5771
R5779
R5772
R5775
R0611
R0632
R0631
R0603
R0606
C0602 C0601
R5553
C5558
R5552
R5551
C5556
1
6
8
.
n
C5631
TP5204
R0723
C0722
C0723
U0701
C0741
R0701
C0711
C0712
Q0711
R0714
R0717
R0735
C0714
R0712
C0733
R0716
C0716
TP5202
C5618
R5616
C5531
C5614
R0718
R0435 R0439
J0102
R0438
C0438
C5615 R5613
C5619
D0471
R5622
TP5201
R5621
R0471
C0471
Q5611
R5615
e
t
C5523 R5523
C5604
C5601
R0461 Q0433
R0436
Q0461
R0462
Q0462 R0465
R0413
R0463
C0413
Q0412
R0474
C0462
R0477
R0475
R0412 R0414 R0415
R0464
C0414
R0442
C0463
Q0411
Q0441
R0411
Q0471
C0441
C5603
C5602
L5601
Q0432
C0461
Q0442
C5532
C0435
R0437
R0476
R0472
R0473
L5532
R5617
L5534
C0439
R0713
R0100
R5611
TP5203
L5533
D0721
R0711
R5612 C5612 C5621
R5541
Q5540
R0724
C0702
C0604
C0603
R0722
C0703 R0725
C0605 VR0641 R0702
R0734
d
i
o
D5553
C0613
R0703
C5772
R5319
Q0612
R0642 R0641
R0602
TP5788
R5312
R5778
C5775
C5773
TP5777
TP5302
TP5301
C5331
C5322
R5774
.m
y
r
a
R5317
R5311
R5318
R5776
C5792
w
Q5302
R5777
D0631
w
C5785 C5774
R5315
C0170
D0611
R0704
C5793
L0170
Q5612
E5731
R0614
R0615
C0612
R0613
TP5704
C5200
R0150
C0174
Q0611
R5717
R5716
R5714
R5715
C5725
R5741
C5740
R0617
R5201
C5201
L5202 C5202
R5207
C5723
C0611
R5718
C5712
R5713 R5712
TP_060SQ
C0145
C0146
C0149
C5719
TP_060SQ
Q5201
R0148
C0147
R0149
C0148
R0612
TP5705
R5203 TP5701
R5202
R5700
C5714
C5722
L5203
C5206
C5716
U0103
C0196
C0157
C5708
:/
/
w
D5201
C5205
C5207
C5204
R5204
R5205
C5203
C5221
C5222
C5208
C5717
C5715
D5701
C5228
C0198
h
tt p
C5223
C0199
C0173
TP5702
C5225
C5236
J0103
C0175
R0139
TP_060SQ
C5239
R0173
C0176
C0153
L0194
TP_060SQ
U5701
Y5701
L0195
R0111
C0112
R0157
R0117
C0150 C0152
R0182 R0181
TP_060SQ
C5700
R5710
C5710
R5704
U5201
C5729 TP5703 C0111
R0112
tp_060sq TP_060SQ
C5233
C5237
C5227
C5224
E5701
R0175
VR5701 C5718
E5703
C0109
C5711
R5222
C0119 VR0118
R0118
C0197
C5238
R5216
R5711
C5721
R5224
C5234
C5231
C5232
C5220
R5223 C5230 C5229
R5225
UHF Main Board Solder Side
R0443
C0411
R0441
R5521
Q5530
R5522
VR0450
C5642
R5531
C0450
R0450
R0455
VR0421 VR0441 VR0444 VR0471
D5601
VR0435
R0456
R0451 C0454
C0472
VR0419
C0451 C0436
C0421 C0442 R0444 C0444
UHF Main Board Solder Side
PCB No. 8485668Z01
5-3
UHF GM950i, Controller Schematic Diagram
MIC_PTT
R0116
J0102
1
2
3
4
5
6
7
8
GND
7
+5V
Q0161
R0165
7
Y
U0105-2
MC3403
GND
TP0105
8
TP0104
+5V
J0101
D0101
R0103
10K
BUS+ 15
ANALOG_1 10
ANALOG_2 11
ANALOG_3 13
LED_CE 12
SPI_DATA_BUF 6
LED_CLCK_BUF 5
LCD_CLCK_BUF 8
3
61
60
48
44
35
32
26
4
3
2
R0104
33K
FLT_A+ 17
+5V 9
2
R0121
R0122
C0121
100K
NU
.039uF
C0125
0.1uF
13
R0124
200K
d
i
o
0
NU
.01uF
LED_CE
1
3 U0104-1
74AC08 2
C0127
0.1uF
4
R0137
47K
R0138
4.7K
R0134
10K
9
R0127
200K
1
6
8
.
n
6 U0104-2
74AC08 5
R0135
47K
47K
Q0138
INT_SPKR+
INT_SPKRON_OFF_CONTROL
47K
LCD_CE
e
t
DAC_CE_5
DAC_CE
SPI_DATA_SRC_5
SPI_MOSI
SPI_CLCK_SRC_5
SPI_CLCK_SRC
PA_ENABLE_5
R0142
1K
R0128
10K
VLTG_LIMIT_5
C0147
C0142
R0143
.100uF
47K
RSSI_5
R0111
33K
RSSI
CSQ_DET
C0151
470pF
FAST_SQ_5
FAST_SQ
C0112
.001uF
R0151
10K
30K
R0186
FLT_RX_AUDIO
0
NU
* note 1
C0182
0.1uF
GND
C0152
1uF
8
VAG
AUDIO_PA_ENABLE
26
RX_AUDIO
DET_AUDIO_5
C0153
0.1uF
TP0111
DET_AUDIO
C0157
470pF
R0157
* note 1
C0150
.47uF
RX_AUDIO-SEND
GP3
J0103-5
J0103-7
J0103-8
J0103-6
5
7
8
6
J0103_7
J0103_8
GP3
GP5
12
9V3
47K
6
U0106-2
5 MC3403
7
AUX_RX_IN
UNATTEN_RX_OUT
1
3
2
4
J0103-1
J0103-3
J0103-2
J0103-4
TX_AUDIO_RET
TX_AUDIO_SEND
R0191
10K
NU
C0191
0.1uF
C0149
33pF
14
1
UNATTEN_RX_OUT
SI
CS
SO
VSS
4
5
VAG_7
VAG
R0171
47.5K
2
3
SPI_MOSI
U0105-1
MC3403
1
VAG
2
R0192
0
NU
R0172
47.5K
C0171
10uF
C0172
1uF
SPI_MISO
R0155
68K
0
RSSI_BUF
8
R0152
EEPROM_CE
C0155
33pF
R0156
U0108
8 EEPROM_X25160
VCC
7
6
SPI_CLCK_SRC
HOLD
SCK
3 WP
RX_AUDIO_RET
R0154
9
U0105-4
MC3403 10
10K
10K
R0112
68K
C0111
470pF
13
U0106-4
10 MC3403
+5V
2_1MHZ
12
U0106-3
MC3403
82K
9
R0187
R0185 NU
R0184
30K
23
R0189
C0184
1uF
VAG_BYPASS 28
R0150
51K
2_1MHZ_5 TP0110
R0153 4.7K
NU
LOCK_DET_5
LOCK_DET
R0183
C0181
0.1uF
VAG
PE3
C0110
470pF
22
7
8
40
36
2
U0107-2
MC14053B
INHIBIT
6
0
15
1 1
10
2
GP5
GROUND
R0144
BATTERY_VOLTAGE
C0109
470pF
10K R0182
C0145
.001uF
C0156
47uF
NU
CSQ_DET_5
30K
20
C0148
470pF
C0146
56pF
NU
.001uF
NU
VLTG_LIMIT
(IGNITION_SENSE)
RX_OUT
R0181
19
C0185
100pF
1
R0145
30K
C0141
10uF
+5V
PA_DISABLE
R0188
0
NU
R0149
0
NU
R0141
100
AUX_RX_IN
R0148
470K
+2V5
R0146
0
9V3
47K
UNATTEN_RX_OUT
RX_IN
PL_DPL_IN
GCB3
XTAL_OUT
GCB4
C0199
470pF
C0196 C0197 C0198
470pF 470pF 470pF
10K
U0103
SQ_ATT_OUT
MOD_IN
R0147
180K
U0106-1
3 MC3403
MIC
C0137
.01uF
47K
MOD_IN_5
+2V5
R0136
33K
2
FLAT_TX_AUDIO
Q0137
MIC_PTT
R0139
240K
200K
+5V
SQ_ATT_OUT_5
37
NC
GCB5 3
4_BIT_ATTEN_OUT
GCB1
6
FRACN_CE
C0194
470pF
5_BIT_ATTEN_OUT
AFIC
R0131
+5V
CHIP_SELECT
39
SPI_DATA
FRACN_CE_5
FRACN_CE
HIGH_LOW_BAND_5
HIGH_LOW_BAND
SQ_ATT_IN_5
SQ_ATT_IN
270nH
UNATTEN_RX_OUT
16
SQ_ATTEN_IN
18
SQ_ATTEN_OUT
PL_DPL_DECODER_OUT
13 AUX_TX_IN
U0107-1
MC14053B
12
6
0 INHIBIT
14
13 1
11
14
6.8K
C0122
R0125
C0126
0.1uF
U0105-3
MC3403
SPI_CLK_5
SPI_DATA_5
SPI_CLK
SPI_MOSI
0.1uF
32 PL_CLOCK_STROBE
R0130
0
NU
12
220K
R0123
33
27
EXT_ALERT_TONE_IN
R0107
100
+2V5
160K
30
CLK_E
29
1
64
63
62
59
58
57
56
R0126
HOOK 3
MIC_PTT 4
MIC 16
HANDSET_AUDIO 14
INT_SPKR+ 1
INT_SPKR- 2
ON_OFF_CONTROL 18
SPI_CLCK_SRC
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
R0109
47K
AFIC_CE
B+_CONTROL
SPI_MISO
SPI_MOSI
SPI_CLCK_SRC
8 U0104-3
74AC08 10
SPI_DATA_SRC
33
XTL
31
EXTAL
IRQ 46
XIRQ 45
28
STRA
1
BUS+
7
19
20
DAC_CE
RESET
43
R_W*
30
MC68HC711E20
PD0
PD1
PD2
PD3
PD4
PD5
NC10
NC9
NC8
NC7
NC6
NC5
NC4
NC3
NC1
NC
FLT_A+
47
50
51
52
53
54
U0101
R0108
47K
R0175
150K
.m
y
r
a
R0100
0
NU
23
VSS
49
VSS
24
VSS
C0175
.001uF
PBIAS_RESISTOR
R0120
10K
TP0108
5
4
5
55
VDD
VRH 22
VRL 21
20
18
16
14
19
17
15
13
MC74HC138A
+5V
6
PB1
PB2
PB3
PB4
PB5
PB6
PB7
C0162
0.1uF
3.3uF
w
11
10
9
8
7
6
5
1
2
3
+5V
w
EEPROM_CE
AFIC_CE
DAC_CE
FRACN_CE
OPTION_BD_CE
LED_CE
LCD_CE
A0
Y0
A1
Y1 U0102 A2
Y2
Y3
Y4
CS1
Y5
Y6
CS2
Y7
CS3
C0105
0.1uF
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
VDD
15
14
13
12
11
10
9
7
PB0
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
16
MODB
25
MODA
27
R0101
10K
12
42
41
40
39
38
37
36
34
+5V
L0194
270nH
L0195
C0174
:/
/
w
C0101
0.1uF
SPI_MOSI
SPI_CLCK_SRC
RESET
TP0109
9V3
+5V
1uF
C0176
29
K9V1_ENABLE
9V3
+5V
SPI_CLCK_SRC
C0161
0 NU
1uF
R0105
10K
U0104-4 11
13 74AC08
C0131
0.1uF
R0173
C0163
0.1uF
C0173
12
1 XX
C0170
TIMING_CAP
C0103
3.3uF
R0166
10K
L0170
33000nH
R0161
100K
0.1uF
100K
SERIAL_DATA_IN
K9V1_ENABLE_5
C0117
33pF
C0115
22pF
C0104
.01uF
R0163
6
RESET 34
4.7K
RESET
R0162
10K
5
AUX_RX_IN
R0106
2.2K
USW_+5V_CL
C0133
0.1uF PWR_GND
VEE VSS
8
7
XX
0
+5V
R0164
1MEG
NU
25 PL_CAP
C0114
33pF
R0115
1.8MEG
+2V5
C0164
.0047uF
R0167
47K
47K
R0102
C0132
0.1uF PWR_GND
GND
11
h
tt p
R0110
10K
X
DPL_CAP
Q0114
R0114
4.7K
24
R0113
10K
TP0106 TP0107
16
VDD
U0107-4
14
4_BIT_ATTEN_IN
15
5_BIT_ATTEN_IN
21
TX_OUT
WDT_DISABLE 4
1
VDDH1
17
VDDH2 38
VDDL
L0114 C0116 Y0114
33uH 3.6pF INSTPAR
+5V
GND
6
XX
XX
+5V
+5V
VAG_VOLUME
C0102
470pF
PA2
PC0
PC1
PC2
PC3
PC5
PB4
PB5
PB7
C0134
0.1uF PWR_GND
GND
11
PWR_GND
ADAPT
35 XTAL_IN
(GP6_OUT)
ADAPT_5
VR0118
5.1V
31
(GP3_OUT)
R0119
1K
C0119
470pF
C0118
470pF
4
VCC
U0106-5
4
VCC
U0105-5
14
VCC
U0104-5
SERIAL_CLOCK_IN
(GP5-IN)
(GP5_OUT)
270
TX_IN
(GP3-IN)
(GP6-IN)
4.7K
U0107-3
MC14053B
INHIBIT
+5V
9V3
+5V
SPI_MISO
J0102_3
(GP6)
SPI_MOSI
OPTION_BD_CE
SPI_CLCK_SRC
(GP4)
J0102_7
+5V
11
(GP1-IN)
270
9V3
+5V
10
(GP2-OUT)
R0118
9 PRE_EMPHASIS_OUT
(GP4-IN)
R0117
C0154
0.1uF
0102725B33_CNTL
(64 CHANNEL 12,5kHz)
GEPD5459-1
0102725B39_CNTL
(64 CHANNEL 20/25kHz)
GEPD5461-1
note 1: values are depending on channel spacing
changed by: R0157
changed by: R0186
VAG
0102725B33
0102725B39
0102725B33
0102725B39
(128 CHANNEL 12,5kHz) 15k
(128 CHANNEL 20/25kHz) 30k
27k
UHF GM950i, Controller Schematic Diagram
1 of 2
5-5
UHF GM950i, Controller_IO Schematic Diagram
+5V
+5V
+5V
+5V
(GP1)
R0431
R0432
4.7K
47K
R0413
47K
R0462
4.7K
R0461
47K
PC5
(GP5)
Q0461
R0412
4.7K
PC1
(GP3)
PC2
47K
Q0431
Q0412
47K
47K
C0461
.01uF
47K
C0464
470pF
R0463
270
47K
C0413
.01uF
47K
VR0464
14V
R0414
270
Q0462
C0412
470pF
VR0411
14V
Q0411
R0411
R0464
PB4
+5V
FLT_A+
PB5
h
tt p
10K
10K
C0463
.01uF
R0465
0
NU
C0411
.01uF
R0415
0
NU
D0471
NU
XX
EMERGENCY_CONTROL
J0103_8
XX
XX
J0103_7
(GP2)
R0442
4.7K
NU
R0443
4.7K
Q0441
NU
R0441
10K
C0442
470pF
PC0
C0414
470pF
:/
/
w
C0462
470pF
+5V
(GP4)
+5V
(GP6)
Q0432
C0435
.01uF
J0102_7
47K
R0435
270
C0436
470pF
R0438
PB7
10K
C0438
.01uF
0
C0439
470pF
FLT_A+
RX_AUDIO
R0402
1K
C0402
.0033uF
R0407
Q0401
7
VCC
9
1
3
8
INV
NINV
RR
M_SS*
15K
R0405
AUDIO_PA_ENABLE
OUT1
OUT2
4
6
C0419
.001uF
e
t
R0406
22K
+5V
R0404
10K
U0401
TDA1519C
SW_B+
GND1
GND2
4.7K
R0476
270
L0401
J0400
C0445
C0421
470pF
VR0421
14V
VR0419
14V
NU
.47uF
VR0445
14V
C0446
470pF
R0446
100K
(IN)
GP1
GP2
(OUT)
BUS+
GP3
(IN/OUT)
GP5
(IN/OUT)
GP6
(IN/OUT)
RSSI
EXT_SPKR+
EXT_SPKREXTERNAL_MIC_AUDIO
IGNITION
GP4
(IN)
FLAT_TX_AUDIO
FLT_RX_AUDIO
ANALOG_GND/SW_B+
GROUND
C0454
470pF
C0450
+5V
R0450
560
SW_B+
FLT_RX_AUDIO
R0455
0
47uF
R0426
47K
R0451
100K
R0427
0
C0451
470pF
VR0450
14V
(IGNITION_SENSE)
R0454
1K
FLT_A+
47K
Q0421
R0456
0
NU
RSSI_BUF
47K
R0423
4.7K
NU
C0406
.001uF
C0420
.001uF
VR0420
14V
NU
C0455
470pF
VR0454
14V
R0422
IGNITION_CONTROL
10K
C0422
470pF
INT_SPKR-
FLAT_TX_AUDIO
PE3
C0405
.001uF
3
4
6
8
12
14
15
16
1
2
10
9
5
11
13
7
L0402
C0404
47uF
C0403
0.1uF
NU
VR0471
33V
C0472
470pF
2 5
10K
VR0444
5.1V
MIC
1
6
8
.
n
C0407
.1uF
C0401
.100uF
270
C0444
470pF
47K
d
i
o
J0102_3
R0401
R0444
C0471
470pF
VR0435
14V
Q0433
XX
BUS+
.m
y
r
a
47K
XX
47K
w
PC3
Q0471
R0473
68K
NU
R0471
0
NU
XX
C0441
.01uF
R0477
10K
NU
w
PA2
R0437
4.7K
R0436
47K
R0475
4.7K
R0474
47K
R0472
0
VR0441
33V
Q0442
FLT_A+
R0439
0
NU
VR0431
14V
C0431
470pF
VR0422
5.1V
R0425
10K
0102725B33_IO
0102725B39_IO
INT_SPKR+
GEPD5462 -1
FLT_A+
+5V
FLT_A+
+5V
UHF GM950i, Controller_IO Schematic Diagram
2 of 2
5-7
UHF GM950i Main Board - Controller
UHF GM950i Main Board Controller
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113743K15
100nF 16V
C0149
2113740F39
33pF 5% 50V
C0102
2113741F17
470pF 50V
C0150
2311049A05
TANT CP 470nF 10% 25V
C0103
2311049A42
TANT CP 3.3uF 10% 6V
C0151
2113741F17
470pF 50V
C0104
2113741F49
10nF 50V
C0152
2311049A07
C0105
2113743K15
100nF 16V
C0153
2113743K15
C0109
2113741F17
470pF 50V
C0154
2113743K15
100nF 16V
C0110
2113741F17
470pF 50V
C0155
2113740F39
33pF 5% 50V
C0111
2113741F17
470pF 50V
C0157
2113741F17
470pF 50V
C0112
2113741F25
1nF 50V
C0161
2113743K15
100nF 16V
C0114
2113740A41
33pF 5% 50V
C0115
2113740A37
22pF 5% 50V
C0116
2113740G16
C0117
ne
t
C0101
16
Circuit
Ref
TANT CP 1uF 10% 16V
2113743K15
100nF 16V
C0163
2113743K15
100nF 16V
Ceramic Chip 3.6 P
C0164
2113741F41
4.7nF 50V
2113740A41
33pF 5% 50V
C0170
2311049A07
TANT CP 1uF 10% 16V
C0118
2113741F17
470pF 50V
C0171
2311049J23
TANT CP 10uF 10% 6V
C0119
2113741F17
470pF 50V
C0172
2311049A07
TANT CP 1uF 10% 16V
C0121
2113743K05
39nF 16V
C0173
2311049A07
TANT CP 1uF 10% 16V
C0122
2113741F41
4.7nF 50V
C0174
2113743K15
100nF 16V
C0125
2113743K15
100nF 16V
C0175
2113741F25
1nF 50V
C0126
2113743K15
100nF 16V
C0176
2311049A42
TANT CP 3.3 UF 10% 6V
://
w
w
w
C0162
ht
tp
.m
yr
ad
io
8.
100nF 16V
C0127
2113743K15
100nF 16V
C0181
2113743K15
100nF 16V
C0131
2113743K15
100nF 16V
C0182
2113743K15
100nF 16V
C0132
2113743K15
100nF 16V
C0184
2311049A07
TANT CP 1uF 10% 16V
C0133
2113743K15
100nF 16V
C0185
2113740F51
100pF 5% 50V
C0134
2113743K15
100nF 16V
C0191
2113743K15
100nF 16V
C0137
2113741F49
10nF 50V
C0194
2113741F17
470pF 50V
C0141
2311049J26
TANT CP 10uF 20% 16V
C0196
2113741F17
470pF 50V
C0142
2113743A19
100nF 16V
C0197
2113741F17
470pF 50V
C0145
2113741F25
1nF 50V
C0198
2113741F17
470pF 50V
C0148
2113741F17
470pF 50V
C0199
2113741F17
470pF 50V
5-9
Circuit
Ref
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
2113743A19
100nF 16V
C0472
2113741F17
470pF 50V
C0402
2113741F37
3.3nF 50V
D0101
4813833C02
C0404
2311049A99
DIODE DUAL SOT
MMBD6100
C0405
2113741F25
1nF 50V
J0101
0902636Y01
Connector Flex Side Entry
C0406
2113741F25
1nF 50V
J0102
0904424J06
Connector double row 8pin
C0407
2109720D14
CER LOW DIST 100nF
J0103
0904424J06
C0411
2113741F49
10nF 50V
J0400
2804503J01
Accessory Connector 16
C0412
2113741F17
470pF 50V
L0114
2460578C43
INDUCTOR CHIP 33.0UH
C0413
2113741F49
10nF 50V
L0170
2462587K26
CHIP IND 33000 NH
C0414
2113741F17
470pF 50V
L0194
2462587Q40
C0419
2113741F25
1nF 50V
L0195
2462587Q40
COIL CHIP 270nH
C0420
2113741F25
1nF 50V
L0401
2484657R01
Ferrite Bead
C0421
2113741F17
470pF 50V
L0402
2484657R01
Ferrite Bead
C0422
2113741F17
470pF 50V
C0431
2113741F17
470pF 50V
C0435
2113741F49
10nF 50V
C0436
2113741F17
470pF 50V
C0438
2113741F49
10nF 50V
C0439
2113741F17
470pF 50V
C0441
2113741F49
C0442
2113741F17
C0444
2113741F17
C0445
2311049A05
470pF 50V
C0455
2113741F17
470pF 50V
C0461
2113741F49
10nF 50V
C0462
2113741F17
470pF 50V
C0463
2113741F49
10nF 50V
C0464
2113741F17
470pF 50V
C0471
2113741F17
470pF 50V
ne
8.
.m
yr
ad
TSTR NPN DIG 47k/47k
Q0138
4880048M01
Q0161
4880214G02
TSTR NPN 40V .2A
Q0401
4880214G02
TSTR NPN 40V .2A
Q0411
4880214G02
TSTR NPN 40V .2A
Q0412
4880048M01
Q0421
4880048M01
Q0431
4880048M01
Q0432
4880048M01
Q0433
4880214G02
TSTR NPN 40V .2A
Q0442
4880052M01
TSTR NPN DRLNGTN
Q0461
4880048M01
Q0462
4880214G02
TSTR NPN 40V .2A
Q0471
4880048M01
R0101
0662057A73
10k 1/16W 5%
R0102
0662057A65
4k7 1/16W 5%
R0103
0662057A73
10k 1/16W 5%
R0104
0662057A85
33k 1/16W 5%
R0105
0662057A73
10k 1/16W 5%
://
w
w
ht
tp
2113741F17
16
4880048M01
C0454
io
Q0137
w
TSTR NPN 40V .2A
470pF 50V
470pF 50V
5-10
4880214G02
470pF 50V
2113741F17
C0450
COIL CHIP 270nH
Q0114
10nF 50V
C0451
C0446
t
C0401
2113741F17
470pF 50V
2311049A99
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
0662057A57
2k2 1/16W 5%
R0145
0662057A84
30k 1/16W 5%
R0107
0662057A25
100 1/16W 5%
R0147
0662057B04
180k 1/16W 5%
R0108
0662057A89
47k 1/16W 5%
R0148
0662057B14
470k 1/16W 5%
R0109
0662057A89
47k 1/16W 5%
R0149
0662057B47
0 1/16W
R0110
0662057A73
10k 1/16W 5%
R0150
0662057A90
51k 1/16W 5%
R0111
0662057A85
33k 1/16W 5%
R0151
0662057A73
10k 1/16W 5%
R0112
0662057A93
68k 1/16W 5%
R0152
0662057A73
10k 1/16W 5%
R0113
0662057A73
10k 1/16W 5%
R0154
0662057A73
R0114
0662057A65
4k7 1/16W 5%
R0155
0662057A93
68k 1/16W 5%
R0115
0662057B28
1.8M 1/16W 5%
R0156
0662057B47
0 1/16W
R0116
0662057C61
270 1/16W 5%
R0157
R0117
0662057C61
270 1/16W 5%
0662057A77
0662057A84
15k 1/16W 5% (12.5kHz)
30k 1/16W 5% (20/25kHz)
R0118
0662057A65
4k7 1/16W 5%
0662057A97
100k 1/16W
R0119
0662057A49
1k 1/16W 5%
R0120
0662057A73
10k 1/16W 5%
R0121
0662057B03
160k 1/16W 5%
R0122
0662057A93
68k 1/16W 5%
R0123
0662057A97
100k 1/16W (not used)
R0124
0662057A69
6k8 1/16W 5%
R0125
0662057B05
200k 1/16W
R0126
0662057B05
200k 1/16W
R0127
0662057B05
200k 1/16W
R0128
0662057A73
10k 1/16W 5%
ne
10k 1/16W 5%
8.
io
.m
yr
ad
w
://
w
w
ht
tp
R0161
t
R0106
16
Circuit
Ref
R0162
0662057A73
10k 1/16W 5%
R0163
0662057A97
100k 1/16W
R0165
0662057A89
47k 1/16W 5%
R0166
0662057A73
10k 1/16W 5%
R0167
0662057A89
47k 1/16W 5%
R0171
0662057R92
47.5k .1W 1%
R0172
0662057R92
47.5k .1W 1%
R0175
0662057B02
150k 1/16W
R0181
0662057A84
30k 1/16W 5%
R0182
0662057A73
10k 1/16W 5%
R0183
0662057A73
10k 1/16W 5%
R0184
0662057A84
30k 1/16W 5%
R0186
0662057A83
0662057A90
27k 1/16W 5% (12.5kHz)
51k 1/16W 5% (20/25kHz)
R0134
0662057A73
10k 1/16W 5%
R0135
0662057A89
47k 1/16W 5%
R0136
0662057A85
33k 1/16W 5%
R0137
0662057A89
47k 1/16W 5%
R0189
0662057A95
82k 1/16W 5%
R0138
0662057A65
4k7 1/16W 5%
R0401
0662057A65
4k7 1/16W 5%
R0139
0662057B07
240k 1/16W
R0402
0662057A49
1k 1/16W 5%
R0141
0662057A25
100 1/16W 5%
R0404
0662057A73
10k 1/16W 5%
R0142
0662057A49
1k 1/16W 5%
R0405
0662057A73
10k 1/16W 5%
R0143
0662057A89
47k 1/16W 5%
R0406
0662057A81
22k 1/16W 5%
R0144
0662057A89
47k 1/16W 5%
5-11
Circuit
Ref
0662057A73
10k 1/16W 5%
R0412
0662057A65
4k7 1/16W 5%
R0413
0662057A89
47k 1/16W 5%
R0414
0662057C61
270 1/16W 5%
R0422
0662057A73
10k 1/16W 5%
R0425
0662057A73
10k 1/16W 5%
R0426
0662057A89
47k 1/16W 5%
R0427
0662057B47
0 1/16W
R0431
0662057A89
47k 1/16W 5%
R0432
0662057A65
4k7 1/16W 5%
R0435
0662057C61
270 1/16W 5%
R0436
0662057A89
47k 1/16W 5%
R0437
0662057A65
4k7 1/16W 5%
R0438
0662057A73
10k 1/16W 5%
R0441
0662057A73
10k 1/16W 5%
R0443
0662057A65
4k7 1/16W 5%
R0444
0662057C61
270 1/16W 5%
R0446
0662057A97
100k 1/16W
R0450
0662057A43
R0451
0662057A97
R0454
0662057A49
R0455
0662057B47
://
w
w
560 1/16W 5%
100k 1/16W
1k 1/16W 5%
ht
tp
0 1/16W
R0463
0662057C61
270 1/16W 5%
R0464
0662057A73
10k 1/16W 5%
R0472
0662057B47
0 1/16W
R0474
0662057A89
47k 1/16W 5%
R0475
0662057A65
4k7 1/16W 5%
R0476
0662057C61
270 1/16W 5%
U0101
5102898X66
PROC350 PLAT S/W
R010000 A3
R0461
R0462
5-12
0662057A89
47k 1/16W 5%
0662057A65
4k7 1/16W 5%
5113805A30
IC 10F8 DCDR/REMUX
74HC138
U0103
5102227J35
CHIP CAR TEST 27J35
U0104
5105492X36
74AC08 4 AND GATES
U0105
5183222M49
IC QUAD OPAMP_3403_
U0106
5183222M49
IC QUAD OPAMP_3403_
U0107
5184704M60
IC MUX/DEMUX,TRIPLE
2-CHNL
U0108
5105462G78
IC EEPROM !&K SPEI
CMOS
U0401
5109699X01
VR0118
4880140L06
DIODE 5.1V 5% 225mW
VR0411
4813830A27
DIODE 14V 5% 225mW
VR0421
4813830A27
DIODE 14V 5% 225mW
t
R0411
U0102
ne
15k 1/16W 5%
Description
8.
0662057A77
w
R0407
Motorola
Part No.
AUDIO PA TDA1915C
16
Description
io
Motorola
Part No.
.m
yr
ad
Circuit
Ref
VR0422
4880140L06
DIODE 5.1V 5% 225mW
VR0431
4813830A27
DIODE 14V 5% 225mW
VR0435
4813830A27
DIODE 14V 5% 225mW
VR0441
4813830A40
SOC23 AUTO SDN
VR0444
4880140L06
DIODE 5.1V 5% 225mW
VR0445
4813830A27
DIODE 14V 5% 225mW
VR0450
4813830A27
DIODE 14V 5% 225mW
VR0454
4813830A27
DIODE 14V 5% 225mW
VR0464
4813830A27
DIODE 14V 5% 225mW
VR0471
4813830A40
SOC23 AUTO SDN
Y0114
4880113R01
CRYSTAL 7.9488
UHF GM950E, Controller Schematic Diagram
MIC_PTT
R0116
J0102
1
2
3
4
5
6
7
8
VR0118
5.1V
+5V
5
7
U0105-2
MC3403
GND
TP0105
8
FLT_A+
47
50
51
52
53
54
TP0104
+5V
D0101
R0103
10K
2
R0121
R0130
0
NU
+2V5
160K
R0122
C0121
100K
NU
C0125
0.1uF
.039uF
13
R0124
6.8K
R0125
200K
LED_CE
200K
1
3 U0104-1
74AC08 2
+5V
C0127
0.1uF
4
R0134
10K
R0137
47K
R0138
4.7K
9
R0127
200K
1
6
8
.
n
6 U0104-2
74AC08 5
MIC_PTT
47K
Q0138
INT_SPKR+
47K
U0106-1
3 MC3403
NU
47K
e
t
LCD_CE
DAC_CE_5
DAC_CE
SPI_DATA_SRC_5
SPI_MOSI
SPI_CLCK_SRC_5
SPI_CLCK_SRC
PA_ENABLE_5
R0142
1K
R0128
C0141
10uF
+5V
PA_DISABLE
10K
VLTG_LIMIT_5
R0143
.100uF
NU
47K
NU
C0147
R0145
30K
RSSI_5
RSSI
R0111
33K
CSQ_DET
C0151
470pF
FAST_SQ_5
FAST_SQ
10K R0182
C0112
.001uF
6
U0106-2
5 MC3403
14
U0106-3
MC3403
13 NU
R0152
R0151
10K
NU
U0107-2
MC14053B
INHIBIT
6
0
15
1 1
10
R0189
R0183 NU
82K NU
C0184
NU
2
9
22
7
8
40
36
2
30K
R0186
27k
NU
R0184
30K
C0182
0.1uF
23
NU
R0187
R0185 NU
C0181
0.1uF
GND
C0152
1uF
8
U0106-4
10 MC3403
FLT_RX_AUDIO
0
NU
VAG
VAG_BYPASS 28
12
TIMING_CAP
R0150
51K
AUDIO_PA_ENABLE
26
RX_AUDIO
DET_AUDIO_5
C0153
0.1uF
TP0111
DET_AUDIO
C0157
470pF
R0157
* note 1
C0150
.47uF
C0148
470pF
RX_AUDIO-SEND
GP3
GP5
GROUND
J0103-5
J0103-7
J0103-8
J0103-6
5
7
8
6
J0103_7
J0103_8
GP3
GP5
+5V
C0145
.001uF
2_1MHZ_5
TP0110
2_1MHZ
7
AUX_RX_IN
UNATTEN_RX_OUT
1
3
2
4
J0103-1
J0103-3
J0103-2
J0103-4
TX_AUDIO_RET
TX_AUDIO_SEND
R0191
10K
NU
C0191
0.1uF
NU
C0149
33pF
8
U0108
NU
EEPROM_X25160
1
UNATTEN_RX_OUT
EEPROM_CE
9V3
VAG_7
VAG
VCC
7
HOLD
SCK
3 WP
RX_AUDIO_RET
C0155
33pF
R0156
12
10K
R0112
68K
C0111
470pF
RX_OUT
C0146
56pF
NU
47K
R0153 4.7K
NU
LOCK_DET_5
LOCK_DET
C0110
470pF
30K
20
VAG
PE3
R0181
19
C0185
100pF
NU
R0149
0
BATTERY_VOLTAGE
C0109
470pF
R0188
0
NU
R0147
180K
C0156
47uF
NU
CSQ_DET_5
C0196 C0197 C0198
470pF 470pF 470pF
1
.001uF
NU
VLTG_LIMIT
(IGNITION_SENSE)
UNATTEN_RX_OUT
RX_IN
PL_DPL_IN
GCB3
XTAL_OUT
GCB4
AUX_RX_IN
R0144 NU
C0142
C0199
470pF
1uF
R0148
470K
+2V5
NU
R0141
100
MOD_IN
+2V5
R0136
33K
R0146
0
9V3
47K
R0139
240K
2
NU
MIC
C0137
.01uF
47K
0
NU
NU
R0135
FLAT_TX_AUDIO
Q0137
6
SQ_ATT_OUT
MOD_IN_5
10K
AFIC
R0131
SQ_ATT_OUT_5
37
NC
GCB5 3
5_BIT_ATTEN_OUT
GCB1
FRACN_CE_5
FRACN_CE
HIGH_LOW_BAND_5
HIGH_LOW_BAND
SQ_ATT_IN_5
SQ_ATT_IN
FRACN_CE
C0194
470pF
4_BIT_ATTEN_OUT
U0103
SPI_DATA
270nH
UNATTEN_RX_OUT
16
SQ_ATTEN_IN
18
SQ_ATTEN_OUT
PL_DPL_DECODER_OUT
SPI_CLK
SPI_MOSI
0.1uF
32 PL_CLOCK_STROBE
.01uF
+5V
CHIP_SELECT
39
C0122
C0126
0.1uF
27
12
14
U0105-3
MC3403
33
13 AUX_TX_IN
U0107-1 NU
MC14053B
6
0 INHIBIT 14
13 1
11
12
220K
R0123
30
CLK_E
RESET
43
R_W*
30
29
1
64
63
62
59
58
57
56
R0126
HOOK 3
MIC_PTT 4
MIC 16
HANDSET_AUDIO 14
INT_SPKR+ 1
INT_SPKR- 2
ON_OFF_CONTROL 18
SPI_CLCK_SRC
R0107
100
AFIC_CE
B+_CONTROL
SPI_MISO
SPI_MOSI
SPI_CLCK_SRC
8 U0104-3
74AC08 10
SPI_DATA_SRC
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
1
BUS+
7
19
20
DAC_CE
33
XTL
31
EXTAL
IRQ 46
XIRQ 45
28
STRA
R0109
47K
d
i
o
BUS+ 15
ANALOG_1 10
ANALOG_2 11
ANALOG_3 13
LED_CE 12
SPI_DATA_BUF 6
LED_CLCK_BUF 5
LCD_CLCK_BUF 8
3
61
60
48
44
35
32
26
4
3
2
R0104
33K
FLT_A+ 17
+5V 9
MC68HC711E20
PD0
PD1
PD2
PD3
PD4
PD5
NC10
NC9
NC8
NC7
NC6
NC5
NC4
NC3
NC1
NC
J0101
U0101
R0108
47K
.m
y
r
a
R0100
0
NU
23
VSS
49
VSS
24
VSS
R0175
150K
C0175
.001uF
SPI_DATA_5
0.1uF
25 PL_CAP
R0120
10K
TP0108
35 XTAL_IN
4
5
55
VDD
VRH 22
VRL 21
20
18
16
14
19
17
15
13
MC74HC138A
+5V
6
PB1
PB2
PB3
PB4
PB5
PB6
PB7
SPI_CLK_5
L0195
1uF
3.3uF
w
11
10
9
8
7
6
5
1
2
3
+5V
w
EEPROM_CE
AFIC_CE
DAC_CE
FRACN_CE
OPTION_BD_CE
LED_CE
LCD_CE
A0
Y0
A1
Y1 U0102 A2
Y2
Y3
Y4
CS1
Y5
CS2
Y6
CS3
Y7
C0105
0.1uF
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
VDD
15
14
13
12
11
10
9
7
PB0
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
16
MODB
25
MODA
27
R0101
10K
12
42
41
40
39
38
37
36
34
+5V
L0194
270nH
C0174
:/
/
w
C0101
0.1uF
SPI_MOSI
SPI_CLCK_SRC
RESET
TP0109
29
K9V1_ENABLE
9V3
+5V
C0170
R0173
NU
0
C0176
NU
1uF
R0105
10K
C0162
0.1uF
100K
C0163
0.1uF
C0173
RESET 34
C0103
3.3uF
6
R0166
10K
AUX_RX_IN
K9V1_ENABLE_5
R0163
DPL_CAP
C0104
.01uF
RESET
C0117
33pF
C0115
22pF
C0161
24
+5V
R0106
2.2K
4.7K
9V3
+5V
SPI_CLCK_SRC
14
4_BIT_ATTEN_IN
15
5_BIT_ATTEN_IN
21
TX_OUT
WDT_DISABLE 4
1
VDDH1
17
VDDH2
38
VDDL
R0165
Y
47K
R0102
C0131
0.1uF
C0133
0.1uF PWR_GND
VEE VSS
7
8
L0170
33000nH
R0161
100K
R0162
10K
U0104-4 11
13 74AC08
+5V
PBIAS_RESISTOR
Q0161
+2V5
R0164
1MEG
NU
h
tt p
C0114
33pF
+5V
C0164
.0047uF
R0167
47K
R0115
1.8MEG
5
R0110
10K
X
EXT_ALERT_TONE_IN
L0114 C0116 Y0114
33uH 3.6pF INSTPAR
Q0114
R0114
4.7K
USW_+5V_CL
C0132
0.1uF PWR_GND
GND
11
12
1 XX
+5V
R0113
10K
TP0106 TP0107
C0134
0.1uF PWR_GND
GND
11
GND
7
31
C0102
470pF
PA2
PC0
PC1
PC2
PC3
PC5
PB4
PB5
PB7
GND
6
XX
XX
16 NU
VDD
U0107-4
4 NU
VCC
U0106-5
4
VCC
U0105-5
PWR_GND
ADAPT
SERIAL_DATA_IN
(GP6_OUT)
ADAPT_5
VAG_VOLUME
(GP3_OUT)
R0119
1K
C0119
470pF
C0118
470pF
14
VCC
U0104-5
11
(GP5-IN)
(GP5_OUT)
270
SERIAL_CLOCK_IN
(GP3-IN)
(GP6-IN)
4.7K
U0107-3
MC14053B
INHIBIT
XX
NU
0
+5V
9V3
+5V
SPI_MISO
J0102_3
(GP6)
SPI_MOSI
OPTION_BD_CE
SPI_CLCK_SRC
(GP4)
J0102_7
+5V
TX_IN
(GP1-IN)
270
9V3
+5V
10
(GP2-OUT)
R0118
9 PRE_EMPHASIS_OUT
(GP4-IN)
R0117
SI
CS
SO
VSS
4
6
5
SPI_CLCK_SRC
R0171
47.5K
2
3
SPI_MOSI
U0105-1
MC3403
1
VAG
2
R0192
0
NU
R0172
47.5K
C0171
10uF
C0172
1uF
SPI_MISO
R0155
68K
0
RSSI_BUF
8
R0154
9
U0105-4
MC3403 10
10K
NU
C0154
0.1uF
0102725B34_CNTL
( 4 CHANNEL 12,5kHz)
GEPD5446-1
0102725B40_CNTL
GEPD5460-1
changed by: R0157
0102725B34 (4 CHANNEL 12,5kHz) 15k
0102725B40 (4 CHANNEL 20/25kHz) 30k
VAG
UHF GM950E, Controller Schematic Diagram
1 of 2
5-13
UHF GM950E, Controller_IO Schematic Diagram
+5V
+5V
+5V
+5V
(GP1)
R0431
R0432
4.7K
47K
R0413
47K
R0462
4.7K
NU
R0461
47K
PC5
(GP5)
Q0461
NU
PC2
47K
C0461
.01uF
NU
47K
C0464
470pF
NU
R0463
270
NU
(GP3)
47K
Q0431
47K
47K
C0431
470pF
R0414
270
NU
C0412
470pF
NU
VR0411
14V
NU
Q0411
NU
R0411
FLT_A+
+5V
PB5
PB4
10K
NU
C0463
.01uF
NU
R0465
0
R0415
0
C0411
.01uF
NU
D0471
NU
XX
EMERGENCY_CONTROL
J0103_8
h
tt p
10K
NU
XX
XX
J0103_7
(GP2)
R0442
4.7K
NU
R0441
10K
NU
R0443
4.7K
NU
Q0441
NU
PC0
C0414
470pF
NU
:/
/
w
C0462
470pF
NU
+5V
(GP4)
R0474
47K
PA2
PC3
Q0471
(GP6)
R0471
0
R0473
68K
NU
Q0432
NU
47K
J0102_7
47K
Q0433
NU
R0438
C0436
470pF
NU
R0435
270
NU
VR0435
14V
NU
10K
NU
J0102_3
FLT_A+
RX_AUDIO
4.7K
R0402
1K
C0402
.0033uF
SW_B+
+5V
R0406
22K
R0407
R0404
10K
Q0401
U0401
TDA1519C
VCC
9
1
3
8
INV
NINV
RR
M_SS*
OUT1
OUT2
4
C0419
.001uF
e
t
7
1
6
8
.
n
C0407
.1uF
C0401
.100uF
10K
L0401
VR0471
33V
NU
C0472
470pF
NU
VR0419
14V
NU
3
4
6
8
12
14
15
16
1
2
10
9
5
11
13
7
MIC
C0421
470pF
VR0421
14V
C0445
NU
.47uF
FLAT_TX_AUDIO
VR0445
14V
NU
C0446
470pF
R0446
100K
(IN)
GP1
GP2
(OUT)
BUS+
GP3
(IN/OUT)
GP5
(IN/OUT)
GP6
(IN/OUT)
RSSI
EXT_SPKR+
IGNITION
GP4
(IN)
FLAT_TX_AUDIO
FLT_RX_AUDIO
ANALOG_GND/SW_B+
GROUND
C0454
470pF
+5V
FLT_RX_AUDIO
C0450
NU
R0450 NU
47uF
R0426
47K
SW_B+
560
R0455
0
C0451
470pF
R0451
100K
R0427
0
VR0450
14V
NU
(IGNITION_SENSE)
Q0421
R0454
1K
FLT_A+
47K
R0456
0
NU
RSSI_BUF
R0423
4.7K
NU
C0406
.001uF
VR0420
14V
NU
C0455
470pF
VR0454
14V
R0422
IGNITION_CONTROL
10K
C0422
470pF
INT_SPKR+
VR0444
5.1V
L0402
C0420
.001uF
INT_SPKR-
R0476
270
NU
PE3
C0405
.001uF
6
C0404
47uF
C0403
0.1uF
NU
270
C0444
470pF
47K
GND1 GND2
2 5
AUDIO_PA_ENABLE
R0444
BUS+
J0400
15K
R0405
XX
R0477
10K
NU
47K
d
i
o
C0438
.01uF
NU
C0439
470pF
NU
XX
XX
C0471
470pF
NU
PB7
R0439
0
NU
VR0441
33V
NU
C0442
470pF
NU
47K
.m
y
r
a
C0435
.01uF
NU
NU
w
R0437
4.7K
NU
R0436
47K
R0475
4.7K
NU
w
R0472
0
Q0442
NU
C0441
.01uF
NU
FLT_A+
+5V
R0401
VR0431
14V
47K
Q0462
NU
R0464
PC1
Q0412
NU
C0413
.01uF
NU
VR0464
14V
NU
R0412
4.7K
NU
VR0422
5.1V
R0425
10K
0102725B33_IO
(64 CHANNEL 12.5kHz)
0102725B39_IO
0102725B34_IO
0102725B40_IO
(4 CHANNEL 12.5kHz)
GEPD5448 -1
FLT_A+
+5V
FLT_A+
+5V
0102725B34_IO
UHF GM950E, Controller_IO Schematic Diagram
2 of 2
5-15
UHF GM950E Main Board - Controller
UHF GM950E Main Board Controller
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113743K15
100nF 16V
C0150
2311049A05
C0102
2113741F17
470pF 50V
C0151
2113741F17
470pF 50V
C0103
2311049A42
C0152
2311049A07
TANT CP 1uF 10% 16V
C0104
2113741F49
10nF 50V
C0153
2113743K15
C0105
2113743K15
100nF 16V
C0154
2113743K15
C0109
2113741F17
470pF 50V
C0155
2113740F39
33pF 5% 50V
C0110
2113741F17
470pF 50V
C0157
2113741F17
470pF 50V
C0111
2113741F17
470pF 50V
C0161
2113743K15
100nF 16V
C0112
2113741F25
1nF 50V
C0162
2113743K15
100nF 16V
C0114
2113740A41
33pF 5% 50V
C0115
2113740A37
22pF 5% 50V
C0116
2113740G16
C0117
ne
t
C0101
16
Circuit
Ref
100nF 16V
2113743K15
100nF 16V
C0164
2113741F41
4.7nF 50V
CERAMIC CHIP 3.6 P
C0170
2311049A07
TANT CP 1uF 10% 16V
2113740A41
33pF 5% 50V
C0171
2311049J23
TANT CP 10uF 10% 6V
C0118
2113741F17
470pF 50V
C0172
2311049A07
TANT CP 1uF 10% 16V
C0119
2113741F17
470pF 50V
C0173
2311049A07
TANT CP 1uF 10% 16V
C0121
2113743K05
39nF 16V
C0174
2113743K15
100nF 16V
C0122
2113741F41
47nF 50V
C0175
2113741F25
1nF 50V
C0125
2113743K15
100nF 16V
C0176
2311049A42
TANT CP 3.3 uF 10% 6V
C0126
2113743K15
100nF 16V
C0181
2113743K15
100nF 16V
://
w
w
w
C0163
ht
tp
.m
yr
ad
io
8.
100nF 16V
C0127
2113743K15
100nF 16V
C0182
2113743K15
100nF 16V
C0131
2113743K15
100nF 16V (not used)
C0194
2113741F17
470pF 50V
C0132
2113743K15
100nF 16V
C0196
2113741F17
470pF 50V
C0133
2113743K15
C0197
2113741F17
470pF 50V
C0134
2113743K15
100nF 16V
C0198
2113741F17
470pF 50V
C0137
2113741F49
10nF 50V
C0199
2113741F17
470pF 50V
C0141
2311049J26
C0401
2113743A19
100nF 16V
C0145
2113741F25
1nF 50V
C0402
2113741F37
3.3nF 50V
C0148
2113741F17
470pF 50V
C0404
2311049A99
C0149
2113740F39
33pF 5% 50V
C0405
2113741F25
1nF 50V
5-17
Motorola
Part No.
Circuit
Ref
Motorola
Part No.
Description
1nF 50V
R0106
0662057A57
2k2 1/16W 5%
C0407
2109720D14
CER LOW DIST 100nF
R0107
0662057A25
100 1/16W 5%
C0419
2113741F25
1nF 50V
R0108
0662057A89
47k 1/16W 5%
C0420
2113741F25
1nF 50V
R0109
0662057A89
47k 1/16W 5%
C0421
2113741F17
470pF 50V
R0110
0662057A73
10k 1/16W 5%
C0422
2113741F17
470pF 50V
R0111
0662057A85
33k 1/16W 5%
C0431
2113741F17
470pF 50V
R0112
0662057A93
68k 1/16W 5%
C0444
2113741F17
470pF 50V
R0113
0662057A73
10k 1/16W 5%
C0454
2113741F17
470pF 50V
R0114
0662057A65
C0455
2113741F17
470pF 50V
R0115
0662057B28
D0101
4813833C02
DUAL SOT MMBD6100
R0116
0662057C61
270 1/16W 5%
J0101
0902636Y01
R0117
0662057C61
270 1/16W 5%
J0102
0904424J06
R0118
0662057A65
4k7 1/16W 5%
J0103
0904424J06
R0119
0662057A49
1k 1/16W 5%
J0400
2804503J01
R0120
0662057A73
10k 1/16W 5%
L0114
2460578C43
Inductor CHIP 33.0UH 1
R0121
0662057B03
160k 1/16W 5%
L0170
2462587K26
CHIP IND 33000 NH
R0122
0662057A93
68k 1/16W 5%
L0194
2462587Q40
COIL CHIP 270nH
R0123
0662057A97
L0195
2462587Q40
COIL CHIP 270nH
R0124
0662057A69
6k8 1/16W 5%
L0401
2484657R01
Ferrite Bead
R0125
0662057B05
200k 1/16W
L0402
2484657R01
Ferrite Bead
R0126
0662057B05
200k 1/16W
Q0114
4880214G02
NPN 40V
R0127
0662057B05
200k 1/16W
Q0137
4880048M01
NPN DIG 47k/47k
R0128
0662057A73
10k 1/16W 5%
ne
8.
4k7 1/16W 5%
16
1.8M 1/16W 5%
Q0401
ht
tp
://
w
w
t
2113741F25
w
C0406
io
Description
.m
yr
ad
Circuit
Ref
4880214G02
NPN 40V
R0137
0662057A89
47k 1/16W 5%
Q0421
4880048M01
NPN DIG 47k/47k
R0138
0662057A65
4k7 1/16W 5%
Q0431
4880048M01
NPN DIG 47k/47k
R0139
0662057B07
240k 1/16W
R0101
0662057A73
10k 1/16W 5%
R0141
0662057A25
100 1/16W 5%
R0102
0662057A65
4k7 1/16W 5%
R0142
0662057A49
1k 1/16W 5%
R0103
0662057A73
10k 1/16W 5%
R0145
0662057A84
30k 1/16W 5%
R0104
0662057A85
33k 1/16W 5%
R0146
0662057B47
0 1/16W
R0105
0662057A73
10k 1/16W 5%
R0147
0662057B04
180k 1/16W 5%
Q0138
Q0161
5-18
4880048M01
NPN DIG 47k/47k
R0130
0662057B47
0 1/16W
4880214G02
NPN 40V
R0134
0662057A73
10k 1/16W 5%
Circuit
Ref
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
0662057B14
470k 1/16W 5%
R0426
0662057A89
47k 1/16W 5%
R0149
0662057B47
0 1/16W
R0427
0662057B47
0 1/16W
R0150
0662057A90
51k 1/16W 5%
R0431
0662057A89
47k 1/16W 5%
R0153
0662057A65
4k7 1/16W 5%
R0432
0662057A65
4k7 1/16W 5%
R0154
0662057A73
10k 1/16W 5%
R0436
0662057A89
47k 1/16W 5%
R0155
0662057A93
68k 1/16W 5%
R0439
0662057B47
0 1/16W
R0156
0662057B47
0 1/16W
R0444
0662057C61
270 1/16W 5%
R0157
0662057A77
0662057A84
15k 1/16W 5% (12.5kHz)
30k 1/16W 5% (20/25kHz)
R0454
0662057A49
R0461
0662057A89
47k 1/16W 5%
R0161
0662057A97
100k 1/16W
R0465
0662057B47
R0162
0662057A73
10k 1/16W 5%
R0471
0662057B47
0 1/16W
R0163
0662057A97
100k 1/16W
R0165
0662057A89
47k 1/16W 5%
R0166
0662057A73
10k 1/16W 5%
R0167
0662057A89
47k 1/16W 5%
R0171
0662057R92
47.5k .1W 1%
R0172
0662057R92
47.5k .1W 1%
R0175
0662057B02
150k 1/16W
R0181
0662057A84
30k 1/16W 5%
R0182
0662057A73
10k 1/16W 5%
R0183
0662057A73
R0184
ne
t
R0148
0 1/16W
R0472
0662057B47
0 1/16W
R0474
0662057A89
47k 1/16W 5%
U0101
5102898X67
PROC350 PLAT S/W
R010000 A2
U0102
5113805A30
IC 10F8 DCDR/REMUX
74HC138
U0103
5102227J35
CHIP CAR TEST 27J35
U0104
5105492X36
74AC08 4 AND GATES
U0105
5183222M49
IC QUAD OPAMP
__3403_
10k 1/16W 5% (not used)
U0401
5109699X01
AUDIO PA TDA1915C
0662057A84
30k 1/16W 5%
VR0118
4880140L06
DIODE 5.1V 5% 225mW
R0401
0662057A65
4k7 1/16W 5%
VR0421
4813830A27
DIODE 14V 5% 225mW
R0402
0662057A49
1k 1/16W 5%
VR0422
4880140L06
DIODE 5.1V 5% 225mW
R0404
0662057A73
10k 1/16W 5%
VR0431
4813830A27
DIODE 14V 5% 225mW
R0405
0662057A73
10k 1/16W 5%
VR0444
4880140L06
DIODE 5.1V 5% 225mW
R0406
0662057A81
22k 1/16W 5%
VR0454
4813830A27
DIODE 14V 5% 225mW
R0407
0662057A77
15k 1/16W 5%
Y0114
4880113R01
CRYSTAL 7.9488
R0413
0662057A89
47k 1/16W 5%
R0415
0662057B47
0 1/16W 5%
R0421
0662057B47
0 1/16W (not used)
R0422
0662057A73
10k 1/16W 5%
R0425
0662057A73
10k 1/16W 5%
.m
yr
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16
8.
1k 1/16W 5%
5-19
ht
tp
://
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w
w
.m
yr
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16
8.
ne
t
5-20
UHF Supply Voltage Schematic Diagram
FLT_A+
USW_+5V
D0621
2
3
R0621
FLT_A+_8
USW_+5V_CL
1
FLT_A+
2.2K
VR0621
5.1V
R0601
10K
C0602
.1uF
1
LM2941T
ON_OFF*
ADJ
R0602
7.5K
C0604
33uF
GND
3
C0603
10uF
C0605
.1uF
R0631
10
D0631
1
3
2
R0632
10
w
R0603
1.2K
C0631
.1uF
R0605
6.8K
9V3
9V3
U0631
LP2951CM
8
7
3
INPUT
OUTPUT
ERROR
FEEDBACK
SENSE
5V_TP
SHUTDOWN
C0632
33uF
1
+5V
5
2
C0633
.022uF
6
RESET
SW_B+
SW_B+
3.3K
R0613
R0617
R0641
C0613
470pF
3.3K
C0635
.1uF
4
1
6
8
.
n
R0612
C0634
47uF
GND
d
i
o
Q0611
R0611
1.2K
9V3_SUPP
.m
y
r
a
Q0601
R0604
1K
w
C0601
470pF
2
C0622
47uF
h
tt p
0
LM2941T
5
VIN
VOUT
:/
/
w
R0606
0
U0601
4
C0621
470pF
30K
470pF
3.3K
3.3K
BATTERY_VOLTAGE
3.3K
3.3K
ON_OFF_CONTROL
B+_CONTROL
IGNITION_CONTROL
1
R0614
10K
1K
3
C0641
0.1uF
VR0641
5.1V
e
t
EMERGENCY_CONTROL
R0642
10K
R0615
10K
10K
Q0612
2
D0611
C0611
47uF
R0616
10K
C0612
0.1uF
0102725B36
Supply Voltage
GEPD5449-1
UHF Supply Voltage Schematic Diagram
5-21
UHF Main Board - Supply Voltage
UHF Main Board Supply Voltage
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113741F17
470pF 50V
R0612
0662057C87
3300 5 1/8
C0602
2109720D14
100nF LOW DIST
R0613
0662057C87
3300 5 1/8
C0603
2380090M24
LYT 10uF 50V 20%
R0614
0662057A73
10k 1/16W 5%
C0604
2311049A97
33uF 20% 16V
R0615
0662057A73
C0605
2109720D14
100nF LOW DIST
R0616
0662057A73
C0611
2311049A99
R0617
0662057C87
3300 5 1/8
C0612
2113743K15
100nF 16V
R0621
0662057A57
2k2 1/16W 5%
C0613
2113741F17
470pF 50V
R0631
0662057A01
10 1/16W 5%
C0621
2113741F17
470pF 50V
R0632
0662057A01
10 1/16W 5%
C0622
2311049A99
R0641
0662057A84
30k 1/16W 5%
C0631
2109720D14
100nF LOW DIST
R0642
0662057A73
10k 1/16W 5%
C0632
2311049A97
33uF 20% 16V
U0601
5105625U25
9.3V REG 2941
C0633
2113743E07
22nF 16V
U0631
5105469E65
VLTG REGLTR LP2951C
C0634
2311049A99
47uF 20% 10V
VR0621
4880140L06
5.1V 5% 225mW
C0635
2109720D14
100nF LOW DIST
VR0641
4880140L06
5.1V 5% 225mW
C0641
2113743K15
100nF 16V
D0611
4813833C02
DUAL SOT MMBD6100
D0621
4813833C02
DUAL SOT MMBD6100
D0631
4813833C02
DUAL SOT MMBD6100
ne
10k 1/16W 5%
.m
yr
ad
io
8.
10k 1/16W 5%
ht
tp
://
w
w
w
t
C0601
16
Circuit
Ref
Q0601
4880214G02
NPN 40V
Q0611
4805128M27
PNP SOT89
Q0612
4880214G02
NPN 40V
R0601
0662057A73
10k 1/16W 5%
R0602
0660076E70
FILM 7500
R0603
0660076E51
FILM 1200
R0604
0662057A49
1k 1/16W 5%
R0605
0662057A69
6k8 1/16W 5%
R0606
0662057B47
0 1/16W
R0611
0662057A51
1k2 1/16W 5%
5-23
ht
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yr
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8.
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UHF Main Board - Supply Voltage
5-24
UHF Power Control Schematic Diagram
(CNTL)
VAG
VAG_7
C0711
R0712
R0702
330
39000pF
47K
PWR_DETECT_7
(PA)
R0701
6
PWR_DETECT
68K
5
C0701
100pF
U0701-2
MC3403
R0704
7
9
68K
R0711
C0702
100pF
10
22K
PWR_CNTL_7
8
U0701-4
PWR_CNTL
(PA)
C0713
100pF
MC3403
9V3
C0712
R0714
Q0711
22K
3
C0723
100pF
C0722
100pF
R0722
PA_TEMP
U0701-1
100K
MC3403
VLTG_LIMIT
(CNTL)
d
i
o
6
DAC_CE
SPI_DATA_SRC_7
1
SPI_DATA_SRC
1
6
8
.
n
PA_ENABLE
R0715
22K
3
9V3
16
PA_PWR_SET VDD
10
CLK
PA_ENABLE_7
R0719
68K
D0732
R0731
22K
2
1
U0731
DAC_CE_7
EN
2
Q1
4
Q2
11
Q3
13
Q4
3
R1
5
R2
12
R3
14
R4
D_IN
8
NC
9
NC1
MC144111
BIAS_VLTG_7
R0733
BIAS_VLTG
47K
(PA)
C0732
100pF
D0731
1
R0732
4.7K
3
2
D_OUT 15
GND
7
C0733
.220uF
FE_CNTL_VLTG_7
R0735
FE_CNTL_VLTG
47K
0
(FE)
Q0731
e
t
R0734
47.5K
47K
9V3
C0703
SW_B+_7
(SV)
VLTG_LIMIT_7
0.1uF
47K
SPI_CLCK_SRC
(CNTL)
1
C0731
R0723
SPI_CLCK_SRC_7
(CNTL)
R0724
2
C0721
100pF
(CNTL)
1
.m
y
r
a
2
3
22K
(CNTL)
R0718
68K
C0716
3300pF
w
D0721
PA_TEMP_7
13
.100uF
w
R0725
10K
(PA)
12
C0714
9V3
R0721
10K
U0701-3
:/
/
w
9V3_7
9V3
14
R0717
33K
R0716
560K
MC3403
R0713
3.3K
VAG
(SV)
h
tt p
43pF
R0703
10K
Q0742
SW_B+
4
VCC
U0701-5
K9V1_7
K9V1
0.1uF
R0742
1K
PWR_GND
GND
11
R0741
(PA)
C0741
100pF
0102725B24
UHF PWR CNTL
1K
K9V1_ENABLE_7
(CNTL)
47K
K9V1_ENABLE
Q0741
47K
GEPD 5403-1
UHF Power Control Schematic Diagram
5-25
UHF Main Board - Power Control
UHF Main Board Power Control
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F51
100pF 5% 50V
R0712
0662057A37
330 1/16W 5%
C0702
2113740F51
100pF 5% 50V
R0713
0662057A61
3k3 1/16W 5%
C0703
2113743K15
100nF 16V
R0714
0662057A81
22k 1/16W 5%
C0711
2113741A59
CL2
R0715
0662057A81
C0712
2113740F42
43pF 5% 50V
R0716
0662057B16
C0713
2113740F51
100pF 5% 50V
R0717
0662057A85
33k 1/16W 5%
C0714
2113743A19
100nF 16V
R0718
0662057A93
68k 1/16W 5%
C0716
2113741A33
3.3nF
R0719
0662057A93
68k 1/16W 5%
C0721
2113740F51
100pF 5% 50V
R0721
0662057A73
10k 1/16W 5%
C0722
2113740F51
100pF 5% 50V
R0722
0662057A81
22k 1/16W 5%
C0723
2113740F51
100pF 5% 50V
R0723
0662057A89
47k 1/16W 5%
C0731
2113743K15
100nF 16V Y5V
R0724
0662057A97
100k 1/16W
C0732
2113740F51
100pF 5% 50V
R0725
0662057A73
10k 1/16W 5%
C0733
2113743A23
220nF 16V
R0731
0662057A81
22k 1/16W 5%
C0741
2113740F51
100pF 5% 50V
R0732
0662057A65
4k7 1/16W 5%
D0721
4813833C02
DIODE DUAL SOT
MMBD6100
R0733
0662057A89
47k 1/16W 5%
R0734
0662057R92
47.5k .1W 1%
D0731
4813833C02
DIODE DUAL SOT
MMBD6100
R0735
0662057C01
0 1/10W 5%
D0732
4813833C02
DIODE DUAL SOT
MMBD6100
R0741
0662057A49
1k 1/16W 5%
R0742
0662057A49
1k 1/16W 5%
U0701
5183222M49
IC QUAD OPAMP
__3403_
U0731
5113811G02
IC D/A CONV & BIT 4
CHAN
4880214G02
TSTR NPN 40V .2A
Q0731
4880048M01
Q0741
4880048M01
Q0742
4805128M27
TSTR PNP SOT89
BSR33
R0701
0662057A93
68k 1/16W 5%
R0702
0662057A89
47k 1/16W 5%
R0703
0662057A73
10k 1/16W 5%
R0704
0662057A93
68k 1/16W 5%
R0711
0662057A81
22k 1/16W 5%
ne
22k 1/16W 5%
560k 1/16W 5%
8.
io
.m
yr
ad
w
://
w
w
ht
tp
Q0711
t
C0701
16
Circuit
Ref
5-27
t
ne
8.
16
io
.m
yr
ad
w
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w
w
ht
tp
5-28
UHF Power AmpliÞer 5-25W Schematic Diagram
A+
L5600
FLT_A+_1
1
J5601
2
FLT_A+
L5601
D5601
C5601
10uF
C5600
330pF
C5604
10uF
C5531
C5548
.01uF
BIAS_VLTG_1
.01uF
L5532
TP5201
R5623
R5624
C5622
4.7
4.7
.01uF
C5530
C5532
K9V1
C5621
.001uF
C5611
.01uF
R5622
10K
NU
C5623
C5619
100pF
C5503
EXCITER_PA
27pF
R5501
4.7
R5525
.01uF
R5502
68
R5613
1K
EXCITER_PA_1
C5502
L5501
7.66nH
Q5510
MRF
6
7
10
2
3
C5512 1.5mmx2mm
R5512
C5501
10pF
5
8
C5511
4.7pF
NU
2
4
C5513
20pF
R5614
51
TP5203
C5642
.001uF
R5641
100K
1
6
8
.
n
PA_TEMP
R5616
10
e
t
0102725B23
PA ASSEMBLY
GLN7309A
HARDWARE KIT
Q5530
MRF5015
5mmx3mm
PART OF
HARDWARE KIT
C5535
1.5mmx2mm
C5542
36pF
1mmx3mm
30pF
C5534
30pF
R5526
C5536
27pF
L5533
13.85nH
L5541
18nH
C5543
27pF
C5544
13pF
D5553
Q5540
C5537
27pF MRF650
C5558
5.1pF
PART OF
HARDWARE KIT
R5553
120
R5552
51
TP5204
R5527
PWR_DETECT_1
L5534
4.7
C5616
330pF
DIRECTIONAL COUPLER
1.5mmx25mm
4.7
C5522
43pF
L5611
PA_TEMP_1
1.5mmx2mm
27pF
3
d
i
o
22nH
1
4
Q5520
MRF557 1
10
18pF
L5503
C5521
100pF
C5541
36pF
C5533
36pF
4.7
R5511
L5542
C5547
w
C5612
.01uF
C5523
.01uF
R5523
47K
NU
.m
y
r
a
R5612
2K
R5513
2.2K
w
C5614
.001uF
NU
10K
PWR_CNTL
1K
1K
C5613
.01uF
NU
Q5612
R5522
R5521
100pF
Q5621
TP5202
R5611
.1uF
R5541
10
:/
/
w
R5621
680
PWR_CNTL_1
100pF
Q5611
h
tt p
BIAS_VLTG
K9V1_1
C5603
.001uF
C5602
100pF
A+
PWR_DETECT
R5531
10
C5556
.001uF
R5551
10K
C5617
330pF
L5554
120nH
C5618
.1uF
D5551
C5559
.001uF
HARMONIC FILTER
C5551
100pF
L5551
18nH
R5617
10
C5557
8.2pF
NU
L5552
L5553
18nH
18nH
C5552
9.1pF
C5553
12pF
J5501
C5554
6.8pF
2
R5550
10K
3
C5555
160pF
A+
R5615
L5631
4,7K
470nH
C5634
D5631
PA_RX_1
PA_RX
GEPD 5404-1
o
C5615
.001uF
C5631
.001uF
100pF
C5632
68pF
C5633
3.3pF
UHF Power AmpliÞer 5-25W Schematic Diagram
5-29
UHF Main Board - Power AmpliÞer 5-25W
UHF Main Board Power AmpliÞer 5-25W
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F27
10pF 5% 50V
C5559
2113741F25
1nF 50V
C5502
2113741F49
10nF 50V X7R
C5600
2113740A67
330pF 5% 50V
C5503
2113740F37
27pF 5% 50V
C5602
2113740F51
100pF 5% 50V
C5512
2113740F33
18pF 5% 50V
C5603
2113741F25
C5513
2113740F34
20pF 5% 50V
C5604
2311049A45
C5521
2113740A39
27pF 5% 50V
C5611
2113741F49
10nF 50V
C5522
2113740A44
43pF 5% 50V
C5612
2113741F49
10nF 50V
C5523
2113741F49
10nF 50V
C5615
2113741F25
1nF 50V
C5530
2311049A01
C5616
2113740A67
330pF 5% 50V
C5531
2113741F49
10nF 50V
C5532
2113740F51
C5533
ne
t
C5501
16
Circuit
Ref
1nF 50V
2113740A67
330pF 5% 50V
100pF 5% 50V
C5618
2311049A01
2111078B31
HQ 36pF 5%
C5619
2113740F51
100pF 5% 50V
C5534
2111078B27
HQ 30pF 5%
C5621
2113741F25
1nF 50V
C5535
2111078B27
HQ 30pF 5%
C5622
2113741F49
10nF 50V
C5536
2111078B25
HQ 27pF 5%
C5623
2113740F51
100pF 5% 50V
C5537
2111078B25
HQ 27pF 5%
C5631
2113741F25
1nF 50V X7R
C5541
2111078B31
HQ 36pF 5%
C5632
2111078B38
HQ 68pF 5%
C5542
2111078B31
HQ 36pF 5%
C5633
2113740F15
3.3pF 5% 50V
C5543
2111078B25
HQ 27pF 5%
C5634
2113740F51
100pF 5% 50V
://
w
w
w
C5617
ht
tp
.m
yr
ad
io
8.
C5544
2111078B16
HQ 13pF 5%
C5642
2113741F25
1nF 50V
C5547
2111078B42
HQ 100pF 5%
D5551
4802482J02
DIODE PIN MA/COM
C5548
2113741F49
10nF 50V
D5553
4813825A05
DIODE CHIP SCHOTTKY
C5551
2111078B42
HQ 100pF
D5601
4813832B35
DIODE TRANSORB
C5552
2111078B12
HQ 9.1pF 5%
D5631
4802482J02
DIODE PIN MA/COM
C5553
2111078B15
HQ 12pF 5%
L5501
2460591A11
Square Coil 7.66nH 3T
C5554
2111078B09
HQ 6.8pF 5%
L5503
2462587T38
Coil Chip 22nH 5%
C5555
2111078B48
HQ 160pF 5%
L5532
2484657R01
Ferrite Bead
C5556
2113741F25
1nF 50V
L5533
2460591C23
Square Coil 16nH 3T
C5558
2113740F20
5.1pF 5% 50V
L5534
2484657R01
Ferrite Bead
5-31
UHF Main Board - Power AmpliÞer 5-25W
Circuit
Ref
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
2460591X01
Coil Square
R5611
0662057A73
10k 1/16W 5%
L5542
2484657R01
Ferrite Bead
R5612
0662057A56
2k 1/16W 5%
L5551
2460591X01
Coil Square
R5613
0662057A49
1k 1/16W 5%
L5552
2460591X01
Coil Square
R5614
0662057A18
51 1/16W 5%
L5553
2460591X01
Coil Square
R5615
0662057A65
4k7 1/16W 5%
L5554
2462587T16
Coil Chip 120nH
R5616
0680194M01
10 1W 5%
L5600
2484657R01
Ferrite Bead
R5617
0680194M01
10 1W 5%
L5601
2484657R01
Ferrite Bead
R5621
0662057A45
680 OHMS 5%
L5611
2484657R01
Ferrite Bead
R5623
0662057C19
L5631
2462587T23
Coil Chip 470nH
R5624
0662057C19
Q5510
4813827A26
RF NPN MRF
R5641
0680149M02
Q5520
4813827D13
TSTR 870MHz PWR
MACRO-X
Q5611
4813824A17
TSTR PNP 40V 0.2A
Q5612
4880214G02
NPN 40V .2A
Q5621
4813824A17
TSTR PNP 40V 0.2A
R5501
0662057C19
4R7 1/10W 5%
R5502
0662057A21
68 1/16W 5%
R5511
0662057A01
10 1/16W 5%
R5512
0662057A01
10 1/16W 5%
R5513
0662057A57
R5521
0662057A49
R5522
0662057A49
R5523
0662057A89
ne
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Thermistor Chip
100K @25C
1k 1/16W 5%
1k 1/16W 5%
47k 1/16W 5%
4R7 1/10W 5%
0662057C19
4R7 1/10W 5%
R5527
0662057C19
4R7 1/10W 5%
R5531
0680194M01
10 1W 5%
R5541
0680194M01
10 1W 5%
R5550
0662057A73
10k 1/16W 5%
R5551
0662057A73
10k 1/16W 5%
R5552
0662057A18
51 1/16W 5%
R5553
0683962T51
120 1W 5%
5-32
4R7 1/10W 5%
2k2 1/16W 5%
0662057C19
R5526
4R7 1/10W 5%
ht
tp
R5525
t
L5541
UHF Synthesizer Schematic Diagram
h
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d
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UHF Synthesizer Schematic Diagram
5-33
UHF Main Board - Synthesizer
UHF Main Board Synthesizer
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113743K15
100nF 16V Y5V
R5702
0662057C61
270 1/16W 5%
C5701
2113740F51
100pF 5% 50V
R5703
0662057A49
1k 1/16W 5%
C5702
2113741F13
330pF 50V
R5705
0662057A89
47k 1/16W 5%
C5703
2113743K15
100nF 16V
R5708
0662057A01
C5704
2113741F49
10nF 50V
R5710
0662057B47
C5706
2113741F49
10nF 50V
R5711
0662057A15
39 1/16W 5%
C5707
2113741F49
10nF 50V
R5712
0662057A59
2k7 1/16W 5%
C5709
2113743K15
100nF 16V
R5713
0662057A59
2k7 1/16W 5% (12.5kHz)
C5711
2311049A63
R5714
0662057B02
150k 1/16W
C5712
2311049J26
R5715
0662057A41
470 1/16W 5%
C5713
2113741F25
1nF 50V
R5716
0662057A47
820 1/16W 5%
C5714
2113741F49
10nF 50V
R5717
0662057A15
39 1/16W 5%
C5715
2113740F39
33pF 5% 50V
R5718
0662057B16
560k 1/16W 5%
C5716
2113743K15
100nF 16V
R5723
0662057A73
10k 1/16W 5%
C5717
2113743K15
100nF 16V
R5724
0662057B16
560k 1/16W 5%
C5718
2113743K15
100nF 16V
U5701
5105457W72
C5719
2311049A19
CC QFP CONT
5105191W59 FRAC-N
C5720
2113741F49
10nF 50V
VR5701
4813830A23
DIODE 10V 5% 20mA
350mW
C5721
2113741F49
10nF 50V
Y5702
4809863M01
REF OSC 16.8 MHZ
TEMPUS
2311049A07
TANT CP 1uF 10% 16V
C5723
2109720D14
CER LOW DIST 100nF
C5725
2109720D14
CER LOW DIST 100nF
C5726
2113741F49
10nF 50V
C5727
0811051A19
MTLZ POLY 1uF 5%
D5701
4802233J09
DIODE TRIPLE SOT143RH
E5701
2605915V01
SHLD PCB MOUNT 1
R5700
0662057B47
0 1/16W 5%
R5701
0662057C61
270 1/16W 5%
ne
10 1/16W 5%
0 1/16W (not used)
8.
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C5722
t
C5700
16
Circuit
Ref
5-35
ht
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8.
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UHF Main Board - Synthesizer
5-36
UHF Voltage Controlled Oscillator Schematic Diagram
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UHF Voltage Controlled Oscillator Schematic Diagram
5-37
UHF Main Board - Voltage Controlled Oscillator
UHF Main Board Voltage Controlled Oscillator
Description
Circuit
Ref
Motorola
Part No.
Description
2113741F25
1nF 50V
C5783
2113740F21
5.6pF 5% 50V
C5732
2113740F37
27pF 5% 50V
C5784
2113740F35
22pF 5% 50V
C5733
2113741F49
10nF 50V
C5785
2113741F49
10nF 50V
C5734
2113740F11
2.2pF 5% 50V
C5786
2113740F18
C5741
2113741A45
10nF 50V
C5787
2113741F49
C5742
2113740F41
39pF 5% 50V
C5791
2113740F51
100pF 5% 50V
C5743
2113740F39
33pF 5% 50V
C5792
2113741F25
1nF 50V
C5745
2113740F41
39pF 5% 50V
C5801
2113743A23
220nF 16V
C5746
2113740F29
12pF 5% 50V
C5802
2113743E07
22nF 16V
C5747
2113740F29
12pF 5% 50V
C5748
2113740F45
56pF 5% 50V
C5749
2113741F25
1nF 50V
C5750
2113741F25
1nF 50V
C5751
2113741F13
330pF 50V
C5752
2113740F17
3.9pF 5% 50V
C5753
2113740F25
8.2pF 5% 50V
C5754
2113740F25
8.2pF 5% 50V
C5756
2113740F25
8.2pF 5% 50V
C5759
2113740F41
39pF 5% 50V
0662057A09
22 1/16W 5%
C5761
2113743K15
100nF 16V Y5V
C5762
2113741F49
10nF 50V
C5763
2113740F21
5.6pF 5% 50V
C5771
2113740F51
100pF 5% 50V
C5772
2113741F13
330pF 50V
C5773
2113740F19
4.7pF 5% 50V
C5774
2113741F49
10nF 50V
C5781
2113740F51
100pF 5% 50V
C5782
2113740F45
56pF 5% 50V
ne
4.3pF 5%
10nF 50V
8.
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C5760
t
C5731
16
Motorola
Part No.
ht
tp
Circuit
Ref
C5803
2311049A63
D5731
4805649Q13
DIODE VCTR 1SV228
SOT23
D5741
4805649Q13
DIODE VCTR 1SV228
SOT23
D5742
4805649Q13
DIODE VCTR 1SV228
SOT23
D5743
4813825A05
DIODE CHIP SCHOTTKY
D5751
4805218N57
DIODE DUAL SCHOTTKY SOT23
E5731
2605915V01
SHLD PCB MOUNT 1
E5732
2602641Y02
SHIELD VCO
L5731
2462587T38
COIL CHIP 22nH 5%
L5741
2462587T18
COIL CHIP 180nH
L5742
2462587T16
COIL CHIP 120nH
L5743
2402686Y01
COIL HEL MOLDED SMD
L5744
2462587T20
COIL CHIP 270nH
L5754
2462587T38
COIL CHIP 22nH 5%
L5771
2462587T38
COIL CHIP 22nH 5%
L5781
2462587T38
COIL CHIP 22nH 5%
Q5731
4805921T09
XSTR DUAL ROHM
FMG8
5-39
UHF Main Board - Voltage Controlled Oscillator
Circuit
Ref
4813823A05
TSTR N-CH RF JFET
MMBU310LT1
Q5751
4813827A07
TRANSISTOR NPN
Q5771
4813827A07
TRANSISTOR NPN
Q5781
4813827A07
TRANSISTOR NPN
Q5791
4813827A07
TRANSISTOR NPN
R5732
0662057A97
100k 1/16W
R5733
0662057A89
47k 1/16W 5%
R5741
0662057A25
100 1/16W 5%
R5742
0662057A97
100k 1/16W
R5743
0662057A13
33 1/16W 5%
R5744
0662057A13
33 1/16W 5%
R5751
0662057A45
680 OHMS 5%
R5752
0662057A41
470 1/16W 5%
R5753
0662057C61
270 1/16W 5%
R5754
0662057A53
1k5 1/16W 5%
R5755
0662057A41
470 1/16W 5%
R5756
0662057A29
150 1/16W 5%
R5771
0662057A61
3k3 1/16W 5%
R5772
0662057A61
3k3 1/16W 5%
R5773
0662057A73
R5774
0662057A73
R5775
0662057A25
R5776
0662057A29
10 1/16W 5%
R5789
0662057A13
33 1/16W 5%
R5791
0662057A41
470 1/16W
R5792
0662057A18
51 1/16W 5%
R5793
0662057A41
470 1/16W
R5794
0662057A59
2k7 1/16W
R5801
0662057A09
22 1/16W 5%
T5751
2505515V03
XFMR JEDI MIXER SMD
4:1
U5801
5105469E65
IC VLTG REGLTR
LP2951C
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10k 1/16W 5%
100 1/16W 5%
150 1/16W 5%
33 1/16W 5%
0662057A29
150 1/16W 5%
R5779
0662057A01
10 1/16W 5%
R5782
0662057A13
33 1/16W 5%
R5783
0662057A29
150 1/16W
R5784
0662057A73
10k 1/16W
R5785
0662057A73
10k 1/16W
R5786
0662057A25
100 1/16W
R5787
0662057A29
150 1/16W
5-40
0662057A01
10k 1/16W 5%
0662057A13
R5778
R5788
ht
tp
R5777
Description
16
Q5741
Motorola
Part No.
t
Description
ne
Motorola
Part No.
8.
Circuit
Ref
UHF RX-FE Schematic Diagram
9V3_2
R5302
9V3
330
R5401
3
PA_RX
D5301
L5408
C5322
.01uF
NU
33pF
3
D5302
R5313
10K
NU
1
C5300
43pF
R5301
100K
C5304
43pF
R5307
68
R5303
2.7K
R5319
Q5301
2
.001uF
C5314
1.8pF
12pF
D5304
D5305
C5321
36pF
R5309
100K
C5315
36pF
3
C5316
36pF
w
C5319
.001uF
VCO_MIXER_2
VCO_MIXER
d
i
o
5V_STAB_2_IN
5V_STAB
E5301
NU
NU
R5316
470
NU
R5314
270
T5402
T5401
5
1
4
3
2
C5318
10pF
C5317
36pF
C5401
6.2pF
L5403
L5404
27nH
15nH
C5402
16pF
C5403
16pF
R5315
10
5V_STAB_2_OUT
5V_STA
IF_4
e
t
E5202
C5329
1.8pF
D5401
R5310
10
1
6
8
.
n
FRONT END
C5320
.001uF
C5404
82pF
L5409
C5328
1.8pF
C5325
3.9pF
.m
y
r
a
FE_CNTL_VLTG_2
GEPD 5407
o
3
C5324
36pF
FE_CNTL_VLTG
0102725B28
C5312
33
R5304
3.9K
C5306
36pF
C5305
43pF
C5313
w
C5323
36pF
L5407
100pF
10K
C5308
.001uF
C5327
1.8pF
R5308
270
:/
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C5326
1.8pF
R5306
270
R5305
3 D5303
C5301
2.2pF
C5309
L5402
150nH
4
1.8pF
PA_RX_2
C5303
R5318
150
h
tt p
C5302
L5406
51
R5317
150
L5302
470nH
5
Q5302
NU
R5312
4.7K
NU
TP5302
3
R5311
4.7K
NU
9V3
RX_IF
470nH
2
9V3_2_3
C5311
.0033uF
RX_IF_2
L5401
TP5301
C5310
330pF
C5307
.0033uF
1
C5331
330pF
DUMMY
UHF RX-FE Schematic Diagram
5-41
UHF Main Board - RX-FE
UHF Main Board RX-FE
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F42
43pF 5% 50V
C5331
2113741F13
330pF 50V
C5301
2113740F11
2.2pF 5% 50V
C5401
2113740F22
6.2pF 5% 50V
C5302
2113740F09
1.8pF 5% 50V
C5402
2113740F32
16pF 5% 50V
C5303
2113740F39
33pF 5% 50V
C5403
2113740F32
C5304
2113740F42
43pF 5% 50V
C5404
2113740F49
C5305
2113740F42
43pF 5% 50V
D5301
4862824C01
VARACTOR CHIP
C5306
2113740F40
36pF 5% 50V
D5302
4862824C01
VARACTOR CHIP
C5307
2113741F37
3.3nF 50V
D5303
4880154K03
DUAL SCHOTTKY SOT23
C5308
2113741F25
1nF 50V
D5304
4862824C01
DIODE VARACTOR
C5309
2113740F51
100pF 5% 50V
D5305
4862824C01
DIODE VARACTOR
C5310
2113741F13
330pF 50V
D5401
4880174R01
QUAD SOIC 8 PIN
C5311
2113741F37
3.3nF 50V
L5302
2462587T23
COIL CHIP 470nH
C5312
2113741F25
1nF 50V
L5401
2462587T23
COIL CHIP 470nH
C5313
2113740F09
1.8pF 5% 50V
L5402
2462587T17
COIL CHIP 150nH
C5314
2113740F29
12pF 5% 50V
L5403
2462587N46
IND CHIP LO-PRO 27.0 N
C5315
2113740F40
36pF 5% 50V
L5404
2462587N43
IND CHIP LO-PRO 15.0 N
C5316
2113740F40
36pF 5% 50V
Q5301
4813827A07
TRANSISTOR NPN
C5317
2113740F40
36pF 5% 50V
R5301
0662057A97
100k 1/16W
C5318
2113740F27
10pF 5% 50V
R5302
0662057A37
330 1/16W 5%
ne
16pF 5% 50V
82pF 5% 50V
8.
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C5300
16
Circuit
Ref
C5319
2113741F25
1nF 50V
R5303
0662057A59
2k7 1/16W 5%
C5320
2113741F25
1nF 50V
R5304
0662057A63
3k9 1/16W 5%
C5321
2113740F40
36pF 5% 50V
R5305
0662057A73
10k 1/16W 5%
C5323
2113740F40
36pF 5% 50V
R5306
0662057C61
270 1/16W 5%
C5324
2113740F40
36pF 5% 50V
R5307
0662057A21
68 1/16W 5%
C5325
2113740F17
3.9pF 5% 50V
R5308
0662057C61
270 1/16W 5%
C5326
2113740F09
1.8pF 5% 50V
R5309
0662057A97
100k 1/16W
C5327
2113740F09
1.8pF 5% 50V
R5310
0662057A01
10 1/16W 5%
C5328
2113740F09
1.8pF 5% 50V
R5314
0662057C61
270 1/16W 5%
C5329
2113740F09
1.8pF 5% 50V
R5315
0680194M01
10 1W 5%
5-43
UHF Main Board - RX-FE
Circuit
Ref
Motorola
Part No.
Description
0662057A29
150 1/16W 5%
R5318
0662057A29
150 1/16W 5%
R5319
0662057A13
33 1/16W 5%
R5401
0662057A18
51 1/16W 5%
T5401
2505515V03
XFMR JEDI MIXER SMD
4:1
T5402
2505515V04
XMFR MIXER 5:1
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R5317
5-44
UHF RX-IF Schematic Diagram
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8
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UHF RX-IF Schematic Diagram
5-45
UHF Main Board - RX-IF
UHF Main Board RX-IF
Circuit
Ref
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F35
22pF 5% 50V
C5237
2113743K15
100nF 16V
C5201
2113740F19
4.7pF 5% 50V
C5238
2113743K15
100nF 16V Y5V
C5202
2113740F31
15pF 5% 50V
C5239
2113740F44
51pF 5% 50V
C5203
2113743A19
100nF 16V X7R
D5201
4880154K03
C5204
2113743A19
100nF 16V X7R
FL5201
9180098D04
C5205
2113740F33
18pF 5% 50V
C5208
2113743A19
100nF 16V
C5211
2113740F31
15pF 5% 50V
C5212
2113740F31
15pF 5% 50V
C5213
2113740F40
36pF 5% 50V
C5214
2113740F17
3.9pF 5% 50V
C5220
2113741F49
10nF 50V
C5221
2311049J25
C5222
2113743K15
100nF 16V
C5223
2113743E20
100nF 16V
C5224
2113741F29
1.5nF 50V
C5225
2311049J11
C5226
2113743K07
2113743K15
47nF 16V (12.5kHz)
100 nF 16V (20/25kHz)
C5227
2311049J11
C5228
ne
Dual Schottky SOT23
Filter CER 4-EL 455kHz
(12.5kHz)
Filter CER 3WR
(20/25kHz)
8.
16
9180098D06
9180097D04
io
FL5202
t
C5200
.m
yr
ad
9180097D06
(12.5kHz)
Filter CER 6-EL
(20/25kHz)
2462587N69
CHIP IND 1200 NH
L5203
2483411T74
Inductor Chip Shielded
L5211
2483411T74
Q5201
4813827A07
Transistor NPN
R5201
0662057A73
10k 1/16W 5%
R5202
0662057A85
33k 1/16W 5%
R5203
0662057A69
6k8 1/16W 5%
R5204
0662057A25
100 1/16W 5%
R5205
0662057A56
2k 1/16W 5%
R5207
0662057B47
0 1/16W
2113743K15
100nF 16V
R5211
0662057A47
820 1/16W 5%
C5229
2113741F41
2113741F25
4.7nF 50V (12.5kHz)
1nF 50V (20/25kHz)
R5212
0662057A67
5k6 1/16W 5%
R5216
C5230
2113741F49
10nF 50V
0662057A73
0662057A69
10k 1/16W 5% (12.5kHz)
6k8 1/16W 5% (20/25kHz)
C5231
2311049A07
TANT CP 1uF 10% 16V
R5221
0662057B02
0662057B05
C5232
2113740F51
100pF 5% 50V
150k 1/16W (12.5kHz)
200k 1/16W 5%
(20/25kHz)
C5233
2113740F51
100pF 5% 50V
R5222
0662057A93
68k 1/16W 5%
C5234
2113743K15
100nF 16V
R5223
C5235
2113740F51
100pF 5% 50V
0662057A69
0662057A63
6k8 1/16W 5% (12.5kHz)
3k9 1/16W 5% (20/25kHz)
C5236
2113740F51
100pF 5% 50V
R5224
0662057A76
13k 1/16W 5%
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L5201
5-47
UHF Main Board - RX-IF
Motorola
Part No.
Description
R5225
0662057A25
0662057A61
100 1/16W 5% (12.5kHz)
3k3 1/16W 5% (20/25kHz)
U5201
5180207R01
IF IC
Y5201
9102651Y01
XTAL FLTR 45.1MHZ
12.5KHz 80dB
XTAL FLTR 45.1MHZ
20/25KHz 80dB
9102651Y02
9102652Y02
4802653Y01
XTAL OSC 44.645MHZ
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w
.m
yr
ad
io
16
Y5211
XTAL FLTR 45.1MHZ
12.5KHz 60dB
XTAL FLTR 45.1MHZ
20/25KHz 80dB
t
Y5202
ne
9102652Y01
8.
Circuit
Ref
5-48
VHF Main Board Component Side
C0137
R0102
20
21
12
R0114
7
8
L5211
D3301
E3301
C3302
R3303
R3313 C3308
C3301
R3304 D3303
C3652
C3651
L3652
L3651
D3551
C3632
C3622
C3304
C3305
C3306
C3313
C3311
R3315 R3314
5
R3307
C3314
C3334
C3309
2
C3321
Y5211
C3319
R3301
Q3301
6
4
D3304
L3332
L3302 R3305
1
4
R3308
1
2
R3302 C3310
R3331
T3301
R3321
C3307
R3309
R3306
3
L3331
4
2
3
1
C3312
5
3
2
C3315
C3316
C3317
7
8
R5211
C5211
C3318
9
10
h
t
t
11
12
L3333
13
D3331
1
3
2
1
C3320
C33311
Q3760
D3651
C3623
C3534
R3525
R3615
L3533
C3553
C3551
C3552
C3513
L3641
R3513
L3552
R3526
C3520
R3511
C3533
C3555
L3551
C3554
C3514
L3532
SH3501
C3521
R3527
C3532
1
C3531
3
C3523
J3601
C3653
C3654
C3527
C3522
VR0431
R0446
C0422
R0422 C0412C0446 C0431 C0406
16 14
15
VR0420
Y5202
L5201
3
5
2
C3332 8
C3764
1
L3531
C3530
C3524
R0454
C0405
VR0464
VR0411
R0432
e
t
VR0422
C0464
C0455
R0425
R0431
Q0431
R0423
VR0445 C0445
R0427
R0426
VR0454
Q0421
p
:
C3602
L3334
C3646
L3761
C3645
// w
Q3642 C3511
R3648
R3766 C3765
C3644
C3512
R3769
C3766
R3646
L3511
4
1
U0401
C3755
Q3511
Y5201
L3631
R3502
1
6
8
.
n
R3645
5
R3761
C3761
R3753
C3757
8
C3642
w
R3644
R3763
C3763
C5212
T3302
1
FL5201
R5212 C5213
4
C3333 5
R3762
C3756 C3758
R3751
L3621 L3622
d
i
o
R3643
C3501
C3502
R3647
9
C3643
5
Q3641
C5214
C3762
R3754
C3621
R3501
R3503
R3649
R3752
R3743
Q3643
C0402
1
L3501
C0401
R3641
R0406
R0401
R0402
R3642
R0407
C0419 C0420 C0407
C3641
L0402
L0401
C0404
Q3751 D3754
R0151
C3754
R3767
R3765
L3754
w
U0601
D0732
R0404
R0405
Q0401
C0403
D3752 D3751
L3750
C0713
C0732
C0185
R0733
R0152
R0731
L3741 Q3752
R3741 C3740
C3745 C3744
L3752
1
R0715
R0189
R0732
C0731
C0151
Q3742
R3739
C3752
16
14
R0621
L3731
R3731
R3742
2 1
C0701
Q0742 C0721
R0153
8
D3739 U3741
D3731 C3731
C3733
L3732
.m
y
r
a
U0106
C0632
C3734
C0133
L3733
R0742
3 2 1
U0731
C3737 C3739
C3736 C3738
1
C3735
D3732
L3734
C0635
R0721
C0742
R0741
R0136
3
R3801
C3704
D3733
Q0741
5 4
C5235
4
C3706
E3731
L3751
8
VR0621
9
1
1
C3701
R3709
Q0601
D0621 R0601
D0731
Q0731
R0719
R0145 R0146 R0142
R0144 R0141
7
C0156
R0604
C0191
R0135
1
U0631
C0633
R0605
8
5
C0641
C0621
R0143 C0142
R0156
C0622
C0182
C0141
C0155
R0155
R0154 C0172
C0154
C3724
C0634
4
FL5202
U3801
R0616
R0188
8
5
8
R0183 C0131
R0186
R0184
C0184
U0108
14
8
R0187
C0132
U0105
R0101
U0107
R0185 1
1
4
1
7
R0191
R0121 R0124
R0122 C0122
R0123 C0121
R0120
R0172
R0165
R0162
R0164 C0161
C0171
C0164 R0161
R5221
C3802
D3702
C3709
R3701 C3713
8
9
5
5
C3803
1
16
8
Y3702
R3705
U0102
R0130
4
C5226
C3702 R3702
9
1
R0131
R0104
16
14
R3723
C3727
C0101
80
R0128
R0192
C0162
Q0161
R0163
C0163
61
R0171
C0181
1
60
C0110
R0103
C0194
D0101
U0104
Q0138
R0119
C0102
U0101
C3801
C3707
C0134
R0134
R0110
R0106
R0107
R0109
R0167 R0108
E3701
R3703
C3726 R3724
18
R0126
R0113
R0166
6
C0127
R0127
Q0114 40
41
C0114
1
C0126
C0125
R0125
C0115
J0101
C0105
Q0137
C0103
Y0114
C0116 C0117
C0118 R0116
R0138
R0137
R0105
C0104
R0115
L0114
J3501
2
C3525
J0400
VHF Main Board Component Side
PCB No. 8485669Z01
5-49
R0118
R0182
R0181
R0613
C0703
R0702 C0702
VR0641
R0712
U0701
R0175
C0712
14R0714
8
R0717
R0716
C0741
R0701
R0724
D0721
C0723
C0733
C0604
R0722
1
7
R0734
C0603
R0725
C0714
R0711
Q0711
R0713
C0439
R0718
R0439
J0102
R0474
R3614
C3657
L3522
R3611
C3611
1
2
Q0442
C3601
C3605
C3603
R0437
R0411
R0443
C3604
R0412R0414 C0414
Q0411
C0411
R0441
L3601
L3521
e
t
R3551
Q3531
R0442
3
R0475
C3614
R0464
C3633
C0441
D3657
Q0433
R0462
R0413
R0465
Q0462 R0463
C0413
Q0412
C0462
R0415
Q0441
R0472
R0473
R3658
D0471
C3631
Q0461
R0477
C0463
R3631
R0476
C3634
C0471
1
6
8
.
n
R3657
C3658
C0461
R0461
R0471
Q0471
d
i
o
C0438
R0100
R3651
C3655
C0435
R0435
R0438
R0436 Q0432
C0601 C0605
R0704
R3779
R3775
R3776
R3777
C3777
R3300
R0641
R0703
C0602
L0170
C0613
R0642
R0606
R0150
Q0612
C0711
C3780
R3786
R0603
R0631
R0602
R0735
C3783
R3782
C3782
R3318
D0631
C3751R3781
Q3780
C3300
C3303
R3793
Q3790
L3783 C3784
R3785
C3786C3785
C3792
R3778
C3781R3795
E3732
w
L3773
R3794C3793
C3767
R0632
w
C3791
Q3770 L3768
R3791R3792
C3774
C3775
R3317
C0631
C3790
R0147
C0146
5
C0170
1
D0611
Q0611
C5200
R0614
R0615
C0612
R0612
C0611
C3743
R0139
C0150
C0152
40
C0145
6
C0722
R0723
C3712
VR0118
C0119
C3711
R3714 R3715 C3725
R3772
C3772
C3773
R5201
C5201
L5202 C5202
R3740
R0617
C3722
L3742
R3717
.m
y
r
a
R3316
C3723
R3716
C3771
R3311
R3718
R0611
R3713
L3781
R5203
R5202
Q5201
R3768
C5206
C5205
L5203
R3712
Q3302
D3300
35
36
R0148
C0147
R0149
U0103
C0148
C0149
C0175
15
C0174
R3771
R3312
16
:/
/
w
R5207
C3322
R3710
C5225
C3719
C5207 R5204 C5204
R5205
C5208
D5201
C3703
R3708
C5203
C5228
C5222
12
D3701
E3703
C0196
C0157
J0103
C0176 R0173
25
26
C0198
16
C3708
C3710
R3704
C0153
h
tt p
5
C5223
9
C3715
C3716
C5221
17
L0194
C0199
17
8
L0195
R0111
C0112
R0157
R0117
C0716
Y3701
C5236
U5201
U3701
C3720
C5239
36
1
24
R3774
C5224
25
32
1
C0109
C0111
R0112
C3705
C5233
E3702
C0173
VR3701
23
C3718
R5216
C5227
30
C0197
C5238
R5222
C5237
R3711
C3721
C3717
R5224
C5234
C5232
C5220
C5231
R5223 C5230 C5229
R5225
VHF Main Board Solder Side
Q3521
VR0450
C0450
R0450
VR0421
R3616
D3601
C0421
1
2
VR0435
VR0471 R0455
R0456
VR0441 VR0444
R0451 C0454VR0419
C0444
C0442
C0451 C0436
R0444
C0472
15
16
VHF Main Board Solder Side
PCB No. 8405669Z01
5-51
VHF GM950i, Controller Schematic Diagram
MIC_PTT
R0116
J0102
1
2
3
4
5
6
7
8
ADAPT_5
VR0118
5.1V
GND
7
+5V
5
R0165
7
U0105-2
MC3403
47K
+5V
+5V
D0101
R0103
10K
2
100K
NU
.039uF
13
14
R0124
6.8K
C0122
200K
LED_CE
1
3 U0104-1
74AC08 2
200K
+5V
C0127
0.1uF
4
R0137
47K
R0138
4.7K
R0134
10K
9
R0135
47K
MIC_PTT
47K
Q0138
INT_SPKR+
47K
47K
LCD_CE
DAC_CE_5
DAC_CE
SPI_DATA_SRC_5
SPI_MOSI
SPI_CLCK_SRC_5
SPI_CLCK_SRC
PA_ENABLE_5
e
t
R0142
1K
R0128
10K
VLTG_LIMIT_5
R0143
.100uF
47K
22
7
8
40
36
2
RSSI_5
R0111
33K
RSSI
CSQ_DET
FAST_SQ_5
FAST_SQ
13
14
C0112
.001uF
R0151
10K
82K
U0106-4
10 MC3403
R0185 NU
30K
R0186
R0184
30K
0
NU
* note 1
C0182
0.1uF
GND
C0152
1uF
8
FLT_RX_AUDIO
R0187
VAG
AUDIO_PA_ENABLE
26
RX_AUDIO
DET_AUDIO_5
C0153
0.1uF
TP0111
DET_AUDIO
C0157
470pF
R0157
* note 1
C0150
.47uF
RX_AUDIO-SEND
GP3
12
TIMING_CAP
GP5
GROUND
2_1MHZ
6
U0106-2
5 MC3403
7
AUX_RX_IN
UNATTEN_RX_OUT
1
3
2
4
J0103-1
J0103-3
J0103-2
J0103-4
TX_AUDIO_RET
TX_AUDIO_SEND
R0191
10K
NU
C0191
0.1uF
C0149
33pF
1
UNATTEN_RX_OUT
EEPROM_CE
C0155
33pF
R0156
U0108
8 EEPROM_X25160
VCC
7
6
SPI_CLCK_SRC
HOLD
SCK
3 WP
RX_AUDIO_RET
J0103-5
J0103-7
J0103-8
J0103-6
5
7
8
6
J0103_7
J0103_8
GP3
GP5
SI
CS
SO
VSS
4
5
VAG_7
VAG
R0171
47.5K
2
3
SPI_MOSI
U0105-1
MC3403
1
VAG
2
R0192
0
NU
R0172
47.5K
C0171
10uF
C0172
1uF
SPI_MISO
R0155
68K
0
RSSI_BUF
R0154
9
U0105-4
MC3403 10
10K
10K
R0112
68K
R0183
9
9V3
8
R0152
R0189
C0184
1uF
+5V
47K
12
U0106-3
MC3403
C0151
470pF
U0107-2
MC14053B
INHIBIT
6
0
15
1 1
10
2
C0181
0.1uF
23
C0185
100pF
VAG_BYPASS 28
R0150
51K
2_1MHZ_5 TP0110
R0153 4.7K
NU
LOCK_DET_5
LOCK_DET
C0111
470pF
10K R0182
VAG
PE3
C0110
470pF
30K
20
C0148
470pF
R0144
BATTERY_VOLTAGE
C0109
470pF
RX_OUT
R0181
19
C0145
.001uF
C0156
47uF
NU
CSQ_DET_5
AUX_RX_IN
C0146
56pF
NU
.001uF
NU
VLTG_LIMIT
(IGNITION_SENSE)
R0188
0
NU
R0149
0
C0141
10uF
+5V
PA_DISABLE
C0142
C0147
R0145
30K
NU
R0141
100
C0196 C0197 C0198
470pF 470pF 470pF
37
NC
GCB5 3
UNATTEN_RX_OUT
RX_IN
PL_DPL_IN
GCB3
XTAL_OUT
GCB4
C0199
470pF
1
+2V5
R0146
0
9V3
U0103
SQ_ATT_OUT
MOD_IN
R0147
180K
U0106-1
3 MC3403
MIC
C0137
.01uF
47K
MOD_IN_5
10K
R0148
470K
2
FLAT_TX_AUDIO
Q0137
SQ_ATT_OUT_5
+2V5
R0136
33K
1
6
8
.
n
6 U0104-2
74AC08 5
R0127
200K
FRACN_CE
C0194
470pF
5_BIT_ATTEN_OUT
AFIC
R0139
240K
SPI_DATA
FRACN_CE_5
FRACN_CE
HIGH_LOW_BAND_5
HIGH_LOW_BAND
SQ_ATT_IN_5
SQ_ATT_IN
0.1uF
4_BIT_ATTEN_OUT
GCB1
6
SPI_DATA_5
270nH
UNATTEN_RX_OUT
16
SQ_ATTEN_IN
18
SQ_ATTEN_OUT
PL_DPL_DECODER_OUT
39
0
NU
.01uF
CHIP_SELECT
13 AUX_TX_IN
R0131
+5V
EXT_ALERT_TONE_IN
29
CLK_E
R0125
C0126
0.1uF
U0105-3
MC3403
SPI_CLK_5
L0195
SPI_CLK
SPI_MOSI
0.1uF
32 PL_CLOCK_STROBE
U0107-1
MC14053B
12
6
0 INHIBIT
14
13 1
11
12
C0121
R0126
HOOK 3
MIC_PTT 4
MIC 16
HANDSET_AUDIO 14
INT_SPKR+ 1
INT_SPKR- 2
ON_OFF_CONTROL 18
SPI_CLCK_SRC
R0122
220K
R0123
33
27
R0130
0
NU
+2V5
160K
SPI_MISO
SPI_MOSI
SPI_CLCK_SRC
8 U0104-3
74AC08 10
SPI_DATA_SRC
R0121
C0125
0.1uF
1
BUS+
7
19
20
DAC_CE
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
1
64
63
62
59
58
57
56
d
i
o
BUS+ 15
ANALOG_1 10
ANALOG_2 11
ANALOG_3 13
LED_CE 12
SPI_DATA_BUF 6
LED_CLCK_BUF 5
LCD_CLCK_BUF 8
3
61
60
48
44
35
32
26
4
3
2
R0104
33K
FLT_A+ 17
+5V 9
PD0
PD1
PD2
PD3
PD4
PD5
NC10
NC9
NC8
NC7
NC6
NC5
NC4
NC3
NC1
NC
J0101
MC68HC711E20
AFIC_CE
B+_CONTROL
.m
y
r
a
TP0104
FLT_A+
47
50
51
52
53
54
U0101
R0107
100
PBIAS_RESISTOR
8
R0100
0
NU
23
VSS
49
VSS
24
VSS
33
XTL
31
EXTAL
IRQ 46
XIRQ 45
28
STRA
R0175
150K
5
TP0105
C0175
.001uF
R0109
47K
35 XTAL_IN
R0120
10K
GND
TP0108
R0108
47K
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
CS2 4
CS3 5
55
VDD
VRH 22
VRL 21
20
18
16
14
19
17
15
13
MC74HC138A
+5V
PB1
PB2
PB3
PB4
PB5
PB6
PB7
+5V
L0194
270nH
C0174
3.3uF
w
Y6
Y7
11
10
9
8
7
6
5
C0105
0.1uF
w
EEPROM_CE
AFIC_CE
DAC_CE
FRACN_CE
OPTION_BD_CE
LED_CE
LCD_CE
1
A0
2
Y0
A1
3
Y1 U0102 A2
Y2
Y3
Y4
6
CS1
Y5
RESET
43
R_W*
30
12
42
41
40
39
38
37
36
34
VDD
15
14
13
12
11
10
9
7
PB0
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
16
MODB
25
MODA
27
R0101
10K
+5V
C0176
SPI_MOSI
SPI_CLCK_SRC
RESET
TP0109
9V3
+5V
1uF
0 NU
1uF
R0105
10K
9V3
+5V
R0173
:/
/
w
C0101
0.1uF
C0131
0.1uF
C0170
100K
30
C0103
3.3uF
C0162
0.1uF
C0163
0.1uF
C0173
29
K9V1_ENABLE_5
6
R0166
10K
31
RESET
K9V1_ENABLE
C0117
33pF
C0115
22pF
C0104
.01uF
RESET 34
R0106
2.2K
4.7K
AUX_RX_IN
R0102
C0161
R0163
U0104-4 11
13 74AC08
SPI_CLCK_SRC
25 PL_CAP
Q0161
Y
L0170
33000nH
R0161
100K
R0162
10K
12
1 XX
+5V
R0164
1MEG
NU
h
tt p
C0114
33pF
+5V
+2V5
C0164
.0047uF
R0167
47K
R0115
1.8MEG
DPL_CAP
R0110
10K
X
24
Q0114
R0114
4.7K
USW_+5V_CL
C0133
0.1uF PWR_GND
VEE VSS
7
8
14
4_BIT_ATTEN_IN
15
5_BIT_ATTEN_IN
21
TX_OUT
WDT_DISABLE 4
1
VDDH1
17
VDDH2 38
VDDL
R0113
10K
TP0106 TP0107
C0132
0.1uF PWR_GND
GND
11
XX
0
+5V
L0114 C0116 Y0114
33uH 3.6pF INSTPAR
SERIAL_DATA_IN
C0102
470pF
PA2
PC0
PC1
PC2
PC3
PC5
PB4
PB5
PB7
GND
6
XX
XX
16
VDD
U0107-4
4
VCC
U0106-5
C0134
0.1uF PWR_GND
GND
11
PWR_GND
ADAPT
VAG_VOLUME
(GP6_OUT)
C0119
470pF
C0118
470pF
4
VCC
U0105-5
14
VCC
U0104-5
11
(GP3_OUT)
R0119
1K
4.7K
SERIAL_CLOCK_IN
(GP5-IN)
(GP5_OUT)
270
270
TX_IN
(GP3-IN)
(GP6-IN)
SPI_MISO
J0102_3
(GP6)
SPI_MOSI
OPTION_BD_CE
SPI_CLCK_SRC
(GP4)
J0102_7
+5V
9 PRE_EMPHASIS_OUT
(GP1-IN)
U0107-3
MC14053B
INHIBIT
+5V
9V3
+5V
10
(GP4-IN)
(GP2-OUT)
9V3
+5V
R0118
R0117
C0154
0.1uF
0102725B33_CNTL
GEPD5459-1
0102725B39_CNTL
GEPD5461-1
changed by: R0157
changed by: R0186
VAG
0102725B33
0102725B39
0102725B33
0102725B39
(128 CHANNEL 12,5kHz) 15k
27k
VHF GM950i, Controller Schematic Diagram
1 of 2
5-53
VHF GM950i, Controller_IO Schematic Diagram
+5V
+5V
+5V
+5V
(GP1)
R0431
R0432
4.7K
47K
R0413
47K
R0462
4.7K
R0461
47K
PC5
(GP5)
Q0461
R0412
4.7K
PC1
(GP3)
PC2
47K
Q0431
Q0412
47K
47K
C0461
.01uF
47K
C0464
470pF
R0463
270
47K
C0413
.01uF
47K
VR0464
14V
R0414
270
Q0462
C0412
470pF
VR0411
14V
Q0411
R0411
R0464
PB4
+5V
FLT_A+
PB5
h
tt p
10K
10K
C0463
.01uF
R0465
0
NU
C0411
.01uF
R0415
0
NU
D0471
NU
XX
EMERGENCY_CONTROL
J0103_8
XX
XX
J0103_7
(GP2)
R0442
4.7K
NU
R0443
4.7K
Q0441
NU
R0441
10K
C0442
470pF
PC0
C0414
470pF
:/
/
w
C0462
470pF
+5V
(GP4)
+5V
R0474
47K
R0472
0
(GP6)
Q0432
C0435
.01uF
J0102_7
47K
R0435
270
C0436
470pF
PB7
10K
C0438
.01uF
0
d
i
o
J0102_3
C0439
470pF
FLT_A+
RX_AUDIO
R0402
1K
C0402
.0033uF
+5V
R0407
Q0401
7
VCC
9
1
3
8
INV
NINV
RR
M_SS*
15K
R0405
AUDIO_PA_ENABLE
OUT1
OUT2
4
6
C0419
.001uF
e
t
R0406
22K
R0404
10K
U0401
TDA1519C
SW_B+
GND1
GND2
4.7K
1
6
8
.
n
R0401
C0407
.1uF
C0401
.100uF
R0444
BUS+
270
C0444
470pF
R0476
270
L0401
J0400
MIC
C0445
C0421
470pF
VR0421
14V
VR0419
14V
NU
.47uF
VR0445
14V
C0446
470pF
R0446
100K
(IN)
GP1
GP2
(OUT)
BUS+
GP3
(IN/OUT)
GP5
(IN/OUT)
GP6
(IN/OUT)
RSSI
EXT_SPKR+
IGNITION
GP4
(IN)
FLAT_TX_AUDIO
FLT_RX_AUDIO
ANALOG_GND/SW_B+
GROUND
C0454
470pF
C0450
+5V
R0450
560
SW_B+
FLT_RX_AUDIO
R0455
0
47uF
R0426
47K
R0451
100K
R0427
0
C0451
470pF
VR0450
14V
(IGNITION_SENSE)
Q0421
R0454
1K
FLT_A+
47K
R0456
0
NU
RSSI_BUF
47K
R0423
4.7K
NU
C0406
.001uF
C0420
.001uF
VR0420
14V
NU
C0455
470pF
VR0454
14V
R0422
IGNITION_CONTROL
10K
C0422
470pF
INT_SPKR-
FLAT_TX_AUDIO
PE3
C0405
.001uF
3
4
6
8
12
14
15
16
1
2
10
9
5
11
13
7
L0402
C0404
47uF
C0403
0.1uF
NU
VR0444
5.1V
VR0471
33V
C0472
470pF
2 5
10K
XX
C0471
470pF
VR0435
14V
Q0433
R0438
XX
47K
.m
y
r
a
47K
47K
w
PC3
Q0471
R0473
68K
NU
R0471
0
NU
XX
C0441
.01uF
R0477
10K
NU
w
PA2
R0437
4.7K
R0436
47K
R0475
4.7K
VR0441
33V
Q0442
FLT_A+
R0439
0
NU
VR0431
14V
C0431
470pF
VR0422
5.1V
R0425
10K
0102725B33_IO
0102725B39_IO
INT_SPKR+
GEPD5462 -1
FLT_A+
+5V
FLT_A+
+5V
VHF GM950i, Controller_IO Schematic Diagram
2 of 2
5-55
VHF GM950i Main Board - Controller
VHF GM950i Main Board Controller
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113743K15
100nF 16V
C0149
2113740F39
33pF 5% 50V
C0102
2113741F17
470pF 50V
C0150
2311049A05
C0103
2311049A42
C0151
2113741F17
470pF 50V
C0104
2113741F49
10nF 50V
C0152
2311049A07
C0105
2113743K15
100nF 16V
C0153
2113743K15
C0109
2113741F17
470pF 50V
C0154
2113743K15
100nF 16V
C0110
2113741F17
470pF 50V
C0155
2113740F39
33pF 5% 50V
C0111
2113741F17
470pF 50V
C0157
2113741F17
470pF 50V
C0112
2113741F25
1nF 50V
C0161
2113743K15
100nF 16V
C0114
2113740A41
33pF 5% 50V
C0115
2113740A37
22pF 5% 50V
C0116
2113740G16
C0117
ne
t
C0101
16
Circuit
Ref
TANT CP 1uF 10% 16V
2113743K15
100nF 16V
C0163
2113743K15
100nF 16V
Ceramic Chip 3.6 P
C0164
2113741F41
4.7nF 50V
2113740A41
33pF 5% 50V
C0170
2311049A07
TANT CP 1uF 10% 16V
C0118
2113741F17
470pF 50V
C0171
2311049J23
TANT CP 10uF 10% 6V
C0119
2113741F17
470pF 50V
C0172
2311049A07
TANT CP 1uF 10% 16V
C0121
2113743K05
39nF 16V
C0173
2311049A07
TANT CP 1uF 10% 16V
C0122
2113741F41
4.7nF 50V
C0174
2113743K15
100nF 16V
C0125
2113743K15
100nF 16V
C0175
2113741F25
1nF 50V
C0126
2113743K15
100nF 16V
C0176
2311049A42
TANT CP 3.3 UF 10% 6V
://
w
w
w
C0162
ht
tp
.m
yr
ad
io
8.
100nF 16V
C0127
2113743K15
100nF 16V
C0181
2113743K15
100nF 16V
C0131
2113743K15
100nF 16V
C0182
2113743K15
100nF 16V
C0132
2113743K15
100nF 16V
C0184
2311049A07
TANT CP 1uF 10% 16V
C0133
2113743K15
100nF 16V
C0185
2113740F51
100pF 5% 50V
C0134
2113743K15
100nF 16V
C0191
2113743K15
100nF 16V
C0137
2113741F49
10nF 50V
C0194
2113741F17
470pF 50V
C0141
2311049J26
C0196
2113741F17
470pF 50V
C0142
2113743A19
100nF 16V
C0197
2113741F17
470pF 50V
C0145
2113741F25
1nF 50V
C0198
2113741F17
470pF 50V
C0148
2113741F17
470pF 50V
C0199
2113741F17
470pF 50V
5-57
Circuit
Ref
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
2113743A19
100nF 16V
C0472
2113741F17
470pF 50V
C0402
2113741F37
3.3nF 50V
D0101
4813833C02
C0404
2311049A99
DIODE DUAL SOT
MMBD6100
C0405
2113741F25
1nF 50V
J0101
0902636Y01
C0406
2113741F25
1nF 50V
J0102
0904424J06
C0407
2109720D14
CER LOW DIST 100nF
J0103
0904424J06
C0411
2113741F49
10nF 50V
J0400
2804503J01
C0412
2113741F17
470pF 50V
L0114
2460578C43
C0413
2113741F49
10nF 50V
L0170
2462587K26
CHIP IND 33000 NH
C0414
2113741F17
470pF 50V
L0194
2462587Q40
C0419
2113741F25
1nF 50V
L0195
2462587Q40
COIL CHIP 270nH
C0420
2113741F25
1nF 50V
L0401
2484657R01
Ferrite Bead
C0421
2113741F17
470pF 50V
L0402
2484657R01
Ferrite Bead
C0422
2113741F17
470pF 50V
C0431
2113741F17
470pF 50V
C0435
2113741F49
10nF 50V
C0436
2113741F17
470pF 50V
C0438
2113741F49
10nF 50V
C0439
2113741F17
470pF 50V
C0441
2113741F49
C0442
2113741F17
C0444
2113741F17
C0445
2311049A05
470pF 50V
C0455
2113741F17
470pF 50V
C0461
2113741F49
10nF 50V
C0462
2113741F17
470pF 50V
C0463
2113741F49
10nF 50V
C0464
2113741F17
470pF 50V
C0471
2113741F17
470pF 50V
ne
8.
.m
yr
ad
Q0138
4880048M01
Q0161
4880214G02
TSTR NPN 40V .2A
Q0401
4880214G02
TSTR NPN 40V .2A
Q0411
4880214G02
TSTR NPN 40V .2A
Q0412
4880048M01
Q0421
4880048M01
Q0431
4880048M01
Q0432
4880048M01
Q0433
4880214G02
TSTR NPN 40V .2A
Q0442
4880052M01
TSTR NPN DRLNGTN
Q0461
4880048M01
Q0462
4880214G02
TSTR NPN 40V .2A
Q0471
4880048M01
R0101
0662057A73
10k 1/16W 5%
R0102
0662057A65
4k7 1/16W 5%
R0103
0662057A73
10k 1/16W 5%
R0104
0662057A85
33k 1/16W 5%
R0105
0662057A73
10k 1/16W 5%
://
w
w
ht
tp
2113741F17
16
4880048M01
C0454
io
Q0137
w
TSTR NPN 40V .2A
470pF 50V
470pF 50V
5-58
4880214G02
470pF 50V
2113741F17
C0450
COIL CHIP 270nH
Q0114
10nF 50V
C0451
C0446
t
C0401
2113741F17
470pF 50V
2311049A99
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
0662057A57
2k2 1/16W 5%
R0145
0662057A84
30k 1/16W 5%
R0107
0662057A25
100 1/16W 5%
R0147
0662057B04
180k 1/16W 5%
R0108
0662057A89
47k 1/16W 5%
R0148
0662057B14
470k 1/16W 5%
R0109
0662057A89
47k 1/16W 5%
R0149
0662057B47
0 1/16W
R0110
0662057A73
10k 1/16W 5%
R0150
0662057A90
51k 1/16W 5%
R0111
0662057A85
33k 1/16W 5%
R0151
0662057A73
10k 1/16W 5%
R0112
0662057A93
68k 1/16W 5%
R0152
0662057A73
10k 1/16W 5%
R0113
0662057A73
10k 1/16W 5%
R0154
0662057A73
R0114
0662057A65
4k7 1/16W 5%
R0155
0662057A93
68k 1/16W 5%
R0115
0662057B28
1.8M 1/16W 5%
R0156
0662057B47
0 1/16W
R0116
0662057C61
270 1/16W 5%
R0157
R0117
0662057C61
270 1/16W 5%
0662057A77
0662057A84
15k 1/16W 5% (12.5kHz)
30k 1/16W 5% (20/25kHz)
R0118
0662057A65
4k7 1/16W 5%
0662057A97
100k 1/16W
R0119
0662057A49
1k 1/16W 5%
R0120
0662057A73
10k 1/16W 5%
R0121
0662057B03
160k 1/16W 5%
R0122
0662057A93
68k 1/16W 5%
R0123
0662057A97
R0124
0662057A69
6k8 1/16W 5%
R0125
0662057B05
200k 1/16W
R0126
0662057B05
200k 1/16W
R0127
0662057B05
200k 1/16W
R0128
0662057A73
10k 1/16W 5%
ne
10k 1/16W 5%
8.
io
.m
yr
ad
w
://
w
w
ht
tp
R0161
t
R0106
16
Circuit
Ref
R0162
0662057A73
10k 1/16W 5%
R0163
0662057A97
100k 1/16W
R0165
0662057A89
47k 1/16W 5%
R0166
0662057A73
10k 1/16W 5%
R0167
0662057A89
47k 1/16W 5%
R0171
0662057R92
47.5k .1W 1%
R0172
0662057R92
47.5k .1W 1%
R0175
0662057B02
150k 1/16W
R0181
0662057A84
30k 1/16W 5%
R0182
0662057A73
10k 1/16W 5%
R0183
0662057A73
10k 1/16W 5%
R0184
0662057A84
30k 1/16W 5%
R0186
0662057A83
0662057A90
27k 1/16W 5% (12.5kHz)
51k 1/16W 5% (20/25kHz)
R0134
0662057A73
10k 1/16W 5%
R0135
0662057A89
47k 1/16W 5%
R0136
0662057A85
33k 1/16W 5%
R0137
0662057A89
47k 1/16W 5%
R0189
0662057A95
82k 1/16W 5%
R0138
0662057A65
4k7 1/16W 5%
R0401
0662057A65
4k7 1/16W 5%
R0139
0662057B07
240k 1/16W
R0402
0662057A49
1k 1/16W 5%
R0141
0662057A25
100 1/16W 5%
R0404
0662057A73
10k 1/16W 5%
R0142
0662057A49
1k 1/16W 5%
R0405
0662057A73
10k 1/16W 5%
R0143
0662057A89
47k 1/16W 5%
R0406
0662057A81
22k 1/16W 5%
R0144
0662057A89
47k 1/16W 5%
5-59
Circuit
Ref
0662057A73
10k 1/16W 5%
R0412
0662057A65
4k7 1/16W 5%
R0413
0662057A89
47k 1/16W 5%
R0414
0662057C61
270 1/16W 5%
R0422
0662057A73
10k 1/16W 5%
R0425
0662057A73
10k 1/16W 5%
R0426
0662057A89
47k 1/16W 5%
R0427
0662057B47
0 1/16W
R0431
0662057A89
47k 1/16W 5%
R0432
0662057A65
4k7 1/16W 5%
R0435
0662057C61
270 1/16W 5%
R0436
0662057A89
47k 1/16W 5%
R0437
0662057A65
4k7 1/16W 5%
R0438
0662057A73
10k 1/16W 5%
R0441
0662057A73
10k 1/16W 5%
R0443
0662057A65
4k7 1/16W 5%
R0444
0662057C61
270 1/16W 5%
R0446
0662057A97
100k 1/16W
R0450
0662057A43
R0451
0662057A97
R0454
0662057A49
R0455
0662057B47
://
w
w
560 1/16W 5%
100k 1/16W
1k 1/16W 5%
ht
tp
0 1/16W
R0463
0662057C61
270 1/16W 5%
R0464
0662057A73
10k 1/16W 5%
R0472
0662057B47
0 1/16W
R0474
0662057A89
47k 1/16W 5%
R0475
0662057A65
4k7 1/16W 5%
R0476
0662057C61
270 1/16W 5%
U0101
5102898X66
PROC350 PLAT S/W
R010000 A3
R0461
R0462
5-60
0662057A89
47k 1/16W 5%
0662057A65
4k7 1/16W 5%
5113805A30
IC 10F8 DCDR/REMUX
74HC138
U0103
5102227J35
CHIP CAR TEST 27J35
U0104
5105492X36
74AC08 4 AND GATES
U0105
5183222M49
IC QUAD OPAMP_3403_
U0106
5183222M49
IC QUAD OPAMP_3403_
U0107
5184704M60
IC MUX/DEMUX,TRIPLE
2-CHNL
U0108
5105462G78
IC EEPROM !&K SPEI
CMOS
U0401
5109699X01
VR0118
4880140L06
DIODE 5.1V 5% 225mW
VR0411
4813830A27
DIODE 14V 5% 225mW
VR0421
4813830A27
DIODE 14V 5% 225mW
t
R0411
U0102
ne
15k 1/16W 5%
Description
8.
0662057A77
w
R0407
Motorola
Part No.
AUDIO PA TDA1915C
16
Description
io
Motorola
Part No.
.m
yr
ad
Circuit
Ref
VR0422
4880140L06
DIODE 5.1V 5% 225mW
VR0431
4813830A27
DIODE 14V 5% 225mW
VR0435
4813830A27
DIODE 14V 5% 225mW
VR0441
4813830A40
SOC23 AUTO SDN
VR0444
4880140L06
DIODE 5.1V 5% 225mW
VR0445
4813830A27
DIODE 14V 5% 225mW
VR0450
4813830A27
DIODE 14V 5% 225mW
VR0454
4813830A27
DIODE 14V 5% 225mW
VR0464
4813830A27
DIODE 14V 5% 225mW
VR0471
4813830A40
SOC23 AUTO SDN
Y0114
4880113R01
CRYSTAL 7.9488
VHF GM950E, Controller Schematic Diagram
MIC_PTT
R0116
J0102
1
2
3
4
5
6
7
8
VR0118
5.1V
Q0161
5
R0165
7
Y
U0105-2
MC3403
47K
+5V
TP0105
8
47
50
51
52
53
54
TP0104
+5V
D0101
R0103
10K
2
C0121
100K
NU
.039uF
13
R0124
6.8K
R0125
200K
LED_CE
200K
1
3 U0104-1
74AC08 2
+5V
C0127
0.1uF
4
R0134
10K
R0137
47K
R0138
4.7K
9
MIC_PTT
47K
Q0138
INT_SPKR+
47K
U0106-1
3 MC3403
NU
47K
e
t
LCD_CE
DAC_CE_5
DAC_CE
SPI_DATA_SRC_5
SPI_MOSI
SPI_CLCK_SRC_5
SPI_CLCK_SRC
PA_ENABLE_5
R0142
1K
R0128
C0141
10uF
+5V
PA_DISABLE
10K
VLTG_LIMIT_5
R0143
.100uF
NU
47K
NU
C0147
RSSI_5
RSSI
R0111
33K
CSQ_DET
C0151
470pF
FAST_SQ_5
FAST_SQ
C0112
.001uF
82K NU
9
C0181
0.1uF
30K
R0186
27k
NU
R0184
30K
C0182
0.1uF
23
GND
C0152
1uF
8
U0106-4
10 MC3403
NU
R0187
R0185 NU
FLT_RX_AUDIO
0
NU
VAG
AUDIO_PA_ENABLE
26
RX_AUDIO
DET_AUDIO_5
C0153
0.1uF
TP0111
DET_AUDIO
C0157
470pF
R0157
* note 1
C0150
.47uF
RX_AUDIO-SEND
GP3
12
GP5
GROUND
J0103-5
J0103-7
J0103-8
J0103-6
5
7
8
6
J0103_7
J0103_8
GP3
GP5
+5V
C0145
.001uF
2_1MHZ_5
6
U0106-2
5 MC3403
14
U0106-3
MC3403
13 NU
R0152
R0151
10K
NU
R0189
C0184
NU
VAG_BYPASS 28
R0150
51K
TP0110
2_1MHZ
7
AUX_RX_IN
UNATTEN_RX_OUT
1
3
2
4
J0103-1
J0103-3
J0103-2
J0103-4
TX_AUDIO_RET
TX_AUDIO_SEND
R0191
10K
NU
C0191
0.1uF
NU
C0149
33pF
8
U0108
NU
EEPROM_X25160
1
UNATTEN_RX_OUT
EEPROM_CE
9V3
VAG_7
VAG
VCC
7
HOLD
SCK
3 WP
RX_AUDIO_RET
C0155
33pF
R0156
12
10K
R0112
68K
U0107-2
MC14053B
INHIBIT
6
0
15
1 1
10
2
C0148
470pF
C0146
56pF
NU
47K
R0153 4.7K
NU
LOCK_DET_5
LOCK_DET
C0111
470pF
22
7
8
40
36
2
VAG
PE3
C0110
470pF
10K R0182
R0147
180K
R0145
30K
BATTERY_VOLTAGE
C0109
470pF
30K
20
1
C0156
47uF
NU
CSQ_DET_5
RX_OUT
R0148
470K
.001uF
NU
VLTG_LIMIT
(IGNITION_SENSE)
R0181
19
C0185
100pF
NU
1uF
UNATTEN_RX_OUT
RX_IN
PL_DPL_IN
GCB3
XTAL_OUT
GCB4
AUX_RX_IN
R0144 NU
C0142
R0188
0
NU
R0149
0
NU
R0141
100
C0199
470pF
C0196 C0197 C0198
470pF 470pF 470pF
+2V5
+2V5
R0146
0
9V3
47K
R0139
240K
2
NU
MIC
C0137
.01uF
47K
0
NU
NU
R0135
FLAT_TX_AUDIO
Q0137
R0131
R0136
33K
1
6
8
.
n
6 U0104-2
74AC08 5
R0127
200K
MOD_IN
R0183 NU
10K
GCB1
6
.01uF
+5V
4_BIT_ATTEN_OUT
AFIC
39
SQ_ATT_OUT
MOD_IN_5
37
NC
GCB5 3
5_BIT_ATTEN_OUT
U0103
13 AUX_TX_IN
FRACN_CE_5
FRACN_CE
HIGH_LOW_BAND_5
HIGH_LOW_BAND
SQ_ATT_IN_5
SQ_ATT_IN
FRACN_CE
SQ_ATT_OUT_5
32 PL_CLOCK_STROBE
C0122
C0126
0.1uF
CHIP_SELECT
SPI_DATA
270nH
UNATTEN_RX_OUT
0.1uF
16
SQ_ATTEN_IN
18
SQ_ATTEN_OUT
PL_DPL_DECODER_OUT
12
14
U0105-3
MC3403
TIMING_CAP
CLK_E
RESET
43
R_W*
30
29
C0125
0.1uF
27
U0107-1 NU
MC14053B
6
0 INHIBIT 14
13 1
11
12
220K
R0123
33
R0130
0
NU
+2V5
160K
R0122
SPI_MISO
SPI_MOSI
SPI_CLCK_SRC
8 U0104-3
74AC08 10
SPI_CLCK_SRC
R0121
R0126
HOOK 3
MIC_PTT 4
MIC 16
HANDSET_AUDIO 14
INT_SPKR+ 1
INT_SPKR- 2
ON_OFF_CONTROL 18
SPI_DATA_SRC
R0107
100
AFIC_CE
B+_CONTROL
1
64
63
62
59
58
57
56
1
BUS+
7
19
20
DAC_CE
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
R0109
47K
d
i
o
BUS+ 15
ANALOG_1 10
ANALOG_2 11
ANALOG_3 13
LED_CE 12
SPI_DATA_BUF 6
LED_CLCK_BUF 5
LCD_CLCK_BUF 8
3
61
60
48
44
35
32
26
4
3
2
R0104
33K
FLT_A+ 17
+5V 9
PD0
PD1
PD2
PD3
PD4
PD5
NC10
NC9
NC8
NC7
NC6
NC5
NC4
NC3
NC1
NC
J0101
MC68HC711E20
R0108
47K
33
XTL
31
EXTAL
IRQ 46
XIRQ 45
28
STRA
20
18
16
14
19
17
15
13
FLT_A+
U0101
R0175
150K
C0175
.001uF
.m
y
r
a
R0100
0
NU
23
VSS
49
VSS
24
VSS
TP0108
SPI_CLK
SPI_MOSI
C0194
470pF
PBIAS_RESISTOR
GND
+5V
C0162
0.1uF
5
R0120
10K
55
VDD
VRH 22
VRL 21
EXT_ALERT_TONE_IN
MC74HC138A
+5V
PB1
PB2
PB3
PB4
PB5
PB6
PB7
SPI_DATA_5
C0174
3.3uF
w
11
10
9
8
7
6
5
w
EEPROM_CE
AFIC_CE
DAC_CE
FRACN_CE
OPTION_BD_CE
LED_CE
LCD_CE
1
A0
2
Y0
A1
3
Y1 U0102 A2
Y2
Y3
Y4
6
CS1
Y5
CS2 4
Y6
Y7
CS3 5
C0105
0.1uF
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
VDD
15
14
13
12
11
10
9
7
PB0
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
16
MODB
25
MODA
27
R0101
10K
12
42
41
40
39
38
37
36
34
+5V
SPI_CLK_5
L0195
1uF
0
C0176
NU
:/
/
w
C0101
0.1uF
SPI_MOSI
SPI_CLCK_SRC
RESET
TP0109
L0194
270nH
C0170
R0173
NU
1uF
R0105
10K
C0161
35 XTAL_IN
C0103
3.3uF
100K
9V3
+5V
SPI_CLCK_SRC
0.1uF
C0163
0.1uF
C0173
30
K9V1_ENABLE_5
6
R0166
10K
29
RESET
K9V1_ENABLE
C0117
33pF
C0115
22pF
C0104
.01uF
R0163
RESET 34
R0106
2.2K
4.7K
AUX_RX_IN
R0102
L0170
33000nH
R0161
100K
R0162
10K
9V3
+5V
+5V
25 PL_CAP
R0115
1.8MEG
+2V5
R0164
1MEG
NU
h
tt p
C0114
33pF
+5V
C0164
.0047uF
R0167
47K
DPL_CAP
R0110
10K
X
24
Q0114
U0104-4 11
13 74AC08
C0131
0.1uF
C0133
0.1uF PWR_GND
VEE VSS
7
8
14
4_BIT_ATTEN_IN
15
5_BIT_ATTEN_IN
21
TX_OUT
WDT_DISABLE 4
1
VDDH1
17
VDDH2
38
VDDL
L0114 C0116 Y0114
33uH 3.6pF INSTPAR
R0114
4.7K
USW_+5V_CL
C0132
0.1uF PWR_GND
GND
11
12
1 XX
+5V
+5V
R0113
10K
TP0106 TP0107
C0134
0.1uF PWR_GND
GND
11
GND
7
SERIAL_DATA_IN
C0102
470pF
PA2
PC0
PC1
PC2
PC3
PC5
PB4
PB5
PB7
GND
6
XX
XX
16 NU
VDD
U0107-4
4 NU
VCC
U0106-5
4
VCC
U0105-5
PWR_GND
ADAPT
VAG_VOLUME
(GP6_OUT)
ADAPT_5
31
(GP3_OUT)
R0119
1K
C0119
470pF
C0118
470pF
14
VCC
U0104-5
11
(GP5-IN)
(GP5_OUT)
270
SERIAL_CLOCK_IN
(GP3-IN)
(GP6-IN)
4.7K
U0107-3
MC14053B
INHIBIT
XX
NU
0
+5V
9V3
+5V
SPI_MISO
J0102_3
(GP6)
SPI_MOSI
OPTION_BD_CE
SPI_CLCK_SRC
(GP4)
J0102_7
+5V
TX_IN
(GP1-IN)
270
9V3
+5V
10
(GP2-OUT)
R0118
9 PRE_EMPHASIS_OUT
(GP4-IN)
R0117
SI
CS
SO
VSS
4
6
5
SPI_CLCK_SRC
R0171
47.5K
2
3
SPI_MOSI
U0105-1
MC3403
1
VAG
2
R0192
0
NU
R0172
47.5K
C0171
10uF
C0172
1uF
SPI_MISO
R0155
68K
0
RSSI_BUF
8
R0154
9
U0105-4
MC3403 10
10K
NU
C0154
0.1uF
0102725B34_CNTL
( 4 CHANNEL 12,5kHz)
GEPD5446-1
0102725B40_CNTL
GEPD5460-1
changed by: R0157
0102725B34 (4 CHANNEL 12,5kHz) 15k
0102725B40 (4 CHANNEL 20/25kHz) 30k
VAG
VHF GM950E, Controller Schematic Diagram
1 of 2
5-61
VHF GM950E, Controller_IO Schematic Diagram
+5V
+5V
+5V
+5V
(GP1)
R0431
R0432
4.7K
47K
R0413
47K
R0462
4.7K
NU
R0461
47K
PC5
(GP5)
Q0461
NU
PC2
47K
C0461
.01uF
NU
47K
C0464
470pF
NU
R0463
270
NU
(GP3)
47K
Q0431
47K
47K
C0431
470pF
R0414
270
NU
C0412
470pF
NU
VR0411
14V
NU
Q0411
NU
R0411
FLT_A+
+5V
PB5
PB4
10K
NU
C0463
.01uF
NU
R0465
0
R0415
0
C0411
.01uF
NU
D0471
NU
XX
EMERGENCY_CONTROL
J0103_8
h
tt p
10K
NU
XX
XX
J0103_7
(GP2)
R0442
4.7K
NU
R0441
10K
NU
R0443
4.7K
NU
Q0441
NU
PC0
C0414
470pF
NU
:/
/
w
C0462
470pF
NU
+5V
(GP4)
R0474
47K
PA2
PC3
Q0471
(GP6)
R0471
0
R0473
68K
NU
Q0432
NU
47K
J0102_7
47K
Q0433
NU
R0438
C0436
470pF
NU
R0435
270
NU
VR0435
14V
NU
10K
NU
J0102_3
FLT_A+
RX_AUDIO
4.7K
R0402
1K
C0402
.0033uF
SW_B+
+5V
R0406
22K
R0407
R0404
10K
Q0401
U0401
TDA1519C
VCC
9
1
3
8
INV
NINV
RR
M_SS*
OUT1
OUT2
4
C0419
.001uF
e
t
7
1
6
8
.
n
C0407
.1uF
C0401
.100uF
10K
L0401
VR0471
33V
NU
C0472
470pF
NU
VR0419
14V
NU
3
4
6
8
12
14
15
16
1
2
10
9
5
11
13
7
MIC
C0421
470pF
VR0421
14V
C0445
NU
.47uF
FLAT_TX_AUDIO
VR0445
14V
NU
C0446
470pF
R0446
100K
(IN)
GP1
GP2
(OUT)
BUS+
GP3
(IN/OUT)
GP5
(IN/OUT)
GP6
(IN/OUT)
RSSI
EXT_SPKR+
IGNITION
GP4
(IN)
FLAT_TX_AUDIO
FLT_RX_AUDIO
ANALOG_GND/SW_B+
GROUND
C0454
470pF
+5V
FLT_RX_AUDIO
C0450
NU
R0450 NU
47uF
R0426
47K
SW_B+
560
R0455
0
C0451
470pF
R0451
100K
R0427
0
VR0450
14V
NU
(IGNITION_SENSE)
Q0421
R0454
1K
FLT_A+
47K
R0456
0
NU
RSSI_BUF
R0423
4.7K
NU
C0406
.001uF
VR0420
14V
NU
C0455
470pF
VR0454
14V
R0422
IGNITION_CONTROL
10K
C0422
470pF
INT_SPKR+
VR0444
5.1V
L0402
C0420
.001uF
INT_SPKR-
R0476
270
NU
PE3
C0405
.001uF
6
C0404
47uF
C0403
0.1uF
NU
270
C0444
470pF
47K
GND1 GND2
2 5
AUDIO_PA_ENABLE
R0444
BUS+
J0400
15K
R0405
XX
R0477
10K
NU
47K
d
i
o
C0438
.01uF
NU
C0439
470pF
NU
XX
XX
C0471
470pF
NU
PB7
R0439
0
NU
VR0441
33V
NU
C0442
470pF
NU
47K
.m
y
r
a
C0435
.01uF
NU
NU
w
R0437
4.7K
NU
R0436
47K
R0475
4.7K
NU
w
R0472
0
Q0442
NU
C0441
.01uF
NU
FLT_A+
+5V
R0401
VR0431
14V
47K
Q0462
NU
R0464
PC1
Q0412
NU
C0413
.01uF
NU
VR0464
14V
NU
R0412
4.7K
NU
VR0422
5.1V
R0425
10K
0102725B33_IO
(64 CHANNEL 12.5kHz)
0102725B39_IO
0102725B34_IO
0102725B40_IO
(4 CHANNEL 12.5kHz)
GEPD5448 -1
FLT_A+
+5V
FLT_A+
+5V
0102725B34_IO
VHF GM950E, Controller_IO Schematic Diagram
2 of 2
5-63
VHF GM950E Main Board - Controller
VHF GM950E Main Board Controller
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113743K15
100nF 16V
C0150
2311049A05
C0102
2113741F17
470pF 50V
C0151
2113741F17
470pF 50V
C0103
2311049A42
C0152
2311049A07
TANT CP 1uF 10% 16V
C0104
2113741F49
10nF 50V
C0153
2113743K15
C0105
2113743K15
100nF 16V
C0154
2113743K15
C0109
2113741F17
470pF 50V
C0155
2113740F39
33pF 5% 50V
C0110
2113741F17
470pF 50V
C0157
2113741F17
470pF 50V
C0111
2113741F17
470pF 50V
C0161
2113743K15
100nF 16V
C0112
2113741F25
1nF 50V
C0162
2113743K15
100nF 16V
C0114
2113740A41
33pF 5% 50V
C0115
2113740A37
22pF 5% 50V
C0116
2113740G16
C0117
ne
t
C0101
16
Circuit
Ref
100nF 16V
2113743K15
100nF 16V
C0164
2113741F41
4.7nF 50V
CERAMIC CHIP 3.6 P
C0170
2311049A07
TANT CP 1uF 10% 16V
2113740A41
33pF 5% 50V
C0171
2311049J23
TANT CP 10uF 10% 6V
C0118
2113741F17
470pF 50V
C0172
2311049A07
TANT CP 1uF 10% 16V
C0119
2113741F17
470pF 50V
C0173
2311049A07
TANT CP 1uF 10% 16V
C0121
2113743K05
39nF 16V
C0174
2113743K15
100nF 16V
C0122
2113741F41
47nF 50V
C0175
2113741F25
1nF 50V
C0125
2113743K15
100nF 16V
C0176
2311049A42
TANT CP 3.3 uF 10% 6V
C0126
2113743K15
100nF 16V
C0181
2113743K15
100nF 16V
://
w
w
w
C0163
ht
tp
.m
yr
ad
io
8.
100nF 16V
C0127
2113743K15
100nF 16V
C0182
2113743K15
100nF 16V
C0131
2113743K15
C0194
2113741F17
470pF 50V
C0132
2113743K15
100nF 16V
C0196
2113741F17
470pF 50V
C0133
2113743K15
C0197
2113741F17
470pF 50V
C0134
2113743K15
100nF 16V
C0198
2113741F17
470pF 50V
C0137
2113741F49
10nF 50V
C0199
2113741F17
470pF 50V
C0141
2311049J26
C0401
2113743A19
100nF 16V
C0145
2113741F25
1nF 50V
C0402
2113741F37
3.3nF 50V
C0148
2113741F17
470pF 50V
C0404
2311049A99
C0149
2113740F39
33pF 5% 50V
C0405
2113741F25
1nF 50V
5-65
Motorola
Part No.
Circuit
Ref
Motorola
Part No.
Description
1nF 50V
R0106
0662057A57
2k2 1/16W 5%
C0407
2109720D14
CER LOW DIST 100nF
R0107
0662057A25
100 1/16W 5%
C0419
2113741F25
1nF 50V
R0108
0662057A89
47k 1/16W 5%
C0420
2113741F25
1nF 50V
R0109
0662057A89
47k 1/16W 5%
C0421
2113741F17
470pF 50V
R0110
0662057A73
10k 1/16W 5%
C0422
2113741F17
470pF 50V
R0111
0662057A85
33k 1/16W 5%
C0431
2113741F17
470pF 50V
R0112
0662057A93
68k 1/16W 5%
C0444
2113741F17
470pF 50V
R0113
0662057A73
10k 1/16W 5%
C0454
2113741F17
470pF 50V
R0114
0662057A65
C0455
2113741F17
470pF 50V
R0115
0662057B28
D0101
4813833C02
DUAL SOT MMBD6100
R0116
0662057C61
270 1/16W 5%
J0101
0902636Y01
R0117
0662057C61
270 1/16W 5%
J0102
0904424J06
R0118
0662057A65
4k7 1/16W 5%
J0103
0904424J06
R0119
0662057A49
1k 1/16W 5%
J0400
2804503J01
R0120
0662057A73
10k 1/16W 5%
L0114
2460578C43
Inductor CHIP 33.0UH 1
R0121
0662057B03
160k 1/16W 5%
L0170
2462587K26
CHIP IND 33000 NH
R0122
0662057A93
68k 1/16W 5%
L0194
2462587Q40
COIL CHIP 270nH
R0123
0662057A97
L0195
2462587Q40
COIL CHIP 270nH
R0124
0662057A69
6k8 1/16W 5%
L0401
2484657R01
Ferrite Bead
R0125
0662057B05
200k 1/16W
L0402
2484657R01
Ferrite Bead
R0126
0662057B05
200k 1/16W
Q0114
4880214G02
NPN 40V
R0127
0662057B05
200k 1/16W
Q0137
4880048M01
NPN DIG 47k/47k
R0128
0662057A73
10k 1/16W 5%
ne
8.
4k7 1/16W 5%
16
1.8M 1/16W 5%
Q0401
ht
tp
://
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2113741F25
w
C0406
io
Description
.m
yr
ad
Circuit
Ref
4880214G02
NPN 40V
R0137
0662057A89
47k 1/16W 5%
Q0421
4880048M01
NPN DIG 47k/47k
R0138
0662057A65
4k7 1/16W 5%
Q0431
4880048M01
NPN DIG 47k/47k
R0139
0662057B07
240k 1/16W
R0101
0662057A73
10k 1/16W 5%
R0141
0662057A25
100 1/16W 5%
R0102
0662057A65
4k7 1/16W 5%
R0142
0662057A49
1k 1/16W 5%
R0103
0662057A73
10k 1/16W 5%
R0145
0662057A84
30k 1/16W 5%
R0104
0662057A85
33k 1/16W 5%
R0146
0662057B47
0 1/16W
R0105
0662057A73
10k 1/16W 5%
R0147
0662057B04
180k 1/16W 5%
Q0138
Q0161
5-66
4880048M01
NPN DIG 47k/47k
R0130
0662057B47
0 1/16W
4880214G02
NPN 40V
R0134
0662057A73
10k 1/16W 5%
Circuit
Ref
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
0662057B14
470k 1/16W 5%
R0426
0662057A89
47k 1/16W 5%
R0149
0662057B47
0 1/16W
R0427
0662057B47
0 1/16W
R0150
0662057A90
51k 1/16W 5%
R0431
0662057A89
47k 1/16W 5%
R0153
0662057A65
4k7 1/16W 5%
R0432
0662057A65
4k7 1/16W 5%
R0154
0662057A73
10k 1/16W 5%
R0436
0662057A89
47k 1/16W 5%
R0155
0662057A93
68k 1/16W 5%
R0439
0662057B47
0 1/16W
R0156
0662057B47
0 1/16W
R0444
0662057C61
270 1/16W 5%
R0157
0662057A77
0662057A84
15k 1/16W 5% (12.5kHz)
30k 1/16W 5% (20/25kHz)
R0454
0662057A49
R0461
0662057A89
47k 1/16W 5%
R0161
0662057A97
100k 1/16W
R0465
0662057B47
R0162
0662057A73
10k 1/16W 5%
R0471
0662057B47
0 1/16W
R0163
0662057A97
100k 1/16W
R0165
0662057A89
47k 1/16W 5%
R0166
0662057A73
10k 1/16W 5%
R0167
0662057A89
47k 1/16W 5%
R0171
0662057R92
47.5k .1W 1%
R0172
0662057R92
47.5k .1W 1%
R0175
0662057B02
150k 1/16W
R0181
0662057A84
30k 1/16W 5%
R0182
0662057A73
10k 1/16W 5%
R0183
0662057A73
R0184
ne
t
R0148
0 1/16W
R0472
0662057B47
0 1/16W
R0474
0662057A89
47k 1/16W 5%
U0101
5102898X67
PROC350 PLAT S/W
R010000 A2
U0102
5113805A30
IC 10F8 DCDR/REMUX
74HC138
U0103
5102227J35
CHIP CAR TEST 27J35
U0104
5105492X36
74AC08 4 AND GATES
U0105
5183222M49
IC QUAD OPAMP
__3403_
10k 1/16W 5% (not used)
U0401
5109699X01
AUDIO PA TDA1915C
0662057A84
30k 1/16W 5%
VR0118
4880140L06
DIODE 5.1V 5% 225mW
R0401
0662057A65
4k7 1/16W 5%
VR0421
4813830A27
DIODE 14V 5% 225mW
R0402
0662057A49
1k 1/16W 5%
VR0422
4880140L06
DIODE 5.1V 5% 225mW
R0404
0662057A73
10k 1/16W 5%
VR0431
4813830A27
DIODE 14V 5% 225mW
R0405
0662057A73
10k 1/16W 5%
VR0444
4880140L06
DIODE 5.1V 5% 225mW
R0406
0662057A81
22k 1/16W 5%
VR0454
4813830A27
DIODE 14V 5% 225mW
R0407
0662057A77
15k 1/16W 5%
Y0114
4880113R01
CRYSTAL 7.9488
R0413
0662057A89
47k 1/16W 5%
R0415
0662057B47
0 1/16W 5%
R0421
0662057B47
0 1/16W (not used)
R0422
0662057A73
10k 1/16W 5%
R0425
0662057A73
10k 1/16W 5%
.m
yr
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16
8.
1k 1/16W 5%
5-67
ht
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yr
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16
8.
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5-68
VHF Supply Voltage Schematic Diagram
FLT_A+
USW_+5V
D0621
2
3
R0621
FLT_A+_8
USW_+5V_CL
1
FLT_A+
2.2K
VR0621
5.1V
4
2
R0601
10K
C0602
.1uF
LM2941T
5
VOUT
ON_OFF*
ADJ
R0602
7.5K
1
C0604
33uF
GND
3
C0603
10uF
C0605
.1uF
R0631
10
D0631
1
3
2
R0632
10
w
R0603
1.2K
C0631
.1uF
R0605
6.8K
9V3
9V3
U0631
LP2951CM
8
7
3
INPUT
OUTPUT
ERROR
FEEDBACK
SENSE
5V_TP
SHUTDOWN
C0632
33uF
1
+5V
5
2
C0633
.022uF
6
RESET
SW_B+
SW_B+
3.3K
R0613
R0617
R0641
C0613
470pF
3.3K
C0635
.1uF
4
1
6
8
.
n
R0612
C0634
47uF
GND
d
i
o
Q0611
R0611
1.2K
9V3_SUPP
.m
y
r
a
Q0601
R0604
1K
w
C0601
470pF
VIN
C0622
47uF
h
tt p
0
LM2941T
:/
/
w
R0606
0
U0601
C0621
470pF
30K
470pF
3.3K
3.3K
BATTERY_VOLTAGE
3.3K
3.3K
ON_OFF_CONTROL
B+_CONTROL
IGNITION_CONTROL
1
R0614
10K
1K
3
R0642
10K
C0641
0.1uF
VR0641
5.1V
e
t
EMERGENCY_CONTROL
R0615
10K
10K
Q0612
2
D0611
C0611
47uF
R0616
10K
C0612
0.1uF
0102725B36
Supply Voltage
GEPD5449-1
VHF Supply Voltage Schematic Diagram
5-69
VHF Main Board - Supply Voltage
VHF Main Board Supply Voltage
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113741F17
470pF 50V
R0612
0662057C87
3300 5 1/8
C0602
2109720D14
100nF LOW DIST
R0613
0662057C87
3300 5 1/8
C0603
2380090M24
LYT 10uF 50V 20%
R0614
0662057A73
10k 1/16W 5%
C0604
2311049A97
33uF 20% 16V
R0615
0662057A73
C0605
2109720D14
100nF LOW DIST
R0616
0662057A73
C0611
2311049A99
R0617
0662057C87
3300 5 1/8
C0612
2113743K15
100nF 16V
R0621
0662057A57
2k2 1/16W 5%
C0613
2113741F17
470pF 50V
R0631
0662057A01
10 1/16W 5%
C0621
2113741F17
470pF 50V
R0632
0662057A01
10 1/16W 5%
C0622
2311049A99
R0641
0662057A84
30k 1/16W 5%
C0631
2109720D14
100nF LOW DIST
R0642
0662057A73
10k 1/16W 5%
C0632
2311049A97
33uF 20% 16V
U0601
5105625U25
9.3V REG 2941
C0633
2113743E07
22nF 16V
U0631
5105469E65
VLTG REGLTR LP2951C
C0634
2311049A99
47uF 20% 10V
VR0621
4880140L06
5.1V 5% 225mW
C0635
2109720D14
100nF LOW DIST
VR0641
4880140L06
5.1V 5% 225mW
C0641
2113743K15
100nF 16V
D0611
4813833C02
DUAL SOT MMBD6100
D0621
4813833C02
DUAL SOT MMBD6100
D0631
4813833C02
DUAL SOT MMBD6100
ne
10k 1/16W 5%
.m
yr
ad
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10k 1/16W 5%
ht
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C0601
16
Circuit
Ref
Q0601
4880214G02
NPN 40V
Q0611
4805128M27
PNP SOT89
Q0612
4880214G02
NPN 40V
R0601
0662057A73
10k 1/16W 5%
R0602
0660076E70
FILM 7500
R0603
0660076E51
FILM 1200
R0604
0662057A49
1k 1/16W 5%
R0605
0662057A69
6k8 1/16W 5%
R0606
0662057B47
0 1/16W
R0611
0662057A51
1k2 1/16W 5%
5-71
ht
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VHF Main Board - Supply Voltage
5-72
VHF Power Control Schematic Diagram
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VHF Power Control Schematic Diagram
5-73
VHF Main Board - Power Control
VHF Main Board Power Control
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F51
100pF 5% 50V
R0714
0662057A81
22k 1/16W 5%
C0702
2113740F51
100pF 5% 50V
R0715
0662057A81
22k 1/16W 5%
C0703
2113743K15
100nF 16V Y5V
R0716
0662057B16
560k 1/16W 5%
C0711
2113741A59
CL2 X7R REEL
R0717
0662057A85
C0712
2113740F42
43pF 5% 50V
R0718
0662057A93
C0713
2113740F51
100pF 5% 50V
R0719
0662057A93
68k 1/16W 5%
C0714
2113743A19
100nF 16V
R0721
0662057A69
6k8 1/16W 5%
C0716
2113741A59
CL2 X7R REEL
R0722
0662057A81
22k 1/16W 5%
C0721
2113740F51
100pF 5% 50V
R0723
0662057A89
47k 1/16W 5%
C0722
2113740F51
100pF 5% 50V
R0724
0662057A73
10k 1/16W 5%
C0723
2113740F51
100pF 5% 50V
R0725
0662057A73
10K 1/16W 5%
C0731
2113743K15
100nF 16V Y5V
R0731
0662057A73
10k 1/16W 5%
C0732
2113740F51
100pF 5% 50V
R0732
0662057A65
4k7 1/16W 5%
C0733
2113743A23
220nF 16V
R0733
0662057A89
47k 1/16W 5%
C0741
2113740F51
100pF 5% 50V
R0734
0662057R92
47.5k .1W 1%
D0721
4813833C02
DIODE DUAL
R0735
0662057C01
0 1/10W 5%
D0731
4813833C02
DIODE DUAL
R0741
0662057A49
1k 1/16W 5%
D0732
4813833C02
DIODE DUAL
R0742
0662057A49
1k 1/16W 5%
Q0711
4880214G02
NPN 40V .2A
U0701
5183222M49
IC QUAD OPAMP
__3403_
U0731
5113811G02
IC D/A CONV & BIT 4
CHAN
4880048M01
NPN DIG 47k/47k
Q0741
4880048M01
NPN DIG 47k/47k
Q0742
4805128M27
PNP SOT89
R0701
0662057A97
100k 1/16W
R0702
0662057A97
100k 1/16W
R0703
0662057A61
3k3 1/16W 5%
R0704
0662057A93
68k 1/16W 5%
R0711
0662057A81
22k 1/16W 5%
R0712
0662057A37
330 1/16W 5%
R0713
0662057A61
3k3 1/16W 5%
ne
33k 1/16W 5%
68k 1/16W 5%
8.
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.m
yr
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Q0731
t
C0701
16
Circuit
Ref
5-75
t
ne
8.
16
io
.m
yr
ad
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5-76
VHF Power AmpliÞer 5-25W Schematic Diagram
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6
8
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VHF Power AmpliÞer 5-25W Schematic Diagram
5-77
VHF Main Board - Power AmpliÞer 5-25W
VHF Main Board Power AmpliÞer 5-25W
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F25
8.2pF 5% 50V
C3611
2113741F25
1nF 50V
C3502
2113741F17
470pF 50V
C3614
2113741F49
10nF 50V
C3511
2113740F29
12pF 5% 50V
C3621
2113741A57
33nF 50V
C3512
2113740F37
27pF 5% 50V
C3622
2113741A57
C3513
2113741F17
470pF 50V
C3623
2113740A67
C3514
2113741F25
1nF 50V
C3631
2113741A57
33nF 50V
C3520
2111078B32
39pF 5%
C3632
2111078B59
470pF 5%
C3521
2111078B42
100pF 5%
C3633
2113743A23
220nF 16V
C3523
2111078B36
56pF 5%
C3634
2311049A08
TANT CP 1 uF 10V 35%
C3524
2111078B49
180pF 5% (not used)
C3641
2113741F49
10nF 50V
C3525
2111078B52
240pF 5%
C3642
2113741F17
470pF 50V
C3526
2111078B49
180pF 5% (not used)
C3643
2113741F49
10nF 50V
C3527
2111078B59
470pF 5%
C3644
2113741F49
10nF 50V
C3530
2111078B48
160pF 5%
C3645
2113741F49
10nF 50V
C3531
2111078B49
180pF (not used)
C3646
2113741F29
1.5nF 50V
C3532
2111078B34
47pF
C3651
2113740A67
330pF 5% 50V
C3533
2111078B36
56pF 5%
C3652
2113740F33
18pF 5% 50V
C3534
2111078B16
13pF 5%
C3653
2111078B59
470pF 5%
C3535
2111078B38
68pF 5% (not used)
C3654
2113740F47
68pF 5% 50V
ne
33nF 50V
330pF 5% 50V
8.
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yr
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C3501
16
Circuit
Ref
C3551
2111078B27
30pF 5%
C3655
2113741F25
1nF 50V
C3552
2111078B34
47pF 5%
C3657
2113740F32
16pF 5% 50V
C3553
2111078B29
33pF 5%
C3658
2113741F25
1nF 50V
C3554
2111078B21
20pF 5%
D3551
4802482J02
DIODE PIN MA/COM
C3555
2111078B07
5.6pF 0.25%
D3601
4813832B35
DIODE TRANSORB
C3601
2380090M24
10uF 50V 20%
D3651
4802482J02
DIODE PIN MA/COM
C3602
2113741A57
33nF 50V
D3657
4813825A05
DIODE CHIP SCHOTTKY
C3603
2113741F49
10nF 50V
J3501
0905902V01
C3604
2113741F17
470pF 50V
PWR Connector 2 PIN
(not used)
C3605
2311049A45
TANT CP 10uF 10V 35%
J3601
0905901V02
BNC Connector (not
used)
5-79
VHF Main Board - Power AmpliÞer 5-25W
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
2462587T12
COIL CHIP 56nH
R3526
0680194M07
18 1W 5%
L3511
2460591C23
Square Coil 16nH 3T
R3527
0680194M07
18 1W 5%
L3521
2460591C23
Square Coil 16nH 3T
R3551
0662057A73
10k 1/16W 5%
L3522
2484657R01
Ferrite Bead
R3611
0680149M02
Thermistor 100K @25C
L3523
2460591A01
Square Coil 4.22nH 3T
(not used)
R3614
0662057A89
47k 1/16W 5%
R3615
0662057A49
1k 1/16W 5%
L3531
2460591X01
Coil Square
R3616
0680194M01
10 1W 5%
L3532
2460591L29
Coil Air Wound Inductor
16.03
R3617
0680194M01
10 1W 5% (not used)
L3533
2460591M77
Coil Air Wound Inductor
38.13
R3631
0680194M01
R3641
0662057A49
R3642
0662057A56
2k 1/16W 5%
R3643
0662057A49
1k 1/16W 5% (not used)
R3644
0662057A37
330 1/16W 5%
R3645
0662057C19
4R7 1/10W 5%
R3646
0662057C19
4R7 1/10W 5%
R3647
0662057A56
2k 1/16W 5%
R3648
0662057A25
100 1/16W 5%
R3649
0662057A49
1k 1/16W 5%
R3651
0662057A73
10k 1/16W 5%
R3657
0683962T51
120 1W 5%
R3658
0662057A97
100k 1/16W
SH3501
2602642Y01
Heatspreader
Coil Square
L3552
2460591W04
Coil Square
L3601
2484657R01
Ferrite Bead
L3621
2484657R01
Ferrite Bead (not used)
L3622
2484657R01
Inductor Bead Chip
L3623
2460591A01
Coil Square 4.22nH (not
used)
L3631
2484657R01
Ferrite Bead
L3641
2462587T17
COIL CHIP 150nH
L3651
2460591W04
Coil Square
L3652
2462587T30
COIL CHIP 1uH
Q3511
4813827A26
Q3521
4813827A36
Q3531
4880225C22
w
://
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UHF N-CH FET 3W_5003
TSTR NPN
4813824A17
TSTR PNP SOT
4880048M01
R3501
0662057A01
10 1/16W 5%
R3502
0662057A25
100 1/16W 5%
R3503
0662057A01
10 1/16W 5%
R3511
0683962T51
120 1W
R3513
0662057A01
10 1/16W 5%
R3525
0680194M07
18 1W 5%
Q3643
5-80
ne
8.
TSTR RF PWR (not used)
4880214G02
Q3642
1k 1/16W 5%
ht
tp
Q3641
TSTR RF NPN
10 1W 5%
16
2460591W04
.m
yr
ad
L3551
t
L3501
io
Circuit
Ref
VHF Synthesizer Schematic Diagram
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6
8
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VHF Synthesizer Schematic Diagram
5-81
VHF Main Board - Synthesizer
VHF Main Board Synthesizer
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F51
100pF 5% 50V
E3702
2605915V01
SHLD PCB MOUNT
C3702
2113741F13
330pF 50V
R3701
0662057C61
270 1/16W 5%
C3703
2113743E20
0.1uF 10V
R3702
0662057C61
270 1/16W 5%
C3704
2113741F49
10nF 50V
R3703
0662057A49
C3705
2113741F49
10nF 50V
R3705
0662057A89
C3706
2113743E20
0.1uF 10V
R3708
0662057B47
0 1/16W
C3707
2113741F49
2113743E07
10nF 50V (12.5kHz)
22nF (20/25kHz)
R3709
0662057A01
10 1/16W 5%
R3711
0662057A25
100 1/16W 5%
C3708
2113740F59
220pF 5% 50V (12.5kHz)
(not used)
R3712
0662057A59
2k7 1/16W 5%
C3709
2113743E20
0.1uF 10%
C3710
2113740F43
C3711
ne
t
C3701
16
Circuit
Ref
1k 1/16W 5%
0662057A47
0662057A56
820 1/16W 5% (12.5kHz)
2k 1/16W 5% (25kHz)
47pF 5% 50V (20/25kHz)
(not used)
R3714
0662057B02
150k 1/16W
2311049A63
R3715
0662057A41
470 1/16W
C3712
2311049J26
R3716
0662057A49
1k 1/16W
C3713
2113741F25
1nF 50V
R3717
0662057A25
100 1/16W 5%
C3715
2113740F39
33pF 5% 50V
R3718
0662057A25
100 1/16W 5%
C3716
2113743E20
0.1uF 10%
R3723
0662057A73
10k 1/16W 5%
C3717
2113743E20
0.1uF 10%
R3724
0662057B16
560k 1/16W 5%
C3718
2113743E20
0.1uF 10%
U3701
5105457W72
FRAC-N QFP
C3719
2311049A19
VR3701
4813830A23
10V 5% 20mA 350mW
C3720
2113741F49
10nF 50V
Y3701
4802081B71
C3722
2311049A07
1uF 10% 16V
Crystal Quartz 16.8 MHZ
TEMPUS (20/25kHz)
(not used)
C3723
2109720D14
100nF
Y3702
4809863M01
C3725
2109720D14
100nF
TEMPUS (12.5kHz)
C3726
2113741F49
10nF 50V
C3727
0811051A19
1uF 5%
D3701
4802233J09
Triple SOT143-RH
(12.5kHz)
D3702
4805649Q04
Diode Varactor
(20/25kHz) (not used)
ht
tp
://
w
w
R3713
w
.m
yr
ad
io
8.
47k 1/16W 5%
5-83
ht
tp
://
w
w
w
.m
yr
ad
io
16
8.
ne
t
VHF Main Board - Synthesizer
5-84
VHF Voltage Controlled Oscillator Schematic Diagram
L3742
F
1uH
9V3_1_4
C3733
9V3_4
9V3
C3734
R3731
9V3
R3740
C
8.2pF
68
1.5pF
22
Ud
L3731
C3731
.001uF
C3743
0.1uF
68nH
R3742
39
C3744
.001uF
K9V1_4
K9V1
5V_STAB
D3731
C3736
D
C3738
C3739
10pF
L3734
T45
D3739
L3732
C3745
470pF
L3761
68nH
C3767
.01uF
27pF
L3752
T44
D3751
C3755
10pF
D3754
C3758
.001uF
Q3751
R3751 S
27K
R3753
100
C3757
470pF
1
6
8
.
n
L3751
1uH
D3752
C3751
.01uF
39
G
d
i
o
C3754
C3756
10pF
39
C3773
12pF
C3774
10pF
C3781
.01uF
R3778
2.7K
L3781
22nH
TP3732
L3783
120nH
C3777
C3785
10pF
Q3780
470pF
R3777
150
R3775
270
.001uF
R3779
1.5K
R3782
100
C3783
39pF
C3784
10pF
NU
R3785
EXCITER_PA_4
10
C3786
10pF
NU
EXCITER_PA
R3786
150
C3782
100pF
w
.m
y
r
a
2
R3754
43pF
C3772
100pF
C3762
5.6pF
D
L3750
1uH
R3767
270
R3776
470pF
R3772
100
w
2.2K
Ud
C3752
R3769
1K
R3762
470
Q3752
4
3
100pF
Q3760
R3752
B
Q3770
22
R3765
270
56nH
C3766
R3766
12pF
R3761
1.5K
R3743
Q3742
4.7K
2DTC143ZK
C3775
L3773
C3765
Ud
1
L3768
120nH
5.6pF
L3741
1uH
C3761
6.8pF
5
R3768
2.7K
:/
/
w
C3740
12pF
R3771
150
.01uF
C3764
D3733
R3781
100
C3763
R3739 S
27K
R3741
68
1uH
C3735
470pF
C3771
R3763
150
U3741
0.1uF
33pF
56pF
L3733
1uH
D
G
h
tt p
D3732
C3780
9V3
33pF
C3737
R3774
10
5V_STAB
C3792
.01uF
R3791
270
C3791
L3754
1uH
Q3790
C3790
3.9pF
NU
R3792
2.7K
.01uF
C3793
R3795
270
470
R3793
1K
VCO_MIXER_4
VCO_MIXER
R3794
51
e
t
E
0102725B17
U3801
9V3
LP2951CM
8 INPUT
OUTPUT
7 FEEDBACK ERROR
R3801
22
3
C3801
.220uF
SHUTDOWN SENSE
5V_TAP
GND
4
5V_STAB_4
1
5
2
6
5V_STAB (SOURCE)
C3802
.022uF
C3803
10uF
E3731
E3732
GEPD5440-1
VHF Voltage Controlled Oscillator Schematic Diagram
5-85
VHF Main Board - Voltage Controlled Oscillator
VHF Main Board Voltage Controlled Oscillator
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113741F25
1nF 50V
C3774
2113740F27
10pF 5% 50V
C3733
2113740F25
8.2pF 5% 50V
C3775
2113741F17
470pF 50V
C3734
2113740F07
1.5pF 5% 50V
C3777
2113741F17
470pF 50V
C3735
2113741F17
470pF 50V
C3780
2113741F25
C3736
2113740F39
33pF 5% 50V
C3781
2113741F49
C3737
2113740F45
56pF 5% 50V
C3782
2113740F51
100pF 50V
C3738
2113740F39
33pF 5% 50V
C3783
2113740F41
39pF 5%
C3739
2113740F27
10pF 5% 50V
C3784
2113740F27
10pF 5%
C3740
2113740F29
12pF 5% 50V
C3785
2113740F27
10pF 5% 50V
C3743
2113743K15
100nF 16V
C3744
2113741F25
1nF 50V
C3745
2113741F17
470pF 50V
C3751
2109720D01
C3752
ne
t
C3731
16
Circuit
Ref
1nF 50V
.m
yr
ad
io
8.
10nF 50V
2113741F49
10nF 50V
C3792
2113741F49
10nF 50V
C3793
2113741F49
10nF 50V
LOW DIST 10nF
C3801
2113743A23
220nF 16V
2113740F42
43pF 5% 50V
C3802
2113743E07
22nF 16V
C3754
2113740F37
27pF 5% 50V
C3803
2311049A63
C3755
2113740F27
10pF 5% 50V
D3731
4805649Q13
VCTR 1SV228 SOT23
C3756
2113740F27
10pF 5% 50V
D3732
4805649Q13
VCTR 1SV228 SOT23
C3757
2113741F17
470pF 50V
D3733
4805649Q13
VCTR 1SV228 SOT23
C3758
2113741F25
1nF 50V
D3739
4813825A05
SCHOTTKY
ht
tp
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w
C3791
C3761
2113740F23
6.8pF 5% 50V
D3751
4805649Q13
VCTR 1SV228 SOT23
C3762
2113740F21
5.6pF 5% 50V
D3752
4805649Q13
VCTR 1SV228 SOT23
C3763
2113741F49
10nF 50V
D3754
4813825A05
SCHOTTKY
C3764
2113740F21
5.6pF 5% 50V
E3731
2602641Y02
SHIELD VCO
C3765
2113740F29
12pF 5% 50V
E3732
2605915V01
SHLD PCB MOUNT
C3766
2113740F51
100pF 5% 50V
L3731
2462587T13
COIL CHIP 68nH
C3767
2113741F49
10nF 50V X7R
L3732
2462587T30
COIL CHIP 1uH
C3771
2113743K15
100nF 16V
L3733
2462587T30
COIL CHIP 1uH
C3772
2113740F51
100pF 50V
L3734
0105950T45
Helical Molded FIN .175
C3773
2113740F29
12pF 5% 50V
L3741
2462587T30
COIL CHIP 1uH
5-87
VHF Main Board - Voltage Controlled Oscillator
Motorola
Part No.
Circuit
Ref
Motorola
Part No.
Description
2462587T30
COIL CHIP 1uH
R3767
0662057C61
270 1/16W 5%
L3750
2462587T30
COIL CHIP 1uH
R3768
0662057A59
2k7 1/16W 5%
L3751
2462587T30
COIL CHIP 1uH
R3769
0662057A49
1k 1/16W 5%
L3752
0105950T44
Helical Molded FIN .175
R3771
0662057A29
150 1/16W 5%
L3754
2462587T30
COIL CHIP 1uH
R3772
0662057A25
100 1/16W 5%
L3761
2462587T13
COIL CHIP 68nH
R3774
0662057A01
10 1/16W 5%
L3768
2462587T16
COIL CHIP 120nH
R3775
0662057C61
270 1/16W 5%
L3773
2462587T12
COIL CHIP 56nH
R3776
0662057A15
39 1/16W 5%
L3781
2462587T38
COIL CHIP 22nH
R3777
0662057A29
L3783
2462587T16
COIL CHIP 120nH
R3778
0662057A59
Q3742
4805921T09
XSTR DUAL ROHM
FMG8
R3779
0662057A53
1k5 1/16W 5%
R3781
0662057A25
100 1/16W 5%
Q3751
4813823A05
N-CH RF JFET
MMBU310LT1
R3782
0662057A25
100 1/16W 5%
Q3752
4880214G02
NPN 40V .2A
R3785
0662057A01
10 1/16W 5%
Q3760
4813827A07
NPN SML SIG MMBR9
R3786
0662057A29
150 1/16W 5%
Q3770
4813827A07
NPN SML SIG MMBR9
R3791
0662057C61
270 1/16W 5%
Q3780
4813827A07
NPN SML SIG MMBR9
R3792
0662057A59
2k7 1/16W 5%
Q3790
4813827A07
NPN SML SIG MMBR9
R3793
0662057A49
1k 1/16W 5%
R3731
0662057A21
68 1/16W 5%
R3794
0662057A18
51 1/16W 5%
R3739
0662057A83
27k 1/16W 5%
R3795
0662057A41
470 1/16W 5%
R3740
0662057A09
22 1/16W 5%
R3801
0662057A09
22 1/16W 5%
R3741
0662057A21
68 1/16W 5%
U3741
4813823A05
XSTR N-CH RF JFET
R3742
0662057A15
39 1/16W 5%
U3801
5105469E65
IC VLTG REGLTR
0662057A57
2k2 1/16W 5%
R3753
0662057A25
100 1/16W 5%
R3754
0662057A15
39 1/16W 5%
R3761
0662057A53
1k5 1/16W 5%
R3762
0662057A41
470 1/16W 5%
R3763
0662057A29
150 1/16W 5%
R3765
0662057C61
270 1/16W 5%
R3766
0662057A09
22 1/16W 5%
R3751
5-88
0662057A65
4k7 1/16W 5%
0662057A83
27k 1/16W 5%
ne
150 1/16W 5%
2k7 1/16W 5%
16
.m
yr
ad
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R3752
R3743
t
L3742
8.
Description
io
Circuit
Ref
VHF RX-FE Schematic Diagram
h
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8
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n
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t
VHF RX-FE Schematic Diagram
5-89
VHF Main Board - RX-FE
VHF Main Board RX-FE
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113741F37
3.3nF 50V
D3304
4805649Q13
VCTR 1SV228 SOT23
C3301
2113740F19
4.7pF 5% 50V
D3331
4880174R01
QUAD SOIC 8 PIN
C3302
2113740F24
7.5pF 5% 50V
L3302
2462587T23
COIL CHIP 470nH
C3303
2113741F37
3.3nF 50V
L3331
2462587T23
C3304
2113740F45
56pF 5% 50V
L3332
2462587T17
C3305
2113740F51
100pF 5% 50V
L3333
2462587T38
COIL CHIP 22nH 5%
C3306
2113740F39
33pF 5% 50V
L3334
2462587T38
COIL CHIP 22nH 5%
C3307
2113741F37
3.3nF 50V
Q3301
4813827A07
NPN SML SIG MMBR9
C3308
2113741F25
1nF 50V
Q3302
4813824A17
XSTR PNP 40V 0.2A
C3309
2113741F13
330pF 50V
C3310
2113741F13
330pF 50V
C3311
2113741F37
3.3nF 50V
C3312
2113741F25
1nF 50V
C3313
2113740F45
56pF 5% 50V
C3314
2113740F24
7.5pF 5% 50V
C3315
2113740F45
C3316
ne
t
C3300
16
Circuit
Ref
COIL CHIP 470nH
0662057A53
1k5 1/16W 5%
R3301
0662057A97
100k 1/16W
R3302
0662057A37
330 1/16W 5%
R3303
0662057A49
1k 1/16W 5%
R3304
0662057A53
1k5 1/16W 5%
R3306
0662057C61
270 1/16W 5%
56pF 5% 50V
R3307
0662057A21
68 1/16W 5%
2113740F51
100pF 5% 50V
R3308
0662057C61
270 1/16W 5%
C3317
2113740F42
43pF 5% 50V
R3309
0662057A97
100k 1/16W
C3319
2113741F25
1nF 50V
R3311
0662057A63
3k9 1/16W 5%
://
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R3300
ht
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.m
yr
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io
8.
COIL CHIP 150nH
C3320
2113741F25
1nF 50V
R3312
0662057A53
1k5 1/16W 5%
C3321
2113740F51
100pF
R3313
0662057A61
3k3 1/16W 5%
C3322
2113741F49
10nF 50V
R3314
0662057A07
18 1/10W 5%
C3331
2113740F29
12pF 5% 50V
R3315
0662057A01
10 1/10W 5%
C3332
2113740F37
27pF 5% 50V
R3316
0662057A29
150 1/16W 5%
C3333
2113740F42
43pF 5% 50V
R3317
0662057A29
150 1/16W 5%
C3334
2113740F49
82pF 5% 50V
R3318
0662057A13
33 1/16W 5%
D3300
4813833C02
DUAL SOT MMBD6100
R3321
0662057C61
270 1/16W 5%
D3301
4805649Q13
VCTR 1SV228 SOT23
R3331
0662057A18
51 1/16W 5%
D3303
4880154K03
Dual Schottky SOT23
5-91
VHF Main Board - RX-FE
Circuit
Ref
Motorola
Part No.
Description
2505515V03
XFMR JEDI MIXER SMD
4:1
T3302
2505515V03
XFMR JEDI MIXER SMD
4:1
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yr
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8.
ne
t
T3301
5-92
VHF RX-IF Schematic Diagram
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6
8
.
n
e
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VHF RX-IF Schematic Diagram
5-93
VHF Main Board - RX-IF
VHF Main Board RX-IF
Circuit
Ref
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113740F35
22pF 5% 50V
C5237
2113743K15
100nF 16V
C5201
2113740F19
4.7pF 5% 50V
C5238
2113743K15
100nF 16V Y5V
C5202
2113740F31
15pF 5% 50V
C5239
2113740F44
51pF 5% 50V
C5203
2113743A19
100nF 16V X7R
D5201
4880154K03
C5204
2113743A19
100nF 16V X7R
FL5201
9180098D04
C5205
2113740F33
18pF 5% 50V
C5208
2113743A19
100nF 16V
C5211
2113740F31
15pF 5% 50V
C5212
2113740F31
15pF 5% 50V
C5213
2113740F40
36pF 5% 50V
C5214
2113740F17
3.9pF 5% 50V
C5220
2113741F49
10nF 50V
C5221
2311049J25
C5222
2113743K15
100nF 16V
C5223
2113743E20
100nF 16V
C5224
2113741F29
1.5nF 50V
C5225
2311049J11
C5226
2113743K07
2113743K15
47nF 16V (12.5kHz)
100 nF 16V (20/25kHz)
C5227
2311049J11
C5228
ne
Dual Schottky SOT23
(12.5kHz)
Filter CER 3WR
(20/25kHz)
8.
16
9180098D06
9180097D04
io
FL5202
t
C5200
.m
yr
ad
9180097D06
(12.5kHz)
Filter CER 6-EL
(20/25kHz)
2462587N69
CHIP IND 1200 NH
L5203
2483411T74
L5211
2483411T74
Q5201
4813827A07
Transistor NPN
R5201
0662057A73
10k 1/16W 5%
R5202
0662057A85
33k 1/16W 5%
R5203
0662057A69
6k8 1/16W 5%
R5204
0662057A25
100 1/16W 5%
R5205
0662057A56
2k 1/16W 5%
R5207
0662057B47
0 1/16W
2113743K15
100nF 16V
R5211
0662057A47
820 1/16W 5%
C5229
2113741F41
2113741F25
4.7nF 50V (12.5kHz)
1nF 50V (20/25kHz)
R5212
0662057A67
5k6 1/16W 5%
R5216
C5230
2113741F49
10nF 50V
0662057A73
0662057A69
10k 1/16W 5% (12.5kHz)
6k8 1/16W 5% (20/25kHz)
C5231
2311049A07
TANT CP 1uF 10% 16V
R5221
0662057B02
0662057B05
C5232
2113740F51
100pF 5% 50V
150k 1/16W (12.5kHz)
200k 1/16W 5%
(20/25kHz)
C5233
2113740F51
100pF 5% 50V
R5222
0662057A93
68k 1/16W 5%
C5234
2113743K15
100nF 16V
R5223
C5235
2113740F51
100pF 5% 50V
0662057A69
0662057A63
6k8 1/16W 5% (12.5kHz)
3k9 1/16W 5% (20/25kHz)
C5236
2113740F51
100pF 5% 50V
R5224
0662057A76
13k 1/16W 5%
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L5201
5-95
VHF Main Board - RX-IF
Motorola
Part No.
Description
R5225
0662057A25
0662057A61
100 1/16W 5% (12.5kHz)
3k3 1/16W 5% (20/25kHz)
U5201
5180207R01
IF IC
Y5201
9102651Y01
XTAL FLTR 45.1MHZ
12.5KHz 80dB
XTAL FLTR 45.1MHZ
20/25KHz 80dB
9102651Y02
9102652Y02
4802653Y01
XTAL OSC 44.645MHZ
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yr
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16
Y5211
XTAL FLTR 45.1MHZ
12.5KHz 60dB
XTAL FLTR 45.1MHZ
20/25KHz 80dB
t
Y5202
ne
9102652Y01
8.
Circuit
Ref
5-96
Control Head K
D0843
D0868
D0866
D0867
D0842 D0841
D0844
D0847
D0863
D0862
D0846
D0845
:/
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D0864
D0848
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J0803
D0861
D0865
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D0825
R0813
C0826
R0814
R0850
R0818
Q0846
Q0862
R0862
U0841
R0842
R0853 Q0847
R0854
R0817
R0845
R0864
Q0861
R0861
R0863
C0842
R0855
R0856
R0816
Q0843
R0812
R0811
R0846
R0843
VR0801
Q0842
R0844
VR0803 VR0804
R0847 Q0844
R0801
VR0807
R0849Q0845 R0851
R0852
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C0805
C0811
Q0841
Q0848
VR0806
C0825
C0803
C0815
J0801
R0841
C0841
1
6
8
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VR0809
C0806
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Control Head ÔKÕ
Component Side
C0801
R0848
R0825 Q0825
R0815
R0826
R0802
VR0802 VR0805
C0802
J0802
Control Head ÔKÕ
Solder Side
Control Head K
PCB No. 8480573Z01
5-97
Control Head K Schematic Diagram
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3 1
2
2
1
3
4
3
6
5
6
5
1
2
1
1
2
1
2
4
3
4
3
4
3
4
3
6
5
6
5
6
5
6
5
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6
8
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1
Control Head K Schematic Diagram
5-99
Main Board - Control Head K
Main Board Control Head K
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113741F17
470pF 50V X7R
R0845
0662057A89
RES CHP 47k 1/16W 5%
C0802
2113741F17
470pF 50V X7R
R0846
0662057A41
RES CHP 470 1/16W 5%
C0841
2113743K15
100nF 16V Y5V
R0847
0662057A89
C0842
2311049J23
TANT 10uF 10% 6V
R0848
0660076A35
D0825
4813833C02
DUAL SOT MMBD6100
R0849
0662057A89
D0841
4805729G73
LED SMT YEL HP
R0850
0660076A35
RES CHIP 270 5 1/8
D0842
4805729G73
LED SMT YEL HP
R0851
0662057A89
D0843
4805729G74
LED SMT RED HP
R0852
0660076A35
RES CHIP 270 5 1/8
D0844D0848
4805729G75
LED SMT GREEN HP
R0853
0662057A89
R0854
0660076A35
RES CHIP 270 5 1/8
D0861D0868
4805729G75
LED SMT GREEN HP
R0855
0662057A89
J0801
0902636Y01
CONN Flex Side Entry
R0856
0660076A35
RES CHIP 270 5 1/8
J0802
2809926G01
CONN 1.25MM CTR SUR
R0861
0662057A65
RES CHP 4k7 1/16W 5%
J0803
2805924V01
CONNECTOR MIC
R0862
0662057A65
Q0825
4880048M01
NPN DIG 47k/47k
R0863
0662057A35
RES CHP 270 1/16W 5%
Q0841
4880048M01
NPN DIG 47k/47k
R0864
0662057A35
RES CHP 270 1/16W 5%
Q0842Q0848
4813824A10
NPN 40V .2A B=50-150
U0841
5113806A35
MC14094, REG, 8-Stage,
SHIFT/STOREU
Q0861
4813824A10
NPN 40V .2A B=50-150
VR0801
4813830A14
5.1V 5% 225mW
Q0862
4813824A10
NPN 40V .2A B=50-150
VR0802
4813830A14
5.1V 5% 225mW
R0801
0660076A35
RES CHIP 270 5 1/8
VR0803VR0805
4813830A27
14V 5% 225MW
R0802
0662057A49
RES CHP 1k 1/16W 5%
VR0806
4813830A14
5.1V 5% 225mW
R0811R0818
0662057A65
VR0807
4813830A14
5.1V 5% 225mW
R0825
0662057A65
R0826
0662057A65
R0841
0662057A73
R0842
0662057A89
R0843
0662057A89
R0844
0660076A35
RES CHIP 270 5 1/8
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RES CHIP 270 5 1/8
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C0801
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Circuit
Ref
5-101
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5-102
Control Head P
H0931
D0943
D0964
D0968
D0953
D0957
D0961
D0965
D0969
D0954
D0958
D0962
D0966
D0970
D0956
D0942 D0941
D0944
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D0960
R0902
D0955
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D0952
D0959
D0967
D0963
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Control Head ÔPÕ
Component Side
D0925
1
6
8
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C0926
C0906
C0925
C0903
C0904
R0942
R0920
R0941
R0947
R0919
C0942
R0948
U0941
R0917 R0916
VR0904 C0901VR0901
R0901
R0943
Q0952
R0926R0925
Q0925
R0918
Q0951
R0954
VR0905
R0951
R0953
R0952
R0915
VR0903
C0902
J0902
J0901
C0941
VR0902
VR0907
C0905
U0932
R0914
R0944
R0921 Q0942
Q0941
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VR0906
VR0908
R0911
R0922
Q0944
C0911
C0915
R0912
Q0943
R0913
C0935
C0934 R0933
VR0909
R0945
R0946
Control Head ÔPÕ
Solder Side
Control Head P
PCB No. 8480479Z01
5-103
Control Head P Schematic Diagram
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2
3
2
1
2
1
2
3
4
3
4
3
4
6
5
6
5
B33
B32
B31
B28
B27
B29
B30
B26
B25
B24
B23
B22
B21
B20
B17
B18
B19
B14
B15
B16
B12
B13
B11
B10
B7
B9
B8
B6
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3
5
6
5
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6
8
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2
4
B5
5
B4
6
B1
5
1
B3
3
6
1
B2
4
BP I
2
3
BPO
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Control Head P Schematic Diagram
5-105
Main Board - Control Head P
Main Board Control Head P
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
2113741F17
470pF 50V
R0925
0662057A65
4k7 1/16W 5%
C0902
2113741F17
470pF 50V
R0926
0662057A65
4k7 1/16W 5%
C0934
2113743K15
100nF 16V
R0931
0662057A65
4k7 1/16W 5%
C0935
2113741F49
10nF 50V
R0932
0662057A73
C0941
2113743K15
100nF 16V
R0933
0662057A97
C0942
2311049J23
TANT CP 10uF 10% 6V
R0941
0662057A73
10k 1/16W 5%
D0925
4813833C02
DIODE DUAL SOT
MMBD6100
R0942
0662057A89
47k 1/16W 5%
R0943
0662057A89
47k 1/16W 5%
D0941
4805729G73
LED SMT YEL
R0944
0660076A35
270 5 1/8
D0942
4805729G73
LED SMT YEL
D0943
4805729G74
LED SMT RED
D0944
4805729G75
LED SMT GREEN
D0951D0970
4805729G75
LED SMT GREEN
H0931
7202631Y01
J0901
0902636Y01
CONN FLEX Side Entry
J0902
2809926G01
J0903
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Circuit
Ref
10k 1/16W 5%
0662057A89
47k 1/16W 5%
R0946
0662057A41
470 1/16W 5%
R0947
0662057A89
47k 1/16W 5%
R0948
0660076A35
270 5 1/8
CNTL K DISPLAY
R0952
0662057A80
20k 1/16W 5%
R0953
0662057A73
10k 1/16W 5%
CONN 1.25MM CTR SUR
R0954
0680194M01
10 1W 5%
2805924V01
CONNECTOR MIC
U0932
5105625U61
LCD DRIVR 33 SEGMENT STATIC
Q0925
4880048M01
NPN DIG 47k/47k
U0941
5113806A35
Q0931
4805128M16
PNP SOT MMBT3906
MC14094, REG, 8STAGE,SHIFT/STOREU
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100k 1/16W
Q0941
4880048M01
NPN DIG 47k/47k
VR0901
4813830A14
5.1V 5% 225mW
Q0942
4813824A10
NPN 40V .2A B=50-150
VR0902
4813830A14
5.1V 5% 225mW
Q0943
4813824A10
NPN 40V .2A B=50-150
VR0903
4813830A27
14V 5% 225MW MMB
Q0944
4813824A10
NPN 40V .2A B=50-150
VR0904
4813830A27
14V 5% 225MW MMB
Q0951
4813824A10
NPN 40V .2A B=50-150
VR0905
4813830A27
14V 5% 225MW MMB
Q0952
4813822A20
VR0906
4813830A14
5.1V 5% 225mW
R0901
0660076A35
270 5 1/8
VR0907
4813830A14
5.1V 5% 225mW
R0902
0662057A49
1k 1/16W 5%
VR0908
4813830A14
5.1V 5% 225mW
R0911R0922
0662057A65
4k7 1/16W 5%
5-107
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5-108
Table of Contents
Chapter 6
216-246MHz Specific Information
Model Chart and Technical Specifications
6.2
6.3
Theory of Operation
6.4
PCB/Schematic Diagrams and Parts Lists
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8.
Chapter
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Table of Contents
6-i
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6-ii
Table of Contents
Chapter 6.1
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Paragraph
Page
Overview ..................................................................................................... 1
2.0
Model Chart ................................................................................................ 1
3.0
Technical Specifications ........................................................................... 2
3.1
3.2
3.3
General ........................................................................................................ 2
Transmitter................................................................................................... 2
Receiver....................................................................................................... 3
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6.1-ii
Overview
1.0
Overview
This chapter lists the 216-246 MHz models and technical specifications available for the GM950i
mobile radio.
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GM950i 216-223MHz 20/25 kHz 5W D
AZM08MFF6AA2AN
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GM950i 245-246MHz 12.5 kHz 10W D
AZM08MFF4AA3AN
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GM950i 245-246MHz 20/25 kHz 10W D
AZM08MFF6AA3AN
X = Indicates one of each required
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GM950i 220-240MHz 20/25 kHz 10-25W D
AZM08MHF6AA2AN
GM950i
216-246 MHz
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Description
Model Chart
Model
2.0
Item
X
X
X
X
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6.1
X
X
X
X
X
X
PMBN4039_
Description
Packaging Kit
GCN6103_
X
X
GCN6105_
X
X
GLN7324_
Low Profile Trunnion Kit
X
GMN6146_
Enhanced Compact Microphone
X
PMUE1609A
GM950i 245-246MHz 20/25kHz Tanapa
PMUE1610A
PMUE1611A
GM950i 245-246MHz 12.5kHz Tanapa
X
PMUE1612A
Power Cable
GM950E/GM950i User Guide
X
X
X
X
X
X
X
GKN6270_
X
X
X
X
6804111J35
6.1-1
Technical Specification
General
216-246 MHz
Channel Spacing
12.5 or 20/25 kHz
Frequency Stability
±3ppm
Power Supply
10.8 to 15.6V dc, negative earth
Dimensions
44x168x160 mm (HxWxD)
Weight
1030g
Operational Temperature
- 25°C to + 55°C
Storage Temperature
- 40°C to + 85°C
Antenna Connection
50Ω BNC
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Vibration IEC 68/2/27 and Shock IEC 28/2/6
European Dust & Water protection IP54
ETS300-086 RF Specifications
ETS300-113 Cyclic Keying Requirements
ETS300-279 EMC Requirements
ETS300-219 Signalling
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- Electrical
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Transmitter
SPECIFICATION ITEM
TYPICAL VALUE
Channel Spacing
12.5 or 20/25 kHz
Output Power
5-25W
Modulation Limiting
<±2.5kHz (12.5kHz); <±4kHz (20kHz);
<±5kHz (25kHz)
FM hum & noise (CCITT)
>40dB (12.5kHz); >45dB (25kHz) CCITT
Conducted/Radiated Emission
<0.25uW (0.1...1000MHz); <1uW (1...4GHz)
Adjacent Channel Power
<-60dB (12.5kHz); <-70dB (25kHz)
Flat or pre-emphasised
Audio Distortion
<5% @ 1kHz, 60% deviation
Transmit turn on time
<25msec
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Frequency Range
Environmental
- Mechanical
3.2
TYPICAL VALUE
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SPECIFICATION ITEM
8.
3.1
16
3.0
3.3
Receiver
SPECIFICATION ITEM
TYPICAL VALUE
Channel Spacing
12.5 or 20/25 kHz
Sensitivity @ 12.5 kHz
Sensitivity @ 25 kHz
Intermodulation
>65dB ETS; >70dB with Base Option
Adjacent Channel Selectivity
>60dB (12.5kHz); >70dB (20/25kHz)
Spurious Rejection
>70dB ETS
Audio Distortion @ Rated Audio
<5%
Hum and Noise (CCITT)
>40dB (12.5kHz); >45dB (20/25kHz) CCITT
Flat or De-Emphasised
Co-channel Rejection
<12dB (12.5kHz) , <8dB (20/25kHz) ETS
Conducted /Radiated Emission
<2nW (0,1..1000MHz); <20nW (1..4GHz)
Receive after transmit time
<25msec
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6.1-3
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Table of Contents
Chapter 6.2
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Page
216-246 MHz Tuning Procedure ................................................................ 1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
General ........................................................................................................
PA Bias Voltage...........................................................................................
Battery Threshold ........................................................................................
Transmitter Power .......................................................................................
Reference Oscillator ....................................................................................
Front-End Filter............................................................................................
Rated Volume ..............................................................................................
Squelch........................................................................................................
Transmit Deviation Limit ..............................................................................
Transmit Modulation Balance (Compensation)............................................
1
3
3
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4
5
6
6
7
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6.2-ii
216-246MHz Tuning Procedure
1.0
1.1
General
The recommended hardware platform is a 386 or 486 DX 33 PC (personal computer) with 8 MBytes
RAM, MS-DOS™ 5.0, Windows™3.1, and RSS (Radio Service Software). These are required to
align the radio. Refer to your RSS Installation Manual for installation and setup procedures for the
required software; the user manual is accessed (and can be printed if required) via the RSS.
SERVICE MONITOR
OR COUNTER
8.
30 dB PAD
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To perform the alignment procedures, the radio must be connected to the PC, RIB (Radio Interface
Box), and Universal Test Set as shown in figure 6.2-1.
TRANSMIT
WATTMETER
16
30 dB PAD
RF GENERATOR
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AUDIO IN
TX
AUDIO GENERATOR
TEST SET
RTX-4005B/
GTF180B
RADIO
MIC IN
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BNC
RX
TEST CABLE
GTF-376A
SINAD METER
AC VOLTMETER
Note: Battery can be used in RIB
making power supply optional
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25PIN
COMPUTER
15PIN
DATA
RIB
RLN-4008B
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PROGRAM/
TEST CABLE
GTF-374A
GND
COMPUTER INTERFACE CABLE
30-80369B72 (IBM "AT" 9PIN ONLY)
30-80369B71 (IBM "XT" 25PIN ONLY)
RIB POWER SUPPLY
EPN4041A (230 VAC. Euro)/
EPN4040A (230 VAC. UK)
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6.2
Figure 6.2-1 Radio Alignment Test Setup.
All tuning procedures are performed from the Service menu.
Before going into the Service menu, the radio must first be read using the File / Read Radio menu (if
the radio has just been programmed with data loaded from disk or from a newly created codeplug,
then it must still be read so that the RSS will have the radio’s actual tuning values).
All Service windows read and program the radio codeplug directly; you do NOT have to use the RSS
Read Radio / Write Radio functions to program new tuning values.
6.2-1
CAUTION:
DO NOT switch radios in the middle of any Service procedure. Always use the
Program or Cancel key to close the tuning window before disconnecting the radio.
Improper exits from the Service window may leave the radio in an improperly
configured state and result in seriously degraded radio or system performance.
The Service windows introduce the concept of the “Softpot”, an analog SOFTware controlled
POTentiometer used for adjusting all transceiver alignment controls. A softpot can be selected by
clicking with the mouse at the value or the slider or by hitting the TAB key until the value or the slider
is highlighted.
8.
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Each Service window provides the capability to increase or decrease the ‘softpot’ value with the
mouse, the arrow keys or by entering a value with the keyboard. The window displays the minimum,
maximum, and step value of the softpot. In addition transmitter tuning windows indicate the
transmitter frequency and whether the radio is keyed.
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Adjusting the softpot value sends information to the radio to increase (or decrease) a DC voltage in
the corresponding circuit. For example, increasing the value in the Reference Oscillator tune window
instructs the radio microprocessor to increase the voltage across a varactor in the reference
oscillator to increase the frequency. Clicking the Program button stores all the softpot values of the
current window permanently in the radio.
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In ALL cases, the softpot value is just a relative number corresponding to a D/A (Digital-to-Analog)
generated voltage in the radio. All standard measurement procedures and test equipment are
similar to previous radios.
Refer to the RSS on-line help for information on the tuning software.
Perform the following procedures in the sequence indicated.
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All tuning procedures must be performed at a supply voltage of 13.2V unless otherwise
stated. The Modulation Analyser to measure the deviation should be set to frequency
modulation with de-emphasis switched off and all high pass filters switched off.
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Note:
6.2-2
1.2
PA Bias Voltage
Adjustment of the PA Bias is critical for proper radio operation. Improper adjustment will result in
poor operation and may damage the PA FET device. For this reason, the PA bias must be set before
the transmitter is keyed the first time.
Note:
For certain radio models there are two bias voltage settings. For these radios both ‘ Bias 1
Voltage ’ and ‘ Bias 2 Voltage ‘ need to be adjusted when aligning the PA Bias. For models
that only have one bias voltage setting, the ‘ Bias 2 Voltage ‘ will be shown in grey on the
service menu.
From the Service menu, select Tx Alignments.
2.
Select Bias Voltage to open the bias voltage tuning window. If the control voltage is out of
range, an error message will be displayed. In this case the radio hardware has a problem and
tuning must be stopped immediately.
3.
Click the Toggle Bias button to set the quiescent current temporarily to 0 mA. The status bar will
indicate that the bias is switched off.
4.
Measure the DC current of the radio. Note the measured value and add the specified quiescent
current shown in table 6.2-1. The result is the tuning target.
5.
Click the Toggle Bias button to switch on the quiescent current again.
6.
Adjust the current per the target calculated in step 4.
7.
Click the Program button to store the softpot value.
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1.
Table 6.2-1 Quiescent Current Alignment.
216-246MHz
150mA±15%
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Target
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1.3
RF-Band
The radio uses 2 battery threshold levels Tx High and Tx Low to determine the battery condition.
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The Program buttons must only be activated when the power supply is set to the indicated voltage. If
the RSS detects that the voltage is not within the expected range for the threshold in question then a
message will be displayed to warn that the radio may not be set up correctly for the alignment
operation.
CAUTION:
Inadvertant Use Of The Program Buttons May Result In Radio Failure.
1.
2.
Select Battery Thresholds to open the battery thresholds tuning window.
3.
Set the supply voltage to the value indicated for Tx High.
4.
Click the Tx High Program button to store the softpot value for Tx High.
5.
Set the supply voltage to the value indicated for Tx Low.
6.
Click the Tx Low Program button to store the softpot value for Tx Low.
7.
Close the window by clicking Cancel.
6.2-3
1.4
Transmitter Power
The radio has two power level settings, a high power level setting, and a low power level setting.
IMPORTANT:
To set the transmitter power for customer applications use the Per Radio window
under the Edit menu and set the “Power 1” and “Power 2” powers to the desired
values. Only if the transmitter components have been changed or the transmitter
does not transmit with the power set in the Per Radio window, should the
following procedure be performed.
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The advanced power setting technology employed in the radio makes use of two reference power
level settings along with parameters describing the circuit behaviour. To determine these parameters
the RSS requires the power values measured for two different settings.
2.
Select RF Power to open the RF power tuning window. The window will indicate the transmit
3.
Select the Point 1 value of the first frequency.
4.
Click the Toggle PTT button to key the radio. The status bar will indicate that the radio is
transmitting.
5.
6.
7.
Select the Point 2 value of the first frequency.
8.
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1.
10. Click the Toggle PTT button to dekey the radio.
11. Repeat steps 3 - 10 for all test frequencies shown in the window.
1.5
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12. Click the Program button to store the softpot values.
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Adjustment of the reference oscillator is critical for proper radio operation. Improper adjustment will
not only result in poor operation, but also a misaligned radio that will interfere with other users
operating on adjacent channels. For this reason, the reference oscillator should be checked every
time the radio is serviced. The frequency counter used for this procedure must have a stability of
0.1ppm (or better).
6.2-4
1.
2.
Select Reference Oscillator to open the reference oscillator tuning window. The tuning window
will indicate the target transmit frequency.
3.
transmitting.
4.
Measure the transmit frequency on your frequency counter.
5.
Adjust the reference oscillator softpot in the tuning window to achieve a transmit frequency
within the limits shown in table 6.2-2.
6.
Click the Toggle PTT button again to dekey the radio and then click the Program button to store
the softpot value.
Table 6.2-2 Reference Oscillator Alignment.
1.6
RF-Band
Target
All bands
±150 Hz
Front-End Filter
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Alignment of the front-end pre-selector is normally not required on these radios. Only if the radio has
poor receiver sensitivity or the pre-selector parts have been replaced the following procedure should
be performed. The softpot value sets the control voltage of the pre-selector. Its value needs to be set
at 7 frequencies across the frequency range. If the radio supports 20 or 25 kHz channel spacing
selection, use the parameters for 25 kHz channel spacing.
Set the test box (GTF180) meter selection switch to the “Audio PA” position and connect a
SINAD meter to the “METER” port.
2.
From the Service menu, select Rx Alignments.
3.
Select Front End Filter to open the pre-selector tuning window. The window will indicate the
receive test frequencies to be used.
4.
Select the first test frequency shown, and set the corresponding value to the start value shown
in table 6.2-4.
5.
Set the RF test generator to the receive test frequency, and set the RF level to 10µV modulated
with a 1kHz tone at the normal test deviation shown in table 6.2-3.
6.
Measure the RSSI voltage at accessory connector pin 15 with a dc voltmeter capable of 1mV
resolution and at least 1Mohm input impedance.
7.
Change the softpot value by the stepsize shown in table 6.2-4 and note the RSSI voltage.The
target softpot value is achieved when the measured RSSI voltage change between step 6 and
step 7 is lower than the tuning target for the first time. The tuning target, shown in table 6.2-4, is
expressed as the percentage of the measured RSSI voltage and must be recalculated for every
tuning step. If the measured RSSI voltage decreases before the target value has been
achieved, approximation should be stopped and the current softpot value should be used as
target value. Set test box (GTF180) audio switch to the “SPKR” position. The 1 kHz tone must
be audible at the target value to make sure the radio is receiving.
8.
Repeat steps 4- 7 for all test frequencies shown in the window.
9.
Click the Program button to store the softpot values.
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8.
1.
Table 6.2-3 Normal Test Deviation.
Channel Spacing
Deviation
12.5 kHz
20 kHz
25 kHz
1.5 kHz
2.4 kHz
3 kHz
Table 6.2-4 Start Value for Front-End Pre-selector Tuning.
RF-Band
Target
Stepsize
Start Value
216-246MHz
0.29%
+4
Minimum
6.2-5
1.7
Rated Volume
The rated volume softpot sets the maximum volume at normal test modulation.
Set test box (GTF180) meter selection switch to the “AUDIO PA” position and the speaker load
switch to the “MAXAR” position. Connect an AC voltmeter to the test box meter port.
2.
3.
Select Rated Volume to open the rated volume tuning window. The screen will indicate the
receive test frequency to be used.
4.
Set the RF test generator to the receive test frequency, and set the RF level to 1mVolt
modulated with a 1kHz tone at the normal test deviation shown in table 6.2-3. Set test box
(GTF180) audio switch to the “SPKR” position. The 1kHz tone must be audible to make sure
the radio is receiving.
5.
Adjust the value of the softpot to obtain rated audio volume (as close to 3.87 Vrms)
Note: The voltage at the meter port of the testbox GTF180 is only half the voltage at the
speaker.
6.
Click the Program to store the softpot value.
8.
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Squelch
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The squelch softpots set the signal to noise ratio at which the squelch opens. The squelch value
needs to be set at 7 frequencies across the frequency range. If the radio supports 20 or 25 kHz
channel spacing selection, the radio stores separate tuning data for 20 kHz and 25 kHz channel
spacing. Therefore, both sets of tuning data should be tuned independently.
Set the test box (GTF180) meter selection switch to the “Audio PA” position and connect a
SINAD meter to the “METER” port.
2.
3.
Select ‘Squelch’ to open the squelch tuning window. This window is used to set the values for
12.5kHz radios and the 25kHz data for 20/25kHz radios. The window will indicate the receive
4.
Select the first test frequency shown, and set the corresponding value to 0.
5.
Set the RF test generator to the test frequency and modulate the signal generator at the normal
test deviation shown in table 6.2-3, with 1kHz tone. Adjust the generator for a 8-10 dB SINAD
level (weighted with psophometric filter).
6.
Adjust the softpot value until the squelch just closes.
7.
Monitor for squelch chatter; if chatter is present, repeat step 6.
8.
When no chatter is detected, select the next softpot and repeat steps 4 - 7 for all test
frequencies shown in the window.
9.
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1.
10. If the radio supports 20 or 25kHz channel spacing selection, repeat steps 2-9 for 20kHz
channel spacing using the ‘Squelch (20kHz)’ window.
6.2-6
1.9
Transmit Deviation Limit
The transmit deviation limit softpot sets the maximum deviation of the carrier. The deviation limit
needs to be set at 7 frequencies across the frequency range. Unlike other radios, the deviation limit
for 216-246MHz is set using low frequency (PL) rather than the usual 1 kHz tone. No audio signal
must be injected, the radio generates a 82.5 Hz tone while the deviation limit alignment window is
open. This tone is used to set the maximum deviation. If the radio supports 20 or 25 kHz channel
spacing selection, the radio stores separate tuning data for 20 kHz and 25 kHz channel spacing.
Therefore, both sets of tuning data should be tuned independently
2.
Select ‘Deviation Limit’ to open the deviation limit tuning window. This window is used to set the
values for 12.5 kHz radios and the 25 kHz data for 20/25 kHz radios. The window will indicate
the transmit test frequencies to be used.
3.
Select the first test frequency shown in the window.
4.
transmitting.
5.
Adjust the transmitter deviation to the value shown in table 6.2-5.
6.
Click the Toggle PTT button to dekey the radio.
7.
Repeat steps 3-6 for the remaining test frequencies.
8.
9.
If the radio supports 20 or 25 kHz channel spacing selection repeat steps 1- 8 for 20 kHz
channel spacing using the ‘Deviation Limit (20 kHz)’ window.
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1.
.
Table 6.2-5 Transmitter Deviation Limit Alignment Target.
Deviation
12.5 kHz
375 kHz
20 kHz
600 kHz
25 kHz
750 kHz
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Channel Spacing
Transmit Modulation Balance (Compensation)
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Compensation alignment balances the modulation sensitivity of the VCO and reference modulation
(synthesizer low frequency port) lines. Compensation algorithm is critical to the operation of
signalling schemes that have very low frequency components (e.g. PL) and could result in distorted
waveforms if improperly adjusted. The compensation value needs to be set at 7 frequencies across
the frequency range and for every channel spacing supported by the radio.
1.
2.
Select Modulation Balance to open the deviation balance tuning window. This window is used
to set the values for 12.5 kHz radios and the 25 kHz data for 20/25 kHz radios. The window will
indicate the transmit test frequencies to be used.
3.
Set the Test Box (GTF180) meter selector switch to the „GEN“ position, and inject a 2 kHz (two
kilohertz) tone at 800 mVrms (eight-hundred millivolts) into the "Audio In" port.
4.
Connect an AC meter to the meter port to ensure the proper input signal level.
5.
Select the first test frequency shown in the window.
6.2-7
6.
transmitting.
7.
Measure the transmitter deviation.
8.
Adjust the transmitter deviation to the value shown in table 6.2-6.
9.
Click the Toggle PTT button to dekey the radio.
10. Repeat steps 5 - 9 for the remaining test frequencies.
11. Click the Program button to store the softpot values.
12. If the radio supports 20 or 25 kHz channel spacing selection repeat steps 1- 11 for 20 kHz
channel spacing using the ‘Modulation Balance (20kHz)’ window.
.
2.2-2.3 kHz
20 kHz
3.4-3.6 kHz
25 kHz
4.3-4.6 kHz
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12.5 kHz
8.
Deviation
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Channel Spacing
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Table 6.2-6 Transmitter Deviation.
6.2-8
Table of Contents
Chapter 6.3
Theory of Operation
t
Table of Contents
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Paragraph
Page
Overview..................................................................................................... 1
2.0
Controller.................................................................................................... 2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
General ........................................................................................................ 2
Voltage Regulators ...................................................................................... 2
Electronic On/Off ......................................................................................... 3
Mechanical On/Off ....................................................................................... 3
Ignition ......................................................................................................... 3
Hook ............................................................................................................ 4
Microprocessor Clock Synthesizer .............................................................. 4
Serial Peripheral Interface (SPI) .................................................................. 4
SBEP Serial Interface .................................................................................. 5
General Purpose Input/Output..................................................................... 5
Normal Microprocessor Operation............................................................... 5
Control Head Model A2 or A3...................................................................... 6
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1.0
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Controller Board Audio and Signalling Circuits
3.0
General ....................................................................................................... 7
3.1
3.2
Audio Filter IC (AFIC) .................................................................................. 7
Audio Ground............................................................................................... 7
4.0
Transmit Audio Circuits............................................................................. 7
4.1
4.2
4.3
4.4
Mic Input Path..............................................................................................
External Mic Path.........................................................................................
PTT Sensing and TX Audio Processing ......................................................
Option Board only (GM950i only) ................................................................
Theory of Operation
7
8
8
9
6.3-i
Table of Contents
Paragraph
Page
Transmit Signalling Circuits ................................................................... 10
5.1
5.2
Sub-audible Data (PL/DPL) ....................................................................... 10
High Speed Data and DTMF ..................................................................... 11
6.0
Receive Audio Circuits............................................................................ 12
6.1
6.2
6.3
6.4
6.5
6.6
6.7
Squelch Detect .......................................................................................... 12
Audio Processing and Digital Volume Control ........................................... 13
Audio Amplification Speaker (+) Speaker (-) ............................................. 13
Handset Audio ........................................................................................... 14
Filtered Audio ............................................................................................ 14
Discriminator Audio (Unfiltered)................................................................. 14
Option Board Audio .................................................................................... 14
7.0
Receive Signalling Circuits..................................................................... 15
7.1
7.2
7.3
Sub-audible Data Decoder (PL/DPL) ........................................................ 15
High Speed Data Decoder......................................................................... 15
Alert Tone Circuits ..................................................................................... 16
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5.0
216-246MHz Specific Circuit Description
8.1
8.2
8.3
Front-End Band-Pass Filter & Pre-Amplifier .............................................. 17
IF IC (U5201) .............................................................................................. 18
9.0
Transmitter Power Amplifier (PA) 5-25W ............................................... 18
9.1
9.2
9.3
9.4
9.5
9.6
Power Controlled Stage.............................................................................
PA Stages..................................................................................................
Directional Coupler ....................................................................................
Antenna Switch..........................................................................................
Harmonic Filter ..........................................................................................
Power Control ............................................................................................
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8.0
18
19
19
19
20
20
10.0
Frequency Synthesis............................................................................... 22
10.1
10.2
10.3
10.4
Reference Oscillator ..................................................................................
Fractional-N Synthesizer (U3701) .............................................................
Voltage Controlled Oscillator (VCO) ..........................................................
Synthesizer Operation ...............................................................................
6.3-ii
22
22
22
23
Theory of Operation
Overview
1.0
Overview
This section provides a detailed theory of operation for the radio and its components.
The main radio is designed to accept one additional option board. This may provide functions such
as secure voice/or a signalling decoder.
The control head is mounted directly on the front of the radio. The control head contains a speaker,
LED indicators, a microphone connector, buttons and dependant of radio type, a display. These
provide the user with interface control over the various features of the radio.
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In addition to the power cable and antenna cable, an accessory cable can be attached to a
connector on the rear of the radio. The accessory cable provides the necessary connections for
items such as external speaker, foot operated PTT, ignition sensing, etc.
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6.3
Theory of Operation
6.3-1
Controller
2.0
Controller
2.1
General
The radio controller consists of 4 main subsections:
■
■
■
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■
Digital Control
Audio Processing
Power Control
Voltage Regulation
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The digital control section of the radio board is based upon a closed architecture controller
configuration.
16
8.
The digital section consists of a microprocessor, support memory, support logic, signal MUX ICs, the
On/Off circuit, and general purpose Input/Output circuitry.
Note:
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The closed architecture controller uses the Motorola 68HC11E9 (U0101) for a GM950E radio and
the 68HC11E20 for a GM950i radio. In this configuration RAM and ROM are contained within the
microprocessor itself. The only external memory device in the closed architecture controller is an
EEPROM (2KByte for GM950i radio).
From this point on the 68HC11E9 or E20 microprocessor will be referred to as E9/20µP or
µP. References to a Control Head will be to radio model A3 (Display radio).
Voltage Regulators
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Voltage regulation for the controller is provided by 3 separate devices; U0631 (LP2951CM) +5V,
U0601 (LM2941T) +9.3V, and UNSW 5V (a combination of R0621 and VR0621). An additional
regulator is located in the RF section.
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Voltage regulation providing 5V for the digital circuitry is done by U0631. Input and output capacitors
(C0631/0632 and C0633-0635) are used to reduce high frequency noise and provide proper
operation during battery transients. This regulator provides a reset output (pin 5) that goes to 0 volts
if the regulator output goes out of regulation. This is used to reset the controller to prevent improper
operation. Diode D0631 prevents discharge of C0632 by negative spikes on the 9V3 voltage
Regulator U0601 is used to generate the 9.3 volts required by some audio circuits, the RF circuitry
and power control circuitry. Input and output capacitors (C0601-0603 and C0604/0605) are used to
reduce high frequency noise. R0602/R0603 sets the output voltage of the regulator. If the voltage at
pin 1 is greater than 1.3 volts the regulator output decreases and if the voltage is less than 1.3 volts
the regulator output increases. This regulator output is electronically disabled by a 0 volt signal on
pin 2. Q0601 and associated circuitry (R0601/0604/0605 and C0606) are used to disable the
regulator when the radio is turned off.
UNSW 5V is only used in a few areas which draw low current and requires 5 V while the radio is off.
UNSW 5V CL is used to buffer the internal RAM. C0622 allows the battery voltage to be
disconnected for a couple of seconds without losing RAM parameters. Diode D0621 prevents radio
circuitry from discharging this capacitor.
The voltage 9V3 SUPP is only used in the VHF radio to supply the drain current for the RF MOS
FET in the PA.
6.3-2
Theory of Operation
Controller
The voltage SW B+ is monitored by the µP through the voltage divider R0641/R0642. Diode VR0641
limits the divided voltage to 5.1V to protect the µP.
Diode D5601 (UHF) / D3601 (VHF) located on the PA section acts as protection against transients
and wrong polarity of the supply voltage.
2.3
Electronic On/Off
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The radio has circuitry which allows radio software and/or external triggers to turn the radio on or off
without direct user action. For example, automatic turn on when ignition is sensed and off when
ignition is off.
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Q0611 is used to provide SW B+ to the various radio circuits. Q0611 acts as an electronic on/off
switch controlled by Q0612. The switch is on when the collector of Q0612 is low. When the radio is
off Q0612 is cutoff and the voltage at Q0611-base is at A+. This effectively prevents current flow
through Q0611 from emitter to collector. When the radio is turned on the voltage at the base of
Q0612 is high (about 0.6V) and Q0612 switches on (saturation) and pulls down the voltage at
Q0611-base. With Transistor Q0611 now enabled current flows through the device. This path has a
very low impedance (less than 1 ohm) from emitter to collector. This effectively provides the same
voltage level at SWB+ as at A+.
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The electronic on/off circuitry can be enabled by the microprocessor (through AFIC port GCB1, line
B+ CONTROL), the mechanical On/Off button on the control head (line ON OFF CONTROL), or the
ignition sense circuitry (line IGNITION CONTROL). If any of the 3 paths cause a low at the collector
of Q0612, the electronic ON is engaged.
Mechanical On/Off
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This refers to the on/off button, located on the control head, and which turns the radio on and off. If
the radio is turned off and the on/off button is pressed, line ON OFF CONTROL goes high and
switches the radio on as long as the button is pressed. The microprocessor is alerted through line
ANALOG 3 which is pulled to low by Q0925 (Control Head Model A3) while the on/off button is
pressed. If the software detects a low state it asserts B+ CONTROL via AFIC pin 39 low which
keeps Q0612 and Q0611, and in turn the radio switched on.
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If the on/off button is pressed and held while the radio is on, the software detects the line ANALOG
3 changing to low and switches the radio off by setting B+ CONTROL to low.
Ignition
Ignition sense is used to prevent the radio from draining the vehicle’s battery because the engine is
not running.
When the IGNITION input (J0400- 10) goes above 6 volts Q0421 and Q0612 turn on. This turns on
SW B+ by turning on Q0611 via line IGNITION CONTROL and Q0612 and the microprocessor
starts execution. The software reads the line IGNITION SENSE, determines from the level that the
IGNITION input is active and sets the B+ CONTROL output of the AFIC pin 39 to high to latch on
SW B+.
Theory of Operation
6.3-3
Controller
When the IGNITION input goes below 6 volts, Q0421 switches off and R0426, R0427 pull line
IGNITION SENSE high. The software is alerted by line IGNITION SENSE to switch off the radio by
setting B+ CONTROL to low. The next time the IGNITION input goes above 6 volts the above
process will be repeated.
2.6
Hook
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The HOOK input is used to inform the µP when the Microphone´s hang-up switch is engaged.
The signal is routed from J0101-3 and transistor Q0137 to the E9/20µP U0101-56. The voltage
range of HOOK in normal operating mode is 0-5V. If a rear GP input line is set as HOOK then the
front HOOK signal is overriden.
Microprocessor Clock Synthesizer
Serial Peripheral Interface (SPI)
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The controller uses the oscillator in the microprocessor E9/20µP along with some external
components (C0115-C0117, L0114, R0115, Y0114) to generate the clock. Q0114 is used to alter
the clock frequency slightly under software control if there is a possibility of harmonics of this clock
source interfering with the desired radio receive frequency.
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The µP communicates to many of the IC’s through its SPI port. This port consists of SPI TRANSMIT
DATA (MOSI) (E9/20µP:U0101-52), SPI RECEIVE DATA (MISO) (E9/20µP:U0101-51), SPI CLK
(E9/20µP:U0101-53) and chip select lines going to the various IC’s, connected on the SPI PORT
(BUS). This BUS is a synchronous bus, in that the timing clock signal CLK is sent while SPI data
(SPI TRANSMIT DATA or SPI RECEIVE DATA) is sent. Therefore, whenever there is activity on
either SPI TRANSMIT DATA or SPI RECEIVE DATA there should be a uniform signal on CLK. The
SPI TRANSMIT DATA is used to send serial from a µP to a device, and SPI RECEIVE DATA is used
to send data from a device to a µP. The only device from which data can be received via SPI
RECEIVE DATA is the EEPROM (U0108)
On the controller there are three ICs on the SPI BUS, AFIC (U103-33), EEPROM (U0108-1) and
D/A (U0731-6). In the RF sections there is one IC on the SPI BUS, the FRAC-N Synthesizer. The
SPI TRANSMIT DATA and CLK lines going to the RF section are filtered by L0194/L0195 to
minimize noise. The chip select lines for the IC´s are decoded by the address decoder U102.
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The SPI BUS is also used for the control head. U0104-1,2 buffer the SPI TRANSMIT DATA and CLK
lines to the control head. U0104-3 switches off the CLK signal for the LCD display if it is not selected
via LCD CE.
When the µP needs to program any of these IC’s it brings the chip select line for that IC to a logic 0
and then sends the proper data and clock signals. The amount of data sent to the various IC’s are
different, for example the FRAC-N can receive up to 13 bytes (97 bits) while the DAC can receive up
to 3 bytes (24 bits). After the data has been sent the chip select line is returned to a logic 1.
The Option board interfaces are different in that the µP can also read data back from devices
connected.
6.3-4
Theory of Operation
Controller
The timing and operation of this interface is specific to the option connected, but generally follows
the pattern:
1) an option board device generates the interrupt,
2) main board asserts a chip select for that option board device,
3) the main board µP generates the CLK, and
4) when data transfer is complete the main board terminates the chip select and CLK activity.
2.9
SBEP Serial Interface
8.
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The SBEP serial interface allows the radio to communicate with the Radio Service Software (RSS).
This interface connects to the Microphone connector (J0903/J0803) via Control Head connector
(J0101) and comprises BUS+ (J0101-15). The line is bi-directional, meaning that either the radio or
the RSS can drive the line.
General Purpose Input/Output
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When the RSS needs to communicate with the radio, an interrupt is generated by the BUS+ signal
through R0104. The µP then starts serial data communication on BUS+ by sending data from pin 50
through D0101 and receiving data at pin 47 through R0104. While the radio is sending serial data at
pin 50 it receives an ”echo” of the same data at pin 47.
The Controller provides six general purpose lines (GP1 through GP6) available on the accessory
connector J0400 to interface to external options. Lines GP1,4 are inputs, GP2 is an output and
GP3,5,6 are bidirectional. The software and the hardware configuration of the radio model define the
function of each port. Some ports are not connected on the 4ch radio, refer to appendix B.
GP1 can be used as external PTT input or others, set by the RSS.
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GP2 can be used as normal output (Q0441 placed) or external alarm output (Q0442 placed). The
voltage range can be set by R0442 (0-5V) or R0443 (0 - supply voltage).
GP4 can be used as normal input (D0471, R0477 not placed) or emergency input (D0471, R0477
placed).
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GP3,5,6 are bidirectional and use the same circuit configuration. Each port uses an output transistor
controlled by µP port PB5,4,7 and an input transistor read by µP port PC2,5,3. To use one of the
GP´s as input the µP must turn off the corresponding output transistor.
In addition the signals from GP3-6 are fed to the option board connectors J0102, J0103.
The 470pF and 10nF capacitors serve to filter out any AC noise which may ride on the GP lines.
2.11
Normal Microprocessor Operation
The E9/20µP (U0101) contains internal 12 (E9) or 20 (E20) Kilobytes ROM, 512 (E9) or 768 (E20)
bytes SRAM and 512 bytes EEPROM.
The E9/20µP RAM is always powered to maintain parameters such as the last operating mode. This
is achieved by maintaining 5V at U0101-25. Under normal conditions, when the radio is off UNSW
+5V is formed by FLT A+ running to D0621.
Theory of Operation
6.3-5
Controller
C0622 allows the battery voltage to be disconnected for a couple of seconds without losing RAM
parameters. Diode D0621 prevents radio circuitry from discharging this capacitor.
U0101-22 is the high reference voltage for the A/D ports on the E9/20µP. Resistor R0105 and
capacitor C0105 filter the +5V reference. If this voltage is lower than +5V the A/D readings will be
incorrect. Likewise U0101-21 is the low reference for the A/D ports. This line is normally tied to
ground. If this line is not connected to ground, the A/D readings will be incorrect.
The MODB (U0101-25) input of the E9/20µP must be at a logic 1 for it to start executing correctly.
The XIRQ (U0101-45) and the IRQ (U0101-46) pins should also be at a logic 1.
Control Head Model A2 or A3
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Optional external EEPROM (U0108) is available on some radio models. The external EEPROM is
accessed through a serial connection. The E9/20µP generates SPI CLK (U0101-53), SPI
TRANSMIT DATA (MOSI) (U0101-52) and SPI RECEIVE DATA (MISO) (U0101-51) to read or write
EEPROM. On a read of EEPROM the E9/20µP continues generating the clock and the EEPROM
places the requested data on the SPI RECEIVE DATA (MISO) line. On a write the message is
followed by the data to be written to the EEPROM.
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Two Control Head versions (A2 or A3) are available for user interface. Both Control Heads contain
the internal speaker, the microphone connector, several buttons to operate the radio and several
indicator LEDs to inform the user about the radio status. Additionally the Control Head model A3
uses a 3 digit, 7 segment, LCD display for the channel number.
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The On/Off button when pressed switches the voltage regulators on by pulling ON OFF CONTROL
to high and connects the base of Q0925(A3), Q0825(A2) to FLT A+. This transistor pulls the line
ANALOG 3 to low to inform the µP that the On/Off button is pressed. If the radio is switched off, the
µP will switch it on and vice versa. All other buttons work the same way. If a button is pressed, it will
connect one of the 3 lines ANALOG 1,2,3 to a resistive voltage divider connected to +5V. The
voltages of the lines are A/D converted inside the µP and specify the pressed button.
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All the back light and indicator LEDs are driven by current sources and controlled by the µP via
SERIAL PERIPHERAL INTERFACE (SPI) interface. The LED status is stored in shiftregister
U0941(A3), U0841(A2). Line LED CE enables the serial write process via Q0941(A3), Q0841(A2)
while line LED CLCK BUF shifts the data of line SPI DATA BUF into the shiftregister.
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In addition Control Head Model A3 contains the LCD display H0931. The display data of line SPI
DATA BUF is shifted into the display driver by clock signal LCD CLCK BUF.
6.3-6
Theory of Operation
General
CONTROLLER BOARD AUDIO AND SIGNALLING CIRCUITS
3.0
General
3.1
Audio Filter IC (AFIC)
The AFIC (U0103) used in the controller performs RX/TX audio shaping, i.e. filtering, amplification,
attenuation.
Audio Ground
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The AFIC is programmable through the SPI BUS (U0103-30/31/33), normally receiving 6 bytes. This
programming sets up various paths within the AFIC to route audio signals through the appropriate
filtering, gain and attenuator blocks. The AFIC also has 4 General Control Bits GCB1,3-5 which are
CMOS level outputs. GCB1 is used to switch the radio on and off under µP control via line B+
CONTROL. GCB3 is used to switch the audio PA on and off (AUDIO PA ENABLE). GCB4 selects
between the UNATTEN RX OUT audio signal and the unfiltered DET AUDIO signal. GCB5 HIGH
LOW BAND can be used to switch between band splits.
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VAG is the dc bias used as an audio ground for the Op-amps that are external to the Audio Filter IC
(AFIC). U0105-1 forms this bias by dividing 9.3V with resistors R0171, R0172 and buffering the
4.65V result with a voltage follower. VAG emerges at pin 1 of U0105-1. C0172 is a bypass capacitor
for VAG. The AFIC generates its own 2.5 V bias for its internal circuitry. C0153 is the bypass for the
AFIC’s audio ground dc bias. Note that while there are AFIC VAG, and BOARD VAG (U0105-1) each
of these are separate. They do not connect together.
Refer to Figure 6.3-1 for reference for the following sections.
4.1
Mic Input Path
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The radio supports 2 distinct microphone paths known as internal and external mic and an auxiliary
path (FLAT TX AUDIO). The microphones used for the radio require a DC biasing voltage provided
by a resistive network.
These two microphone audio inputs are connected together. Following the internal mic path; the
microphone is plugged into the radio control head and is connected to the controller board via
J0101-16. From here the signal is routed to C0142. R0141 and R0142 provide the 9.3VDC bias.
R0142 and C0141 provide a 1kΩ AC path to ground that sets the input impedance for the
microphone and determines the gain based on the emitter resistor in the microphone’s amplifier
circuit.
The MIC signal is routed to the AFIC´s TX IN input (U0103-10) through R0146 and R0145 (GM950E
radio) or through Op-amp buffer U0106-2 and option board connector J0103-3,1 (GM950i radio).
The audio signal at the output of U0106-2 should be approximately 80mV deviation with 25kHz
channel spacing.
Theory of Operation
6.3-7
The FLAT TX AUDIO signal from accessory connector U0400-5 is buffered by Op-amp U0106-1 and
fed to the AFIC U0103-13 through gate U0107-1. Gate U0107-1 is controlled by the µP port PC7
(U0101-42) and selects between FLAT TX AUDIO or signalling signal created by the µP.
J0101
J0103-3
IN
OPTION
BOARD
OUT
J0103-1
16
10 TX IN
CONTROL HEAD
CONNECTOR
13
5
FLAT TX
AUDIO
LIMITER
AUX
TX IN
SPLATTER
FILTER
16
2
EXT MIC
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U0201
ACCESSORY
CONNECTOR
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4-BIT
DEVIATION
ATTENUATOR
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5-BIT
DEVIATION
ATTENUATOR
19
TO
RF
SECTION
(SYNTHESIZER)
MOD IN
20
GEPD 5427-1
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FILTERS AND
PREEMPHASIS
J0400
8.
MIC
4.2
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Figure 6.3-1 Transmit Audio Paths
External Mic Path
4.3
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The external microphone signal enters the radio on accessory connector J0400 pin 2 and connects
to the standard microphone input through R0421.
PTT Sensing and TX Audio Processing
Mic PTT is sensed by the µP U0101 pin 22. An external PTT can be generated by grounding pin 3
on the accessory connector if this input is programmed for PTT.
The MIC signal is routed to the AFIC (U0103) through R0146 and R0145 (GM950E radio) or through
Op-amp buffer U0106-2 and option board connector J0103-3,1 (GM950i radio). R0145, C0145, the
amplifier inside the AFIC (pins 9,10) and gain setting resistor R0147 pre-emphasise the MIC audio
signal. After further limiting and filtering the modulation signal emerges from the AFIC at U0103-19/
20. Both signals are weighted by resistors R0181, R0182 and add up to signal MOD IN.
6.3-8
Theory of Operation
4.4
Option Board Audio (GM950i only)
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The audio coming from the microphone (J0101-16) or the external microphone (J0400-2) is routed
through Op-amp buffer U0106-2 (GM950i only) to the option board connector J0103-3. After option
board processing the signal emerges at J0103-1. The source resistor of the option board output and
C0145, the amplifier inside the AFIC (U0103-9,10) and gain setting resistor R0147 pre-emphasise
the signal. Inside the AFIC the signal follows a path identical to conventional transmit audio. The
modulation signal emerges from the AFIC at J0103-19/20. Both signals are weighted by resistors
R0181, R0182 and add up to signal MOD IN.
Theory of Operation
6.3-9
5.0
Refer to Figure 6.3-2 for reference for the following sections. From a hardware point of view, there
are three types of signalling:
1.
Sub-audible data (PL / DPL / Connect Tone) that gets summed with transmit voice or signalling,
2.
DTMF data for telephone communication in trunked and conventional systems, and
3.
Audible signalling including Select 5, MPT-1327, MDC, Single Tones.
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All three types are supported by the hardware while the radio software determines which signalling
type is available. Currently only PL/DPL and Single tones are supported in the software.
54
SPLATTER
FILTER
AUX TX
IN
42
ASFIC U0201
U0101
PL
32 CLOCK
STROBE
GEPD_5432
PL
ENCODER
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CONTROLLER
13
8.
62
TO RF
19, 20
SECTION
MOD IN (SYNTHESIZER)
GEPD 5432-1
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ATTENUATOR
5.1
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Figure 6.3-2 Transmit Signalling Paths
Sub-audible Data (PL/DPL)
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Sub-audible data implies signalling whose frequency is below 300Hz. Although it is referred to as
”sub-audible data,” the actual frequency spectrum of these waveforms may be as high as 250 Hz,
which is audible to the human ear. However, the radio receiver filters out any audio below 300Hz, so
these tones are never heard in the actual system.
Only one type of sub-audible data can be generated by U0103 (AFIC) at any one time. The process
is as follows, using the SPI BUS, the µP programs the AFIC to set up the proper low-speed data
deviation and select the PL or DPL filters. The µP then generates a square wave which strobes the
AFIC PL / DPL encode input PL CLOCK STROBE U0103-32 at twelve times the desired data rate.
For example, for a PL frequency of 103Hz, the frequency of the square wave would be 1236Hz.
This drives a tone generator inside U0103 which generates a staircase approximation to a PL sine
wave or DPL data pattern. This internal waveform is then low-pass filtered and summed with voice
or data. The resulting summed waveform then appears on U0103-19,20 (MOD IN), where it is sent
to the RF board as previously described for transmit audio.
6.3-10
Theory of Operation
5.2
High Speed Data and DTMF
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The High Speed Data and DTMF waveforms are created by the µP U0101 using summer U0105-3.
Op-amp U0105-3 and resistors R0121-R0124 add up the three signals coming from the µP pins 58,
59 and 62. The output signal of U0105-3 is routed to the AFIC (U0103-13) through gate U0107-1.
Inside the AFIC the signal enters the conventional transmitter audio path at the splatter filter input.
Gate U0107-1 controlled by µP port PC7 (U0101-42) selects between data signal and FLAT TX
AUDIO signal. Microphone audio is muted during High Speed Data signalling.
Theory of Operation
6.3-11
6.0
ACCESSORY
CONNECTOR
11
FLT RX AUDIO
J0400
1
AUDIO
PA
U0401
SPKR +
16
SPKR -
1
EXTERNAL
SPEAKER
6
INT
SPKR-
INT
SPKR+
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8.
CONTROL
HEAD
CONNECTOR
2
ATTEN.
1
16
J0101
23
IN 2 J0103-4
OUT
J0103-2
IN 1
RX AUD OUT
UNAT
22 RX OUT
VOLUME
ATTEN.
AUX
6 RX IN
FILTER AND
PL IN DEEMPHASIS
AFIC
U0103
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INTERNAL
SPEAKER
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BOARD
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7 RX IN
IF IC
DET AUDIO 28
23
SQ LIM OUT
CSQ DET
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FAST SQ
16
20
15
SQ OUT
SQ IN
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SQ RECT IN
SQUELCH ATTENUATOR
DET AUDIO
(DISCRIMINATOR
AUDIO)
MICRO CONTROLLER
15
U0101
CSQ DET
GEPD 5429-1
Figure 6.3-3 Receive Audio Paths.
Squelch Detect
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6.1
The IF IC controls the squelch characteristics of the radio. With a few external parts (R5222, C5229,
C5230, R5223) the squelch tail, hysteresis, attack and delay are optimized for the radio. To set the
squelch threshold the signal from IF IC pin 23 (line SQ ATT IN) is routed to the squelch attenuator
input of the AFIC (U0103-16). The attenuated signal (line SQ ATT OUT) from the AFIC (U0103-18)
enters the IF IC at pin 20 and is used to create a squelch indicator signal available at pin 15 (line
CSQ DET).
combined, weighted by resistors R0111 / R0112 and fed to one of the microprocessor´s ADCs
(U0101-15) for interpretation. From the voltage weighted by the resistors the µP determines whether
CSQ DET, FAST SQ or both are active.
6.3-12
Theory of Operation
6.2
Audio Processing and Digital Volume Control
The receiver audio signal enters the controller section from the IF IC (U5201-28) on DET AUDIO.
The signal is AC coupled by C0181 and enters the AFIC via the RX IN pin U0103-7.
Inside the AFIC the signal entering RX IN (U0103-7) goes through the audio path while the signal
entering PL DPL IN (U0103-8) via C0182 goes through the PL/DPL path.
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The audio path has a programmable amplifier, whose setting is based on the channel bandwidth
being received, then a LPF filter to remove any frequency components above 3000Hz and then an
HPF to remove any sub-audible data below 300Hz. Next, the recovered audio passes through a deemphasis filter if it is enabled (to compensate for Pre-emphasis which is used to reduce the effects
of FM noise). The IC then passes the audio through the 8-bit programmable attenuator whose level
is set depending on the value of the volume control. Finally, the filtered audio signal passes through
an output buffer within the AFIC. The audio signal exits the AFIC at RX AUDIO U0103-23.
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The µP programs the attenuator, using the SPI BUS, based on the volume setting. The minimum/
maximum settings of the attenuator are set by codeplug parameters.
Audio Amplification Speaker (+) Speaker (-)
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Since sub-audible signalling is summed with voice information on transmit, it must be separated
from the voice information before processing. Any sub-audible signalling enters the AFIC from the IF
IC at PL DPL IN U0103-8. Once inside it goes through the PL/DPL path. The signal first passes
through one of 2 low pass filters, either PL low pass filter or DPL/LST low pass filter. Either signal is
then filtered and goes through a limiter and exits the AFIC at PL DPL DECODER OUT U0103-27. At
this point the signal will appear as a square wave version of the sub-audible signal which the radio
received. The microprocessor (U0101-64) will decode the signal directly to determine if it is the tone/
code which is currently active on that mode.
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The output of the AFIC´s digital volume pot, U0103-23 is routed through a voltage divider formed by
R0401 and R0402 to set the correct input level to the audio PA (U0401). This is necessary because
the gain of the audio PA is 46 dB, and the AFIC output is capable of overdriving the PA unless the
maximum volume is limited.
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The audio then passes through C0401 which provides AC coupling and low frequency roll-off.
C0402 provides high frequency roll-off as the audio signal is routed to pins 1 and 9 of the audio
power amplifier U0401.
The audio power amplifier has one inverted and one non-inverted output that produces the
differential audio output SPK+ / SPK- (U0401-4/6). The inputs for each of these amplifiers are pins 1
and 9 respectively; these inputs are both tied to the received audio. The audio PA’s DC biases are
not activated until the audio PA is enabled at pin 8.
The audio PA is enabled via AUDIO PA ENABLE signal from the AFIC (U0103-40). When the base
of Q0401 is low, the transistor is off and U0401-8 is high, using pull up resistor R0406, and the Audio
PA is ON. The voltage at U0401-8 must be above 8.5VDC to properly enable the device. If the
voltage is between 3.3 and 6.4V, the device will be active but has its input (U0401-1/9) off. R0404
ensures that the base of Q0401 is high on power up. Otherwise there may be an audio pop due to
R0406 pulling U0401-8 high before the software can switch on Q0401.
Theory of Operation
6.3-13
The SPK+ and SPK- outputs of the audio PA have a DC bias which varies proportionately with FLT
A+ (U0401-7). FLT A+ of 11V yields DC offset of 5V, and FLT A+ of 17V yields a DC offset of 8.5V. If
either of these lines is shorted to ground, it is possible that the audio PA will be damaged. SPK+ and
SPK- are routed to the accessory connector (J400-16 and 1) and to the control head (connector
J0101-1 and 2).
6.4
Handset Audio
Certain hand held accessories have a speaker within them which require a different voltage level
than that provided by U0401. For those devices HANDSET AUDIO is available at J0101-14.
Filtered Audio
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The received audio from the output of the AFIC´s digital volume attenuator is also routed to U01054 pin 9 where it is amplified 15 dB; this is set by the 10k/68k combination of R0154 and R0155. This
signal is routed from the output of the Op-amp U0105-4 pin 8 to J0101-14. The control head sends
this signal directly out to the microphone jack. The maximum value of this output is 6.6Vp-p.
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The AFIC has an audio whose output at U0103-22 has been filtered and de-emphasized, but has
not gone through the digital volume attenuator. From AFIC U0103-22 the signal is routed through
gate U0107-2 and AC coupled to U0106-4. The gate controlled by AFIC port GCB4 (U0103-2)
selects between the filtered audio signal from the AFIC or the unfiltered discriminator signal from the
IF IC U5201.The output at U0106-4 is then routed to J0400-11. Note that any volume adjustment of
the signal on this path must be done by the accessory.
Discriminator Audio (Unfiltered)
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Note that discriminator audio DET AUDIO from the IF IC U5201, in addition to being routed to the
AFIC, is also routed to the option connector J0103-5 (See Secure Rx description blocks for further
information).
Option Board Audio
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Discriminator or filtered audio, enters the option board at connector J0103-5 and J0103-4. On the
option board, the signal may be processed and then fed back through (J0103-2) to AUX RX IN of the
AFIC (U0103-6). From then on it follows a path identical to conventional receive audio, where it is
filtered (0.3 - 3kHz) and de-emphasized.
6.3-14
Theory of Operation
7.0
HIGH SPEED DATA
CENTRE SLICER
U0105-2
22
1
PL CLOCK 32
STROBE
PL
DPL
IN
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U0101
FILTER
LIMITER
PL DPL 27
DECODER
OUT
GEPD_5430
DPL
TPL
24
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8
16
DET AUDIO
DISCRIMINATOR AUDIO
FROM RF SECTION
(IF IC)
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CONTROLLER
AFIC
U0103
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RX OUT
Figure 6.3-4 Receive Signalling Path.
7.1
Sub-audible Data Decoder (PL/DPL)
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The receiver audio signal entering the AFIC U0103 at pin 8 first passes through the Tone PL filter or
the Digital PL filter, depending on the PL option selected for the current operating mode. Filtered PL
is then coupled to the PL detector circuit, with detected PL output at U0103-27. At this point the
signal will appear as a square wave version of the sub-audible signal which the radio received. The
microprocessor U0101-64 will decode the signal directly to determine if it is the tone / code which is
currently active on that mode.
High Speed Data Decoder
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The unattenuated receiver audio signal from U0103-22 is AC coupled to the input of centre slicer
circuit U0105-2. The non-inverting input of Op-amp U0105-2 is fed through resistor R0162.
Capacitor C0164 sets a low-pass corner frequency of 3.3kHz. The inverting input of Op-amp U01052 is fed through resistor R0163. Capacitor C0163 sets a low-pass corner frequency of 16Hz.
During operation, R0163 / C0163 establish an average DC offset level at U0105-2 pin 6 dependent
on the average DC level of the undetected signal to set the “trigger” threshold of U0105-2. R0162 /
C0164 provide high audio frequency roll-off to improve falsing immunity, but passes 600 or 1200
baud signals. The detected output from the centre slicer circuit is buffered and inverted by Q0161
and then coupled to the µP U0101-1 where algorithms perform the final decoding.
Theory of Operation
6.3-15
7.3
Alert Tone Circuits
When the software determines that it needs to give the operator an audible feedback (for a good key
press, or for a bad key press), or radio status , it sends an alert tone to the speaker.
It does so by sending SPI BUS data to U0103 which sets up the audio path to the speaker for alert
tones. The alert tone itself is generated by the AFIC.
The allowable internal alert tones are 410, 820, and 1640Hz. In this case a code contained within
the SPI BUS load to the AFIC sets up the path and determines the tone frequency, and at what
volume level to generate the tone. (It does not have to be related to the voice volume setting).
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Inside the AFIC, this signal is routed to the alert tone generator; the output of the generator is
summed into the audio chain just after the RX audio de-emphasis block. Inside U0103 the tone is
amplified and filtered, then passed through the 8-bit digital volume attenuator, which is typically
loaded with a special value for alert tone audio. The tone exits at U0103-23 and is routed to the
audio PA like receive audio.
6.3-16
Theory of Operation
Receiver Front-End
216-246MHz SPECIFIC CIRCUIT DESCRIPTION
6.3
8.0
Receiver Front-End
The receiver is able to cover the range from 216 to 246 MHz. It consists of four major blocks: frontend, mixer, first IF section and IF IC. Antenna signal pre-selection is performed by two varactor
tuned bandpass filters. A double balanced schottky diode mixer converts the signal to the first IF at
45.1 MHz.
Front-End Band-Pass Filter and Pre-Amplifier
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Two crystal filters in the first IF section and two ceramic filters in the second IF section provide the
required selectivity. The second IF at 455 kHz is mixed, amplified and demodulated in the IF IC. The
controller section.
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A two pole pre-selector filter tuned by the dual varactor diode D3301 pre-selects the incoming signal
(PA RX) from the antenna switch to reduce spurious effects to following stages. The tuning voltage
(FE CNTL VLTG) ranging from 2 volts to 8 volts is controlled by a Digital to Analog (D/A) converter
(U0731-11) in the controller section. A dual hot carrier diode (D3303) limits any inband signal to
0dBm to prevent damage to the pre-amplifier.
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The RF pre-amplifier is an SMD device (Q3301) with collector base feedback to stabilize gain,
impedance, and intermodulation. The collector current of approximately 11-16 mA, drawn from the
voltage 9V3, is controlled by a current source composed of Q3302, R3302, R3300, and R3311 R3313. In transmit mode the high K9V1 signal fed through diode D3300 switches off the current
source and in turn the pre-amplifier. In receive mode K9V1 must be low to switch on the current
source. A 3 dB pad (R3306 - R3308 and R3316 - R3318) stabilizes the output impedance and
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A second two pole varactor tuned bandpass filter provides additional filtering to the amplified signal.
The dual varactor diode D3313 and D3314 are controlled by the same signal which controls the preselector filter.
8.2
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If the radio is configured for a base station application, R3318 is not placed and TP3301 and TP3302
are shorted.
The signal coming from the front-end is converted to the first IF (45.1 MHz) using a double balanced
schottky diode mixer (D3331). Its ports are matched for incoming RF signal conversion to the
45.1MHz IF using high side injection. The injection signal (VCO MIXER) coming from the mixer
buffer (Q3770) is filtered by the lowpass consisting of (L3333, L3334, C3331 - C3333) and has a
level of approximately 10 dBm.
The mixer IF output signal (RX IF) from transformer T3301 pin 2 is fed to the first two pole crystal
filter Y5201. The filter output in turn is matched to the following IF amplifier.
Theory of Operation
6.3-17
Transmitter Power Amplifier (PA) 5-25W
The IF amplifier Q5201 is actively biased by a collector base feedback (R5201, R5202) to a current
drain of approximately 5 mA drawn from the voltage 5V STAB. The output impedance is matched to
the second two pole crystal filter Y5202. A dual hot carrier diode (D5201) limits the filter output
8.3
IF IC (U5201)
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The first IF signal from the crystal filters feeds the IF IC (U5201) at pin 6. Within the IF IC the
45.1MHz first IF signal mixes with the second local oscillator (LO) at 44.645MHz to the second IF at
455 kHz. The second LO uses the external crystal Y5211. The second IF signal is amplified and
filtered by two external ceramic filters (FL5201, FL5202). Back in the IF IC the signal is demodulated
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9.0
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The transmitter is able to cover the range from 216 to 246 MHz.
9.1
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The radio’s 5-25 W PA is a four stage amplifier used to amplify the output from the exciter to the
radio transmit level. It consists of four stages in the line-up. The first (Q8510) is a bipolar stage that is
controlled via the PA control line. It is followed by another bipolar stage (Q8520), a MOS FET stage
(Q8530, Q8531) and a final bipolar stage (Q8540). Devices Q8510, Q8520,Q8530 and Q8531 are
surface mounted. Bipolar Transistor Q8540 is directly attached to the heat sink.
The first stage (Q8510) amplifies the RF signal from the VCO (line EXCITER PA) and controls the
6.3-18
Theory of Operation
voltage drop across R8623 and R8624 plus VBE (0.6V) equals the voltage drop across R8621 plus
VBE (0.6V) of Q8611. If the voltage of PWR CNTL is raised, the base voltage of Q8612 will also rise
causing more current to flow to the collector of Q8612 and a higher voltage drop across R8621. This
in turn results in more current driven into the base of Q8510 by Q8621 so that the current of Q8510
is increased. The collector current settles when the voltage over the series configuration of R8623
and R8624 plus VBE of Q8621 equals the voltage over R8621 plus VBE (0.6V) of Q8611.
PA Stages
8.
9.2
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By controlling the output power of Q8510 and in turn the input power of the following stages the ALC
loop is able to regulate the output power of the transmitter. Q8611 is used for temperature
compensation of the PA output power.
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The bipolar transistor Q8520 is driven by Q8510. To reduce the collector-emitter voltage and in turn
the power dissipation of Q8510 its collector current is drawn from the antenna switch circuit.
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In transmit mode the base of Q8520 is slightly positive biased by a divided K9V1 signal. This bias
along with the RF signal from Q8510 allows a collector current to be drawn from the antenna switch
circuit and in turn switches the antenna switch to transmit, while in receive mode the low K9V1
signal with no RF signal present cuts off the collector current and in turn switches the antenna
switch to receive.
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The following stage uses two enhancement mode N-Channel MOS FET devices (Q8530, Q8531)
and requires for each device a positive gate bias and a quiescent current flow for proper operation.
The voltages of the lines BIAS VLTG and BIAS VLTG 2 are set in transmit mode by two Digital to
Analog (D/A) converters (U0731-4, U0731-11) and fed to the gates of Q8531 and Q8530 via two
resistive dividers. The bias voltages are tuned in the factory. If one or both transistor are replaced,
the bias voltages must be tuned with the Service Software (RSS). Care must be taken, not to
damage any device by exceeding the maximum allowed bias voltage. The collector currents are
drawn from the supply voltage A+ via L8531 and L8532.
9.3
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The final stage uses the bipolar device Q8540 and operates off the A+ supply voltage. For class C
consisting of C8541-C8544 and two striplines transform the impedance to 50 Ohms and feed the
directional coupler.
Directional Coupler
power off the RF power from Q8541. The coupled signal is rectified to an output power proportional
9.4
Antenna Switch
The antenna switch is switched synchronously with the K9V1 voltage and feeds either the antenna
signal coming through the harmonic filter to the receiver or the transmitter signal coming from the PA
to the antenna via the harmonic filter.
Theory of Operation
6.3-19
In transmit mode, this K9V1 voltage is high and biases Q8520 and, along with the RF signal from
Q8510, allows a collector current to be drawn. The collector current of Q8520 drawn from A+ flows
via L8542, L8541, directional coupler, D8551, L8551, D8631, L8631, R8616, R8617 and L8611 and
switches the PIN diodes D8551 and D8631 to the low impedance state.
D8551 leads the RF signal from the directional coupler to the harmonic filter. The low impedance of
D8631 is transformed to a high impedance at the input of the harmonic filter by the resonant circuit
formed by L8551, C8633 and the input capacitance of the harmonic filter.
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In receive mode the low K9V1 and no RF signal present from Q8510 turn off the collector current of
Q8520. With no current drawn by Q8520 and resistor R8615 pulling the voltage at PIN diode D8631
to A+ both PIN diodes are switched to the high impedance state. The antenna signal, coming
through the harmonic filter, is channelled to the receiver via L8551, C8634 and line PA RX.
Harmonic Filter
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16
8.
A high impedance resonant circuit formed by D8551 in off state and L8554, C8559 prevents an
influence of the receive signal by the PA stages. The high impedance of D8631 in off state doesn´t
influence the receiver signal.
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The transmitter signal from the antenna switch is channelled through the harmonic filter to the
antenna connector J8501.The harmonic filter is formed by inductors L8552, L8553, and capacitors
C8551 through C8554. This network forms a low-pass filter to attenuate harmonic energy of the
transmitter to specifications level. R8550 is used for electro-static protection.
Power Control
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The microprocessor controls K9V1 ENABLE (U0101-6) to switch on the first and the second PA
stage via transistors Q0741, Q0742 and signal K9V1. The antenna switch is turned on by the
collector current of the second PA stage. In TX mode the front-end control D/A (U0731-11) is used
for BIAS VOLTAGE 2 (via R0736) and K9V1 ENABLE pulls signal FE CNTL VLTG to ground via
Q0743. PA DISABLE, also microprocessor controlled (U0101-54), sets BIAS VLTG (U0731-4) and
VLTG LIMIT SET (U0731-13) via D0731 and BIAS VLTG 2 via D0733 in receive mode to low to
switch off the biases of the MOS FET devices Q8530, Q8531 and to switch off the power control
voltage (PWR CNTL).
6.3-20
Theory of Operation
Op-amp U0701-2 and resistors R0701 to R0703 and R0731 subtract the negative PWR DETECT
voltage from the PA PWR SET D/A output U0731 pin 2. The result is connected to Op-amp inverting
input U0701-4 pin 9 which is compared with a 4.6 volt reference VAG present at noninverting input
U0701-4 pin 10 and controls the output power of the PA via pin 8 and control line PWR CNTL. The
4.6 volt reference VAG is set by a resistive divider circuit (R0171, R0172) which is connected to
ground and 9.3 volts, and buffered by Op-amp U0105-1.
During normal transmitter operation the voltages at the Op-amp inputs U0701-4 pins 9 and 10
should be equal to 4.6 volts and the PA control voltage output at pin 8 should be between 4 and 7
volts. If power falls below the desired setting, PWR DETECT becomes less negative, causing the
output at U0701-2 pin 7 to decrease and the Op-amp output U0701-4 pin 8 to increase.
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at the desired level. The power set D/A output voltage PA PWR SET (U0731-2) at U0701-2 pin 5
adjusts power in steps by adjusting the required value of PWR DETECT. As PA PWR SET (U07312) decreases, transmitter power must increase to make PWR DETECT more negative and keep the
inverting input U0701-4 pin 9 at 4.6 volts.
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Loop frequency response is controlled by Op-amp feedback components R0712 and C0711. Opamp U0701-3 compares the power control voltage PWR CNTL divided by resistors R0717 to R0719
with the voltage limit setting VLTG LIMIT SET from the D/A converter (U0731-13) and keeps the
control voltage constant via Q0711 if the control voltage, reduced by the resistive divider (R0717 to
R0719), approaches the voltage of VLTG LIMIT SET (U0731-13).
comparator formed by Op-amp U0701-3.
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bias voltages BIAS VLTG, BIAS VLTG 2 for low control voltage levels.
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The temperature of the PA area is monitored by Op-amp U0701-1 using thermistor R8641 (located
in the PA section). If the temperature increases, the resistance of the thermistor decreases,
decreasing the voltage PA TEMP. The inverting amplifier formed by U0701-1 amplifies the PA TEMP
voltage and if the voltage at Op-amp pin 1 approaches 4.6 V plus the voltage (ON) across D0721,
U701-1 simulates an increased power which in turn decreases the power control voltage until the
voltage at U0701-4 pin 9 is 4.6V again. During normal transmitter operation the output voltage of
Op-amp U701-1 pin 1 is below 4.6V. Diode D8601 located in the PA section acts as protection
against transients and wrong polarity of the supply voltage.
Theory of Operation
6.3-21
Frequency Synthesis
10.0
Frequency Synthesis
The complete synthesizer subsystem consists of the Reference Oscillator (Y3702 or Y3701), the
Fractional-N synthesizer (U3701), the Voltage Controlled Oscillator (Q3741, Q3751), the RX and TX
buffer stages (Q3760, Q3770, Q3780) and the feedback amplifier (Q3790).
10.1
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frequency of 16.8 MHz. An analog to digital (A/D) converter internal to U3701 and controlled by the
microprocessor via serial interface (SRL) sets the voltage at the warp output of U3701 pin 16 to set
the frequency of the oscillator. The output of the oscillator (pin 2 of Y3702) is applied to pin 14
(XTAL1) of U3701 via a RC series combination.
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finally a super filter for the regulated 9.3 volts.
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A voltage of 9.3V applied to the super filter input (U3701 pin 22) supplies an output voltage of 8.6
VDC at pin 18. It supplies the VCO (Q3741 / Q3751), VCO modulation bias circuit (R3714) and the
synthesizer charge pump resistor network (R3723, R3724). The synthesizer supply voltage is
provided by the 5V regulator U3801.
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two (1.05 MHz) 180 degrees out of phase signals (U3701-9 and -10).
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10.3
The Voltage Controlled Oscillator (VCO) uses 2 colpitts oscillators, FET Q3741 for transmit and FET
Q3751 for receive. The appropriate oscillator is switched on or off by FRAC-N IC output AUX3
(U3701-1) using transistors Q3742 and Q3752. In RX mode AUX3 is nearly at ground level and
Q3742 enables a current flow from the source of FET Q3751 while Q3752 is switched off. In TX
mode AUX3 is about 5V DC and Q3742 is switched off. Q3752 is switched on and enables a current
flow from the source of FET Q3741 while Q3751 is switched off. When switched on the FETs draw a
drain current of 8 mA from the FRAC-N IC super filter output. The frequency of the receive oscillator
is mainly determined by L3752, C3752, C3754 - C3756 and varactor diodes D3751 / D3752.
6.3-22
Theory of Operation
Frequency Synthesis
Diode D3754 controls the amplitude of the oscillator. The frequency of the transmit oscillator is
mainly determined by L3734, C3736 - C3740 and varactor diodes D3732 / D3733. Diode D3739
controls the amplitude of the oscillator. With a steering voltage from 3V to 10V at the varactor diodes
the RX frequency range from 181.1 MHz to 219.1 MHz and the TX frequency range from 136 MHz
to 174 MHz are covered. In TX mode the modulation signal coming from the FRAC-N synthesizer IC
(U3701 pin 28) modulates the TX VCO via varactor diode D3731.
16
10.4
8.
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Both oscillator outputs are combined and buffered by the VCO Buffer Q3760. Q3760 draws a
collector current of 13 mA from the stabilized 5V (U3801) and drives the Mixer Buffer Q3770. Q3770
draws a collector current of 17 mA from the 9V3 voltage and drives the PA Buffer Q3780 (Pout =
13dBm) and the Pre-scaler Buffer Q3790. Q3790 draws a collector current of 8 mA from the
stabilized 5V (U3801) and drives the pre-scaler internal to the FRAC-N IC. In transmit mode Q3780
is switched on by the K9V1 signal and draws a collector current of 19 mA from the K9V1 voltage.
The injection signal VCO MIXER with a level of 10dBm feeds the mixer through R3774. The buffer
stages Q3760, Q3770, Q3780 and the feedback amplifier Q3790 provide the necessary gain and
isolation for the synthesizer loop.
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The complete synthesizer subsystem works as follows. The combined output signal of the RX VCO
(Q3751) and TX VCO (Q3741) is buffered by VCO Buffer Q3760, Mixer Buffer Q3770 and Pre-scaler
Buffer Q3790. To close the synthesizer loop, the collector of Q3790 is connected to the PREIN port
of synthesizer U3701 (pin 20). The output of (Q3770) also provides signals for the mixer (via VCO
MIXER) and the PA Buffer (Q3780).
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of the loop divider is connected to the phase detector, which compares the loop divider´s output
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The charge pump outputs a current at pin 29 (I OUT of U3701). The loop filter (which consists of
R3715 - R3717, C3723 - C3725, C3727) transforms this current into a voltage that is applied to the
varactor diodes D3732, D3733 (TX), D3751, D3752 (RX) and alters the output frequency of the TX
VCO (Q3741) and RX VCO (Q3751). The current can be set to a value fixed in the FRAC-N IC or to
a value determined by the current flowing into CPBIAS 1 (U3701-27). The current is set by the value
of R3723 and R3724. The selection of the two different bias sources is done by software
programming.
determined only by the resistors connected to CPBIAS 1 or the internal current source.
routed to µP U0101-17 for further processing.
into a digital code that is applied to the loop divider, thereby causing the carrier to deviate.
Theory of Operation
6.3-23
Frequency Synthesis
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The balance attenuator is used to adjust the VCO’s deviation sensitivity to high frequency
modulating signals. The output of the balance attenuator is present at the MODOUT port (U370128) and connected to the VCO modulation diode D3731.
6.3-24
Theory of Operation
Table of Contents
Chapter 6.4
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Description
8.
216-246MHz Diagrams and Parts Lists
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PCB Layout Component Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PCB Layout Solder Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
80ch Model, Closed Controller Schematic Diagram 1 of 2 . . . . . . . . . . . . . . . . . . . . . . 3
80ch Model, Closed Controller_IO Schematic Diagram 2 of 2 . . . . . . . . . . . . . . . . . . . 5
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4/6
Supply Voltage Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power Control Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power Amplifier 5-25W Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Synthesizer Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Voltage Controlled Oscillator Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
RX-FE Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
RX-IF Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4-i
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8.
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Table of Contents
6.4-ii
3
C8600
R425
VR411
Q431
R446
C422
C412
C446
R422
R431
R432
VR431
C431
VR420
VR445
2
C445
R426
VR422
C464
R454
C405
VR464
C406
R5223
C3321
L3304
R3340
R3341
R3751
C3313
L3303
5
C3306
D3311 C3305
C3304
C3351
D3312
R3314
R3306
Q3301
R3315
C3352
C3319
C3307
L3302
R3308
C3311
E3301
R3301
C3302
R3303
R3313
C3308
R3304
D3303 L3301
L3300
C3301
R3321
C3758
R3307
C3314
C3309
R3762
C3334
R3305
3
4
R5211
L5211
Y5211
R3302 C3310
C3355 C3312
L3332
3
2
1
R5217
4
3
2
1
R3309
D3314
L3331
R3331
2 1
T3301
4
5
C3317
C3316
C3315
C3320
5
D3331
4
C3318
L3761
1
C3354
8
C3331
C3763
FL5202
C3801
C3802
1
3
4
T3302
2 3
C5211
L3334
1
2
5
1
C5212
Y5202
L5201
6
2
R5212 C5213
4
C3704
C3333
C3766
R3769
R3761 C3765 R3766
R3743
R3752
FL5201
C5214
Y5201
C3764
Q3760
R3753
C3761
L3750
C3757
C3755
C3752
D3754 Q3751
C3803
D3313
C3353
C3707
L3733
C3734
D3733
C3739 C3737
C632
Q8520
R8511
SH8501
1
L8541
L8542
C8544
D8631
L8551
C8559
R8541
D8551
L8554
C8546
C8548
C8530
C8633
C8634
C8547
C8632
L8631
C8553
1
1
2
e
t
C455
R423
C8524
R8515 C8514
C8513
R8512
L8600
Q421
R427
C8532
C8555
C8552
C8541
C8534
U401
R8614
C8512
1
6
8
.
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C8511
R8513
4
C8533
R8514
L8532
5
Q8510
1
4
9
1
L3751
8
C8616
C8623
C8617
C8501
R5206
C8528
L8611
C402
C8502
R8501 C8503
C8611
R8502
L8501
L8503
L5206
C3332
R3763
C3762
R3754
C3756
C5235
E3731
U601
d
i
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C401
C8622 R8623
R401
R402
C732
R733
C713
R3767
R3765
Q3752
L3752
D732
C8613
R715
R732
C151
L402
R406
L401
1
R731
C731 16
Q3742
R3739
5
U3801
1
4
L8531
Q742
R720
C403
C407
C701
C721
U731
1 R153
14
R407
R741
C742 VR621 C621
R742
R8624
Q8621
R145
C133
C156
C420
Q741
C3733
L3741
D3739 U3741 R3741
C3740
C3744
C3745
R3742
D3752 D3751
L3754
C3754
R621
C3731
L3731
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C419
8
R136
U106
R605 5
8
R604
Q601
D621
R601
L3732
R3731
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a
R156
R135 D733
9
R735
8
1
D3731
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Q731
R189
R152
C185
R151
R404 R405 Q401
C404
R734
C142
7
U631
C641
C141
R142
R141
C631
4
C3738 C3736
C182
8 C191
R143
R146
R144
D3732
C8642
R186
R188
D731
C172
C635
C131
14
C155
R155
R154
C154
R3801
R8641
R183
L3734
R184
C184
1
C622
8
R185
C3735
C634
C8620
U108
5
9
U107
1
R5221
8
C3706
R3709
C101
R721
8
C132
1
U105
4
8
4
1
R101
16
R187
R122
R121
C121R123
R165
C171
R3701 C3713
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R161
R172
R171
7
VR454
9
R131 R130
C181
C122
R191R124
C162
C161
R128
R120
R162
R166 R164
C164
R192
C163
R163
C3724
U102
C633
1
C3702 R3702
L3333
16
1
C5226
Y3702
C194
1
49
R103
D3702
14
3
2
R3705
C3709
R127
U104
C3727
C8521
U101
C110
C3701
C134
R134
R110
R106
R107
R109
R108
R126
D101
R114
R119 Q138
C102
7
R3723
C127
R125
R102
R104
R5222
h
tt p
Q161 R167
18
R160
8
R3703
C3726 R3724
1
17
R113
C5229
E3701
C125
C126
C137
33
C5238
C105
C103
2
C116 C117
Q114
C114
C118 R116
Y114
Q137
C115
J101
R115
L114
3
C8535
C8536
L8553
C8551
C104
4
C5230
R105
R137
R138
216-246MHz Main Board Component Side
L8552
C8554
R8550
C8529
C8537
1
C8542
2
3
2
J8601
C8543
J8501
15
2
16
J400
GM950EI008-A
216-246MHz Main Board Component Side
PCB No. 8485664Z02
6.4-1
216-246MHz Main Board Solder Side
C436 C451C472 C444 R444 C442
1
2
Q8540
4
L8534
5
R8553
D8553
C8539
L8539
TP8203
R8523
TP3732
R3311
Q3302
R3317
R3316
TP3302
TP3301
C3781 R3779
R3774 R3777
L3773
R3776
R3775
D5201
C5215
C5223
30
23
C5237
R5225
C5234
R5224
C5220
C5232
C5233
R5216
C5231
U5201
1
5
12
C5222
C5221
C5236
C5239
C5224 C5216
L5203
C5206
C5204
R5202
R5203
C5228
C5225
Y3701
TP3702
R3711
C3721
C3720
C5227
25
TP3701
R3713
U3701
9
17
C3717
C3715
C3708
E3703
C5208
C5207
R5204
C3716
C3710
R3710
C3711
E3702
C3703
R3704
R5207
R5205
Q5201
VR3701
C3723
R5201
C3722
R3708
D3701
C3725 R3715
R3716R3718
R3717
C5202
C5203
C5201
L5202
C5205
C5200
C3772
R3772
R3768
C3773
R3712
TP3704
R3740
C3743
R3771
R3714
C3712
C197
R3778 C3777
R3795
L3781
R3793
Q3790
C3791
C3705
C109
R112
C111
C3771
C3774
C3322
Q3770
C3792
C3786
R3785
TP110
TP107
C196
C173
C112
R111
C3300
C3719
C157
C199
L195
R3330
R3318
R3312
C3775
R3791 L3768
C3790
L3742
C153
C150
C152
R182
C8558
C3303
C3718
R118
R117
7
C119
C176
TP8204
C8631
D3300
R3794 C3767
C198
L194
R173
J103
C611
D611
C174
C170
C146
R147
R139
C175
VR118
R181
TP106
TP109
R175
TP104
TP105
TP108
R157
8
26
25
15
16
C3793
R3792
C148
R148
VR160
1
36
35
1
U103
C147
2
5
R614
C149
L3783
D631
R736
R631
R632
1
6
8
.
n
R149
6
C3784
R603
R602
Q3780
R3786C3782
R3782
C3780
R3781 C3751 C3783
d
i
o
R606
e
t
C145
C602
C601
Q732
Q611
R150
C8556
R8551
R8552
E3732
C3785
C604
C605
R737
R725
L170
C603
C711
C738
VR641
C702
C703
R703
R722
TP111
7
R641
R642
R724
C705
R701
R705
C741
1
U701
R738
C733
R704
8
14
R711
D721
R712
R8534
1
TP8202
C8612
R8621
R717
R702
R713
Q711
C714
R8535
R8533
R8521
C613
R718
R719
7
R8532
C8531
R8529
R8528
R8611
R716
J102
C8618
R8616
C8615
R100
R471
C471
8
C723 C712
R723
C722
1
C8614
TP8201
D481
R472
2
R8613
.m
y
r
a
C439
R435
C438
R438
R439
R8622
C8621
R476 R473
C716
C461
Q8611
R482
Q481
R8615
C8619
R8612 Q8612
R475
D471
Q433
R483
R714
C463
R461
R437
R436
Q461
R481
w
Q432
R465
R462
R8617
R474
w
Q462
R463
C413
R413
D482
Q441
C441
C462
Q471 R478
Q412
R415
C435
R412
R464
C414
Q482
R442
R477
R414
C8523
C8604
:/
/
w
R411
Q442
C8538
3
1
Q8531
2
R8527
C8602
L8601
C8603
C8527
R441 R443
C411 Q411
L8533
h
tt p
C8601
R8525
VR450
C8525
C450
2
3
1
Q8530
R450
R455
6
R8522
C8522
3
D8601
R8531
C421
TP3703
VR444 VR441
VR471
VR435
C454
R451
R456
VR421
VR419
GM950EI007-O
216-246MHz Main Board Solder Side
PCB No. 8485664Z02
6.4-2
216-246MHz 80ch Closed Controller Schematic Diagram
MIC_PTT
R118
4.7K
+5V
+2V5
R161
100K
R163
100K
U105-2
+5V
SPI_MISO
+5V
C112
1000pF
PA_DISABLE
PA_ENABLE_5
+5V
FLT_A+
J0101
D101
FLT_A+ 17
+5V 9
R103
10K
15
10
11
13
12
6
C125
0.1uF
BUS+
LED_CE
3
+5V
C127
0.1uF
9
8
R137
47K
R134
10K
R153
4.7K
RSSI
12
11
14
13
4
MIC
16
14
1
2
18
+5V
R152
10K
R151
10K
GND
16
VCC
GND
C198
470pF
C196
470pF
C152
1uF
C150
0.47uF
+5V
C176
3.3uF
VCC
U104-5
GND
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
15
14
13
12
11
10
9
7
R187
0
R186
27K
R185
30K
9
11
C146
56pF
FLT_RX_AUDIO
EEPROM_CE
AFIC_CE
DAC_CE
FRACN_CE
OPTION_BD_CE
LED_CE
9V3
DET_AUDIO
R157
15K
+5V
5
7
8
6
RX_AUDIO_SEND
GP3
GP5
GROUND
SPI_CLCK_SRC
EEPROM_CE
RSSI_BUF
R145
30K
J0103
6
C142
0.1uF
4
7
R143
47K
5
AUX_RX_IN
11
VAG
9V3
9V3
U106-2
R156
0
C132
0.1uF
UNATTEN_RX_OUT
9V3
R171
47.5K
SPI_MISO
R172
47.5K
VAG
2
3
C171
10uF
4 U105-1
1
TX_AUDIO_RET
TX_AUDIO_SEND
RX_AUDIO_RET
UNATTEN_RX_OUT
R155
68K
C194
470pF
TP111
R154
10K
9
C154
0.1uF
RX_AUDIO
8
U105-3 11
VAG
1
3
2
4
C155
33pF
4
VAG_5
U108
DAC_CE
SPI_DATA_SRC_5
SPI_DATA_SRC
SPI_CLCK_SRC_5
SPI_CLCK_SRC
SPI_CLCK_SRC
L194
270nH SPI_CLK_5
SPI_CLCK_SRC
SPI_CLK
L195
SPI_DATA_5
270nH
SPI_MOSI
SPI_DATA
FRACN_CE_5
FRACN_CE
FRACN_CE
C145
1000pF
R144
47K
R142
1K
C141
10uF
+5V
DAC_CE_5
SPI_MOSI
R146
0
LCD_CE
9V3
DAC_CE
9V3
R141
100
11
R149
0
DET_AUDIO_5
(GP3) J0103_7
(GP5) J0103_8
C191
0.1uF
6
1 CLK_S
3 EN_CS
2
SO
7 WP
HOLD
5
SI
13 U104-4
4
8
10
VAG
12
C147
1000pF
J0103
R160
100
C134
0.1uF
7
C184
1uF
R147
180K
R148
470K
U106-3
C157
470pF
+5V
R191
10K
SPI_MOSI
INT_SPKR+
R189
82K
VR160
U106-4
C199
470pF
C185
100pF
R188
0
C101
0.1uF
6
4 EN_CS1
5 EN_CS2
EN_CS3
U102
1
2 A0
3 A1
A2
RSSI_5
C151
470pF
MIC
HANDSET_AUDIO
INT_SPKR+
C175
1000pF
C156
47uF
C137
.01uF
HIGH_LOW_BAND_5
HIGH_LOW_BAND
AUDIO_PA_ENABLE
B+_CONTROL
SQ_ATT_OUT_5
SQ_ATT_OUT
MOD_IN_5
MOD_IN
R173
0
R175
150K
R130
0
+5V
R101
10K
C133
0.1uF
Q137
R150
51K
5
2
3
40
39
9
18
R181
30K
19
20 R182
36 10K
C173
29
27 1uF
25
24
23
22
21
RESET
34
TP109
TP110
C149
33pF
R138
4.7K
MIC_PTT
Q138
R184
30K
R127
200K
U104-3 10
LCD_CE
C153
0.1uF
2_1MHZ
C182
0.1uF
e
t
HOOK 3
MIC_PTT 4
U104-2 5
C181
0.1uF
R125 +5V
200K
R126
200K
1
U104-1 2
4
6
LED_CLCK_BUF 5
LCD_CLCK_BUF 8
7
GND 19
20
C126
0.1uF
SPI_MOSI
SPI_CLCK_SRC
PBIAS
GCB4
PL_CLK
GCB5
SERIAL_CLK U103
GCB3
SERIAL_DATA
GCB1
WDT_DISABLE
PRE_EMPHASIS
AUX_RX
SQ_ATTEN_OUT
RX_IN
4BIT_ATTEN_OUT
PL
5BIT_ATTEN_OUT
TX_IN
XTAL_OUT
VAG_VOLUME
TIMING_CAP
EXT_ALERT
PL_DECODER
AUX_TX
PL_CAP
4BIT_ATTEN_IN
DPL_CAP
5BIT_ATTEN_IN
RX_OUT
SQ_ATTEN_IN
UNATTEN_RX
VAG_BYPASS
TX_OUT
XTAL_IN
RESET
CHIP_SELECT
R131
0
11 U106-1
PB4 (GP5_OUT)
PB5 (GP3_OUT)
K9V1_ENABLE
PB7 (GP6_OUT)
1
6
8
.
n
R104
33K
3
+2V5
K9V1_ENABLE_5
R139
240K
2_1MHZ_5
C174
0.1uF
1
47K
R128
10K
R100
0
2
d
i
o
R120
10K
FLAT_TX_AUDIO
33K
4
AFIC_CE
C148
470pF
4
Z 9
C
VEE
12
11
10
9
8
7
6
5
8
PB0_A8
PB1_A9
PB2_A10
PB3_A11
PB4_A12
PB5_A13
PB6_A14
PB7_A15
R135
C197
470pF
7
PD0_RXD
PD1_TXD
PD2_MISO
PD3_MOSI
PD4_SCK
PD5_SS*
+5V
TP105 TP104
BUS+
ANALOG_1
ANALOG_2
ANALOG_3
LED_CE
SPI_DATA_BUF
47
50
51
52
53
54
R136
VCC 16
C110
470pF
C111
470pF
C109
470pF
PC5 (GP5_IN)
Z1
SQ_ATT_IN
15
Y
10
B
8
R112
68K
3
C122
4700pF
PC0 (GP2_OUT)
PC1 (GP1_IN)
PC2 (GP3_IN)
PC3 (GP6_IN)
VCC
LOCK_DET_5
LOCK_DET
34
36
37
38
39
40
41
42
R123
100K
1
5 Y1
Z0
14
4 R124
6.8K
13
GND
FAST_SQ
PC0_AD0
PC1_AD1
PC2_AD2
PC3_AD3
PC4_AD4
PC5_AD5
PC6_AD6
PC7_AD7
11
12
4
FAST_SQ_5
PE0_AN0
PE1_AN1
PE2_AN2
PE3_AN3
PE4_AN4
PE5_AN5
PE6_AN6
PE7_AN7
C121
.039uF
+2V5
(SOURCE)
SQ_ATT_IN_5
14
X 11
A
13
X1
2
Y0
U105-4
+2V5
X0
.m
y
r
a
13
15
17
19
(IGNITION_SENSE)
PE3
14
BATTERY_VOLTAGE
16
18
VLTG_LIMIT
20
PA2 (GP4_IN) R121
160K
R122
68K
12
U107
6
EN
w
R111
33K
CSQ_DET
1
64
63
62
59
58
57
56
8 GND
27
MODA_LIR*
25
MODB_VSTBY
NC1
NC2
NC3
NC4
NC5
TP106
PA0_IC3
PA1_IC2
PA2_IC1
PA3_OC5_OC1
PA4_OC4_OC1
PA5_OC3_OC1
PA6_OC2_OC1
PA7_PA1_OC1
C102
470pF
2
3
4
26
32
C103
3.3uF
U101
46 IRQ
45 XIRQ
43 RESET
USW_+5V_CL
CSQ_DET_5
35
44
48
60
61
31
EXTAL
33
XTAL
C131
0.1uF
w
R102
4.7K
CLK_E
ADAPT_5
ADAPT
STRA_AS 28
30
STRB_RW*
23 VSS1
24 VSS2
49 VSS3
R106
2.2K
C104
.01uF
R119
1K
NC6
NC7
NC8
NC9
NC10
29
+5V
AUX_RX_IN
R108
47K
RESET
32
31
30
4
6
7
8
10
11
12
13
14
15
16
28
35
33
SPI_CLCK_SRC
SPI_MOSI
R110
10K
C105
0.1uF
+5V R105
10K
VDD 55
VRH 22
VRL 21
TP107
+5V
:/
/
w
R107
100
R109
47K
R183
10K
C163
0.1uF
+5V
C117
33pF
C161
0.1uF
17
UNATTEN_RX_OUT
6
14
1
R166
10K
C115
22pF
5
4
VDDH2
7
C162
0.1uF
NC
IN
C114
33pF
C170
1uF
37
11
1
R165
47K
Q161
R162
10K
VDDL 38
R167
47K
C116
3.6pF
TP108
L170
33uH
R164
NU
h
tt p
Y114
C164
4700pF
Q114
GND
2
+5V
VR118
VDDH1
R113
10K
R114
4.7K
L114
33uH
OUT 4
GND1
3
R115
1.8MEG
+5V +5V
R117
270
C119
470pF
R116
270
C118
470pF
SPI_MISO
J0102_3 (GP6)
SPI_MOSI
OPTION_BD_CE
SPI_CLCK_SRC
J0102_7 (GP4)
+5V
26
J0102
1
2
3
4
5
6
7
8
10
VAG
11
C172
1uF
GM950EI006-O
R192
0
1 of 2
6.4-3
Controller
Parts List
Circuit
Ref
Motorola
Part No.
Circuit
Ref
C0151
Description
Motorola
Part No.
2113741F17
Controller_IO
Parts List
Description
470pF 50V
C0152
2311049A07
TANT CP 1uF 10% 16V
Circuit
Ref
Circuit
Ref
Motorola
Part No.
Description
Motorola
Part No.
Description
C0464
2113741F17
470pF 50V
C0471
2113741F17
470pF 50V
2113743E20
0.1uF, 10%
C0153
2113743E20
0.1uF, 10%
C0401
2113743A19
100nF 16V
C0472
2113741F17
470pF 50V
C0102
2113741F17
470pF 50V
C0154
2113743E20
0.1uF, 10%
C0402
2113741F37
3.3nF 50V
D0101
4813833C02
C0103
2311049A42
C0155
2113740F39
33pF 5% 50V
DIODE DUAL SOT
MMBD6100
C0404
2311049A99
470pF 50V
10nF 50V
2113741F17
0902636Y01
2113741F49
C0157
J0101
C0104
C0405
2113741F25
0.1uF, 10%
2113743E20
0.1uF, 10%
0904424J06
2113743E20
C0161
J0102
C0105
C0406
2113741F25
CONNECTOR, DOUBLE
ROW
C0109
2113741F17
470pF 50V
C0162
2113743E20
0.1uF, 10%
C0407
2109720D14
CER LOW DIST 100nF
J0103
0904424J06
C0110
2113741F17
470pF 50V
C0163
2113743E20
0.1uF, 10%
C0411
2113741F49
10nF 50V
CONNECTOR, DOUBLE
ROW
C0111
2113741F17
470pF 50V
C0164
2113741F41
4.7nF 50V
C0412
2113741F17
470pF 50V
J0400
2804503J01
C0112
2113741F25
1nF 50V
C0170
2311049A07
TANT CP 1uF 10% 16V
C0413
w
10nF 50V
L0114
2460578C43
C0114
2113740A41
33pF 5% 50V
C0171
2311049J23
TANT CP 10uF 10% 6V
C0414
2113741F17
470pF 50V
L0170
2462587K26
CHIP IND 33000 NH
C0115
2113740A37
22pF 5% 50V
C0172
2311049A07
TANT CP 1uF 10% 16V
C0419
2113741F25
1nF 50V
L0194
2462587Q40
COIL CHIP 270nH
C0116
2113740G16
Ceramic Chip 3.6 P
C0173
2311049A07
TANT CP 1uF 10% 16V
C0420
2113741F25
1nF 50V
L0195
2462587Q40
COIL CHIP 270nH
C0117
2113740A41
33pF 5% 50V
C0174
2113743E20
0.1uF, 10%
C0421
2113741F17
470pF 50V
L0401
2484657R01
Ferrite Bead
C0118
2113741F17
470pF 50V
C0175
2113741F25
1nF 50V
C0422
2113741F17
470pF 50V
L0402
2484657R01
Ferrite Bead
C0119
2113741F17
470pF 50V
C0181
2113743E20
0.1uF, 10%
C0431
2113741F17
470pF 50V
Q0114
4880214G02
MMBT3904
C0121
2113743K05
39nF 16V
C0182
2113743E20
0.1uF, 10%
C0435
2113741F49
10nF 50V
Q0137
4880048M01
C0122
2113741F41
4700pF
C0184
2311049A07
TANT CP 1uF 10% 16V
C0436
2113741F17
470pF 50V
Q0138
4880048M01
C0125
2113743E20
0.1uF, 10%
C0185
2113740F51
100pF 5% 50V
C0438
2113741F49
10nF 50V
Q0161
4880214G02
MMBT3904
C0126
2113743E20
0.1uF, 10%
C0191
2113743E20
0.1uF, 10%
C0439
2113741F17
470pF 50V
Q0401
4880214G02
MMBT3904
C0127
2113743E20
0.1uF, 10%
C0194
2113741F17
470pF 50V
C0441
2113741F49
10nF 50V
Q0411
4880214G02
MMBT3904
C0131
2113743E20
0.1uF, 10%
C0196
2113741F17
470pF 50V
C0442
2113741F17
470pF 50V
Q0412
4880048M01
C0132
2113743E20
0.1uF, 10%
C0197
2113741F17
470pF 50V
C0444
2113741F17
470pF 50V
Q0421
4880048M01
C0133
2113743E20
0.1uF, 10%
C0198
2113741F17
470pF 50V
C0445
2311049A05
Q0431
4880048M01
C0134
2113743E20
0.1uF, 10%
C0199
2113741F17
470pF 50V
C0446
2113741F17
470pF 50V
Q0432
4880048M01
C0137
2113741F49
10nF 50V
C0450
2311049A99
47uF
Q0433
4880214G02
MMBT3904
C0141
2311049J26
C0451
2113741F17
470pF 50V
Q0442
4880052M01
TSTR NPN DRLNGTN
C0142
2113743A19
100nF 16V
C0454
2113741F17
470pF 50V
Q0461
4880048M01
C0145
2113741F25
1nF 50V
C0455
2113741F17
470pF 50V
Q0462
4880214G02
MMBT3904
C0148
2113741F17
470pF 50V
C0461
2113741F49
10nF 50V
Q0471
4880048M01
C0149
2113740F39
33pF 5% 50V
C0462
2113741F17
470pF 50V
R0101
0662057A73
10k 1/16W 5%
C0150
2311049A05
C0463
2113741F49
10nF 50V
R0102
0662057A65
4k7 1/16W 5%
47uF
1nF 50V
1nF 50V
:/
/
w
2113741F49
w
.m
y
r
a
d
i
o
1
6
8
.
n
e
t
6.4-4
h
tt p
C0101
216-246MHz 80ch Closed Controller_IO Schematic Diagram
+5V
+5V
+5V
(GP5)
PC5
Q461
C461
.01uF
R412
4.7K
PC2
R411
10K
R464
10K
PB4
C412
470pF
h
tt p
R414
270
VR464
C464
470pF
47K
47K
47K
R463
270
Q431
47K
47K
VR411
PB5
C463
.01uF
C411
.01uF
Q411
D471
:/
/
w
R415
0
EMERGENCY_CONTROL
J0103_8
J0103_7
C462
470pF
C414
470pF
+5V
(GP6)
R471
0
Q432
47K
C435
.01uF
47K
VR435
R435
270
C436
470pF
R438
10K
J0102_7
Q433
J0102_3
1
6
8
.
n
C439
470pF
R401
4.7K
FLT_A+
C407
0.1uF
C401
0.1uF
RX_AUDIO
C402
3300pF
VCC
+5V
Q401
2
AUDIO_PA_ENABLE
C404
47uF
C403
0.1uF
GND2
INV
OUT1 4
NINV
RR
M_SS OUT2 6
GND1
R405
10K
9
1
3
8
L401
C441
.01uF
VR441
R444
270
BUS+
C444
470pF
VR444
C472
470pF
VR471
JO40D
FLAT_TX_AUDIO
C445
0.47uF
R427
0
C446
470pF
R446
100K
C450
47uF
+5V
C454
470pF
R456
0
9V3
R450
560
(IN)
(OUT)
BUS+
GP3 (IN/OUT)
GP5 (IN/OUT)
GP6 (IN/OUT)
RSSI
EXT_SPKR+
IGNITION
GP4 (IN)
FLAT_TX_AUDIO
FLT_RX_AUDIO
ANALOG_GND/SW_B+
GROUND
R455
0
FLT_A+
Q481
FLT_RX_AUDIO
R426
47K
VR450
R451
100K
R481
1K
C451
470pF
D481
R482
560
Q421
Q482
R454
1K
FLT_A+
47K
VR419
3
4
6
8
12
14
15
16
1
2
10
9
5
11
13
7
VR421
C421
470pF
VR445
PE3
(IGNITION_SENSE)
C405
1000pF
RSSI_BUF
47K
L402
R423
4.7K
C420
1000pF
R422
10K
1000pF
C406
VR420
C455
470pF
D482
VR454
IGNITION_CONTROL
C422
470pF
INT_SPKR-
C442
470pF
Q442
R477
3.3K
R478
0
R476
270
5
R404
10K
R406
22K
U401
7
SW_B+
R407
15K
Q441
MIC
C419
1000pF
e
t
R402
1K
R443
4.7K
R442
4.7K
PC0
47K
d
i
o
C438
.01uF
47K
Q471
R473
68K
R441
10K
FLT_A+
C471
470pF
PB7
R439
0
w
R437
4.7K
.m
y
r
a
PC3
PA2
+5V
VR431
R475
4.7K
R474
47K
R472
0
C431
470pF
(GP3)
FLT_A+
w
(GP4)
+5V
R436
47K
R432
4.7K
PC1
(GP3)
Q412
C413
.01uF
47K
R465
0
(GP3)
R413
47K
R462
4.7K
R461
47K
+5V
R431
47K
R483
1.5K
R425
10K
VR422
INT_SPKR+
9V3
FLT_A+
+5V
9V3
GM950EI009-O
FLT_A+
+5V
2 of 2
6.4-5
Circuit
Ref
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
0662057A73
10k 1/16W 5%
R0142
0662057A49
1k 1/16W 5%
R0405
0662057A73
10k 1/16W 5%
R0104
0662057A85
33k 1/16W 5%
R0143
0662057A89
47k 1/16W 5%
R0406
0662057A81
22k 1/16W 5%
R0105
0662057A73
10k 1/16W 5%
R0144
0662057A89
47k 1/16W 5%
R0407
0662057A77
15k 1/16W 5%
R0106
0662057A57
2k2 1/16W 5%
R0145
0662057A84
30k 1/16W 5%
R0411
0662057A73
10k 1/16W 5%
R0107
0662057A25
100 1/16W 5%
R0147
0662057B04
180k 1/16W 5%
R0412
0662057A65
R0108
0662057A89
47k 1/16W 5%
R0148
0662057B14
470k 1/16W 5%
R0413
0662057A89
R0109
0662057A89
47k 1/16W 5%
R0149
0662057B47
0 1/16W
R0414
0662057A35
R0110
0662057A73
10k 1/16W 5%
R0150
0662057A90
51k 1/16W 5%
R0422
0662057A73
10k 1/16W 5%
R0111
0662057A85
33k 1/16W 5%
R0151
0662057A73
10k 1/16W 5%
R0425
0662057A73
R0112
0662057A93
68k 1/16W 5%
R0152
0662057A73
10k 1/16W 5%
R0426
R0113
0662057A73
10k 1/16W 5%
R0154
0662057A73
10k 1/16W 5%
R0427
R0114
0662057A65
4k7 1/16W 5%
R0155
0662057A93
68k 1/16W 5%
R0431
R0115
0662057B28
1.8M 1/16W 5%
R0156
0662057B47
0 1/16W
R0116
0662057A35
270 1/16W 5%
R0157
R0117
0662057A35
270 1/16W 5%
0662057A77
0662057A84
15k 1/16W 5% (12.5kHz)
30k 1/16W 5% (20/25kHz)
R0161
0662057A97
100k 1/16W
R0162
0662057A73
10k 1/16W 5%
R0163
0662057A97
100k 1/16W
R0165
0662057A89
47k 1/16W 5%
R0166
0662057A73
10k 1/16W 5%
R0167
0662057A89
47k 1/16W 5%
R0171
0662057R92
47.5k .1W 1%
R0172
0662057R92
47.5k .1W 1%
R0175
0662057B02
150k 1/16W
R0181
0662057A84
30k 1/16W 5%
R0182
0662057A73
10k 1/16W 5%
R0183
0662057A73
10k 1/16W 5%
R0184
0662057A84
30k 1/16W 5%
R0186
0662057A83
0662057A90
27k 1/16W 5% (12.5kHz)
51k 1/16W 5% (20/25kHz)
R0124
R0125
R0127
R0128
R0134
R0135
0662057A69
0662057B05
0662057B05
0662057B05
0662057A73
0662057A73
0662057A89
100k 1/16W
6k8 1/16W 5%
200k 1/16W
200k 1/16W
200k 1/16W
10k 1/16W 5%
10k 1/16W 5%
47k 1/16W 5%
e
t
R0126
0662057A97
68K
U0103
5105165R77
CHIP CAR 40 PIN W/63G
U0104
5105492X36
74AC08 4 AND GATES
U0105
5183222M49
IC QUAD OPAMP_3403_
U0106
5183222M49
IC QUAD OPAMP_3403_
U0107
5184704M60
IC-CMOS 04M60 ANALOS
U0108
5105462G78
IC EEPROM !&K SPEI
CMOS
10k 1/16W 5%
U0401
5109699X01
AUDIO PA TDA1915C
0662057A89
47k 1/16W 5%
VR0118
4813830A14
DIODE 5.1V 5% 225mW
0 1/16W
VR0411
4813830A27
DIODE 14V 5% 225mW
0662057A89
47k 1/16W 5%
VR0421
4813830A27
DIODE 14V 5% 225mW
R0432
0662057A65
4k7 1/16W 5%
VR0422
4813830A14
DIODE 5.1V 5% 225mW
R0435
0662057A35
270 1/16W 5%
VR0431
4813830A27
DIODE 14V 5% 225mW
R0436
0662057A89
47k 1/16W 5%
VR0435
4813830A27
DIODE 14V 5% 225mW
R0437
0662057A65
4k7 1/16W 5%
VR0441
4813830A40
SOC23 AUTO SDN
R0438
0662057A73
10k 1/16W 5%
VR0444
4813830A14
DIODE 5.1V 5% 225mW
R0441
0662057A73
10k 1/16W 5%
VR0445
4813830A27
DIODE 14V 5% 225mW
R0443
0662057A65
4k7 1/16W 5%
VR0450
4813830A27
DIODE 14V 5% 225mW
R0444
0662057A35
270 1/16W 5%
VR0454
4813830A27
DIODE 14V 5% 225mW
R0446
0662057A97
100k 1/16W
VR0464
4813830A27
DIODE 14V 5% 225mW
R0450
0662057A43
560 1/16W 5%
VR0471
4813830A40
SOC23 AUTO SDN
R0451
0662057A97
100k 1/16W
Y0114
4880113R01
CRYSTAL 7.9488
R0454
0662057A49
1k 1/16W 5%
R0455
0662057B47
0 1/16W
R0461
0662057A89
47k 1/16W 5%
R0462
0662057A65
4k7 1/16W 5%
R0463
0662057A35
270 1/16W 5%
R0464
0662057A73
10k 1/16W 5%
h
tt p
R0123
0662057A93
160k 1/16W 5%
1
6
8
.
n
R0122
0662057B03
10k 1/16W 5%
IC 10F8 DCDR/REMUX
74HC138
4k7 1/16W 5%
47k 1/16W 5%
270 1/16W 5%
:/
/
w
R0121
0662057A73
1k 1/16W 5%
5113805A30
0662057B47
w
R0120
0662057A49
4k7 1/16W 5%
d
i
o
R0119
0662057A65
R0136
0662057A85
33K 1/16W 5%
R0137
0662057A89
47k 1/16W 5%
R0189
0662057A95
82K
R0472
0662057B47
0 1/16W
R0138
0662057A65
4k7 1/16W 5%
R0401
0662057A65
4k7 1/16W 5%
R0474
0662057A89
47k 1/16W 5%
R0139
0662057B07
240k 1/16W
R0402
0662057A49
1k 1/16W 5%
R0475
0662057A65
4k7 1/16W 5%
R0141
0662057A25
100 1/16W 5%
R0404
0662057A73
10k 1/16W 5%
U0101
5102898X66
64MC68HC711E20
6.4-6
Description
U0102
.m
y
r
a
R0118
Motorola
Part No.
w
R0103
Circuit
Ref
216-246MHz Supply Voltage Schematic Diagram
FLT_A+
USW_+5V
R621
2.2K
FLT_A+_8
+5V
USW_+5V_CL
FLT_A+
D621
h
tt p
C621
470pF
C622
47uF
VR621
C604
33uF
R602
7.5K
C605
0.1uF
R631
10
D631
.m
y
r
a
R603
1.2K
Q601
R604
1K
w
R632
10
R605
6.8K
C631
0.1uF
C632
33uF
9V3_8
9V3
U631
8
1
INPUT
OUTPUT
7
5
FEEDBACK
ERROR
3
2
SHUTDOWN
SENSE
6
5V_TAP
+5V
C633
.022uF
GND
ADJ
1
9V3
9V3_1_8
C634
47uF
C635
0.1uF
4
ON_OFF
5
3
C602
0.1uF
R601
10K
VOUT
w
C601
470pF
C603
10uF
2
VIN
GND
4
:/
/
w
R606
0
U601
d
i
o
RESET
1
6
8
.
n
SW_B+
SW_B+_8
SW_B+
C613
470pF
ON_OFF_CONTROL
BATTERY_VOLTAGE
R642
10K
R614
1K
B+_CONTROL
e
t
Q611
R641
30K
C641
0.1uF
VR641
IGNITION_CONTROL
D611
C611
47uF
EMERGENCY_CONTROL
+5V
+5V
GM950EI010-O
6.4-7
Supply Voltage
Parts List
Circuit
Ref
Circuit
Ref
Motorola
Part No.
Description
Motorola
Part No.
Description
R0614
0662057A49
1k 1/16W 5%
R0615
0662057A73
10k 1/16W 5%
2113741F17
470pF 50V
R0616
0662057A73
10k 1/16W 5%
C0602
2113741B69
0.1uF
R0617
0660076A61
3300 5 1/8
C0603
2380090M24
LYT 10uF 50V 20%
R0621
0662057A57
2k2 1/16W 5%
C0604
2311049A97
33uF
R0631
0662057A01
10 1/16W 5%
C0605
2113743E20
0.1uF, 10%
R0632
0662057A01
10 1/16W 5%
C0611
2311049A99
47uF
R0641
0662057A84
30k 1/16W 5%
C0612
2113743K15
100nF 16V
R0642
0662057A73
10k 1/16W 5%
C0613
2113741F17
470pF 50V
U0601
5105625U25
IC 9.3V REG 2941
C0621
2113741F17
470pF 50V
U0631
5105469E65
IC VLTG REGLTR LP2951C
C0622
2311049A99
47uF
VR0621
4813830A14
5.1V 5% 225mW
C0631
2113743E20
0.1uF, 10%
VR0641
4813830A14
5.1V 5% 225mW
C0632
2311049A97
33uF
C0633
2113743E07
22nF 16V
C0634
2311049A99
47uF
C0635
2113743E20
0.1uF, 10%
C0641
2113743E20
0.1uF, 10%
D0611
4813833C02
DUAL SOT MMBD6100
D0621
4813833C02
DUAL SOT MMBD6100
D0631
4813833C02
DUAL SOT MMBD6100
Q0601
4880214G02
MMBT3904
Q0611
4805921T02
FMC2A
Q0612
4813824A10
NPN 40V
R0601
0662057A73
10k 1/16W 5%
R0602
0660076E70
FILM 7500
R0603
0660076E51
FILM 1200
R0604
0662057A49
1k 1/16W 5%
R0605
0662057A69
6k8 1/16W 5%
R0606
0662057B47
0 1/16W
R0611
0662057A51
1k2 1/16W 5%
R0612
0660076A61
3300 5 1/8
R0613
0660076A61
3300 5 1/8
:/
/
w
w
w
.m
y
r
a
d
i
o
1
6
8
.
n
e
t
6.4-8
h
tt p
C0601
216-246MHz Power Control Schematic Diagram
VAG_7
(CNTL) VAG
C705
4700pF
R705
12K
C711
.039uF
R702
47K
PWR_DETECT_7
6
(PA) PWR_DETECT
R704
47K
4
U701-3
7
R701
68K
9
5
4
PWR_CNTL_7
8
R711
22K
11
C701
100pF
R712
0
PWR_CNTL (PA)
10
11
C702
100pF
U701-2
C713
100pF
9V3
h
tt p
C712
43pF
PA_PWR_SET
R716
560K
U701-4
R703
10K
R714
12K
11
R717
33K
12
4
Q711
R713
3.3K
VAG
9V3
w
R725
10K
D721
C722
100pF
10K
3
R722
C721
100pF
R724
100K
1
(PA) PA_TEMP
22K
C723
100pF
.m
y
r
a
11 U701-1
PA_TEMP_7
R723
2
4
47K
C731
0.1uF
9V3
C703
0.1uF
SW_B+_7
16
(SV) SW_B+
R718
68K
IF2
VLTG_LIMIT (CNTL)
1
(CNTL) SPI_DATA_SRC
D_IN
1
6
8
.
n
8
NC
9
NC1
U731
68K
D732
R720
100K
R738
47K
BIAS_VLTG_2_7
BIAS_VLTG_2
R736
15K
Q732
C738
0.22uF
R733
47K
2
Q1
4
Q2
11
Q3
13
Q4
3
R1
5
R2
12
R3
14
R4
GND
SPI_DATA_SRC_7
EN
R719
9V3
D_OUT
BIAS_VLTG_7
BIAS_VLTG (PA)
C732
100pF
D731
R732
4.7K
C733
0.22uF
15
R737
1K
7
6
(CNTL) DAC_CE
CLK
VDD
10
DAC_CE_7
(CNTL) PA_ENABLE
R734
4.7K
d
i
o
SPI_CLCK_SRC_7
(CNTL) SPI_CLCK_SRC
PA_ENABLE_7
C716
2200pF
R715
22K
w
R731
22K
R721
13
C714
0.1uF
9V3_7
(SV) 9V3
:/
/
w
14
FE_CNTL_VLTG_7
FE_CNTL_VLTG (FE)
Q731
10K
R735
e
t
D733
9V3
Q742
K9V1_7
K9V1 (PA)
C741
100pF
R742
1K
Q741
R741
1K
GM950EI005-O
K9V1_ENABLE_7
(CNTL) K9V1_ENABLE
C742
0.1uF
6.4-9
Power Control
Parts List
Circuit
Ref
Circuit
Ref
Motorola
Part No.
Description
Motorola
Part No.
Description
R0713
0662057A61
3k3 1/16W 5%
R0714
0662057A75
12k 1/16W
2113740F51
100pF 5% 50V
R0715
0662057A81
22k 1/16W 5%
C0702
2113740F51
100pF 5% 50V
R0716
0662057B16
560k 1/16W 5%
C0703
2113743E20
0.1uF, 10%
R0717
0662057A85
33k 1/16W 5%
C0711
2113741A59
CL2
R0718
0662057A93
68k 1/16W 5%
C0712
2113740F42
43pF 5% 50V
R0719
0662057A93
68k 1/16W 5%
C0713
2113740F51
100pF 5% 50V
R0721
0662057A73
10k 1/16W 5%
C0714
2113743A19
100nF 16V
R0722
0662057A81
22k 1/16W 5%
C0716
2113741F33
2200pF
R0723
0662057A89
47k 1/16W 5%
C0721
2113740F51
100pF 5% 50V
R0724
0662057A97
100k 1/16W
C0722
2113740F51
100pF 5% 50V
R0725
0662057A73
10k 1/16W 5%
C0723
2113740F51
100pF 5% 50V
R0731
0662057A81
22k 1/16W 5%
C0731
2113743E20
0.1uF, 10%
R0732
0662057A65
4k7 1/16W 5%
C0732
2113740F51
100pF 5% 50V
R0733
0662057A89
47k 1/16W 5%
C0733
2113743A23
220nF 16V
R0734
0662057A65
4k7 1/16W 5%
C0736
2113743A23
220nF 16V
R0735
0662057A73
10k 1/16W 5%
C0741
2113740F51
100pF 5% 50V
R0736
0662057A77
15k 1/16W 5%
C0742
2113743E20
0.1uF, 10%
R0738
0662057A89
47k 1/16W 5%
D0721
4813833C02
DIODE DUAL SOT
MMBD6100
R0741
0662057A49
1k 1/16W 5%
R0742
0662057A49
1k 1/16W 5%
D0731D0733
4813833C02
DIODE DUAL SOT
MMBD6100
U0701
5183222M49
IC QUAD OPAMP __3403_
Q0711
4880214G02
MMBT3904
U0731
5113811G02
IC D/A CONV & BIT 4 CHAN
W/SPI
Q0731
4880048M01
Q0732
4805921T02
TSTR DUAL ROHM FMC2
Q0741
4880048M01
Q0742
4805128M27
TSTR PNP SOT89 BSR33
R0701
0662057A93
68k 1/16W 5%
R0702
0662057A89
47k 1/16W 5%
R0703
0662057A73
10k 1/16W 5%
R0704
0662057A89
47k 1/16W 5%
R0711
0662057A81
22k 1/16W 5%
R0712
0662057B47
0 1/16W
:/
/
w
w
w
.m
y
r
a
d
i
o
1
6
8
.
n
e
t
6.4-10
h
tt p
C0701
216-246MHz Power Amplifier 5-25W Schematic Diagram
h
tt p
:/
/
w
w
.m
y
r
a
w
100
120pF
75
62pF
39nF
36pF
150
120
30pF
1nF
75
13
91
75
62pF
20pF
d
i
o
1
6
8
.
n
12pF
e
t
38.13nH
38.13nH
38.13nH
20pF
22pF
15pF
GM950EI001-O
6.4-11
Power Amplifier 5-25W
Parts List
Circuit
Ref
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Description
C8554
2111078B18
HQ 15pF 5%
L8534
2484657R01
Ferrite Bead
R8541
0680194M01
10 1W 5%
C8556
2113741F25
1nF 50V
L8539
2460591M77
COIL SQUARE 38nH
R8550
0662057A73
10k 1/16W 5%
2113740F34
20pF 5% 50V
C8558
2113740F20
5.1pF 5% 50V
L8541
2460591X01
COIL SQUARE
R8551
0662057A73
10k 1/16W 5%
C8502
2113741F49
10nF 50V
C8600
2113740A67
330pF 5% 50V
L8542
2484657R01
Ferrite Bead
R8552
0662057A18
51 1/16W 5%
C8503
2113741F49
10nF 50V
C8602
2113740F51
100pF 5% 50V
2460591M77
COIL SQUARE 38nH
R8553
0683962T51
120 1W 5%
C8512
2113740F41
36pF 5% 50V
C8603
2113741F25
1nF 50V
L8551L8553
R8611
0662057A73
10k 1/16W 5%
L8600
2484657R01
R8612
0662057A56
2k 1/16W 5%
L8601
2484657R01
R8613
0662057A49
1k 1/16W 5%
L8611
2484657R01
Ferrite Bead
R8614
0662057A18
51 1/16W 5%
L8631
2462587T23
COIL CHIP 470nH
R8615
0662057A65
4k7 1/16W 5%
Q8510
4813827A26
R8616
0680194M01
10 1W 5%
Q8520
w
TSTR RF NPN MRF8372
4813827D13
4pin MRF557T
R8617
0680194M01
10 1W 5%
Q8530
4813827A36
TSTR MRF 5003
R8621
0662057A41
470 1/16W 5%
Q8531
4813827A36
TSTR MRF 5003
R8623
0662057C19
4R7 1/10W 5%
Q8540
4880225C30
TS TR MRF650
R8624
0662057C19
4R7 1/10W 5%
Q8611
4813824A17
TSTR PNP 40V .2A
R8641
0680149M02
Thermistor 100K @25C
Q8612
4880214G02
MMBT3904
SH8501
2602642Y01
Heat Spreader
Q8621
4813824A17
TSTR PNP 40V .2A
R8501
0662057C19
4R7 1/10W 5%
R8502
0662057A21
68 1/16W 5%
R8511
0662057A01
10 1/16W 5%
R8512
0662057A01
10 1/16W 5%
R8513
0662057A57
2k2 1/16W 5%
R8514
0662057C55
CHIP RES 150 5%
R8515
0662057C44
51 1/10W 5%
R8522
0662057A49
1k 1/16W 5%
R8523
0662057A49
1k 1/16W 5%
R8525
0662057C19
4R7 1/10W 5%
R8527
0662057C19
4R7 1/10W 5%
R8528
0662057A89
47k 1/16W 5%
R8529
0662057A89
47k 1/16W 5%
R8531
0680194M01
10 1W 5%
R8532R8535
0683962T51
120 1W 5%
C8514
C8522
C8523
C8524
C8528
C8529
C8530
2113741F25
2113740A50
2113740A50
2113741F25
2113740A55
2311049A01
2113741F49
10nF 50V
1nF 50V
62pF 5% 50V
62pF 5% 50V
1nF 50V
100pF
10nF 50V
C8612
C8615
C8617
C8618
C8619
C8620
C8621
C8622
C8623
2113741F49
2113741F49
2113741F25
2113740A67
2311049A08
2113740F51
2113740F29
2113741F25
2113741F49
2113740F51
10nF 50V
10nF 50V
1nF 50V
330pF 5% 50V
TANT CP 1uF
100pF 5% 50V
12pF
1nF 50V
10nF 50V
100pF 5% 50V
d
i
o
C8531
2113741F49
10nF 50V
C8611
2311049A45
.m
y
r
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C8527
2113741F49
30pF 5% 50V
C8604
w
C8525
2113740A40
3.3nF 50V
2113740A67
330pF 5% 50V
C8631
2113741F25
1nF 50V
C8534
2111078B31
36pF
C8632
2111078B44
120pF
C8535
2113740A59
150pF 5% 50V
C8633
2113740F36
24pF
C8536
2111078B39
HQ 75pF 5%
C8634
2113740F51
100pF 5% 50V
C8537
2111078B41
HQ 91pF 5%
C8642
2113741F25
1nF 50V
C8538
2113741A59
CL2
D8551
4802482J02
DIODE PIN MA/COM
C8539
2111078B05
HQ 4.7pF 5%
D8553
4813825A05
MMBD301
C8542
2111078B44
HQ 120pF 5%
D8601
4813832B35
DIODE TRANSORB
C8543
2111078B39
HQ 75pF 5%
D8631
4802482J02
DIODE PIN MA/COM
C8544
2111078B25
27pF
J8501
0905901V02
RF CONNECTOR
C8546
2113741A33
3.3nF 50V
J8601
0905902V04
POWER CONNECTOR
C8547
2111078B49
HQ 180pF 5%
L8501
2462587N48
39nH
C8548
2113741F49
10nF 50V
L8503
2462587T38
COIL CHIP 22nH 5%
C8551
2111078B36
56pF
L8531
2460591C23
SQUARE COIL 16nH 3T
C8552
2111078B21
HQ 20pF 5%
L8532
2484657R01
Ferrite Bead
C8553
2111078B22
HQ 22pF 5%
L8533
2460591C23
SQUARE COIL 16nH 3T
e
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6.4-12
1
6
8
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n
C8532
Ferrite Bead
Ferrite Bead
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C8521
2113741A33
h
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C8501
216-246MHz Synthesizer Schematic Diagram
h
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d
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680
GM950EI003-A
6.4-13
Synthesizer
Parts List
Circuit
Ref
Circuit
Ref
Motorola
Part No.
Motorola
Part No.
Description
R3705
0662057A73
0662057A89
10k 1/16W 5% (12.5kHz)
47k 1/16W 5% (20/25kHz)
R3708
0662057B47
0 1/16W
R3709
0662057A01
10 1/16W 5%
R3711
0662057A25
100 1/16W 5%
R3712
0662057A59
2k7 1/16W 5%
R3713
0662057A67
5.6k 1/16W
R3714
0662057B02
150k 1/16W
R3715
0662057A41
470 1/16W
R3716
0662057A49
1k 1/16W
R3717
0662057A25
100 1/16W 5%
R3718
0662057A25
100 1/16W 5%
Description
2113740F51
100pF 5% 50V
C3702
2113741F13
330pF 50V
C3703
2113743E20
0.1uF, 10%
C3704
2113741F49
10nF 50V
C3705
2113741F49
10nF 50V
C3706
2113743E20
0.1uF, 10%
C3707
2113741F49
10nF 50V (12.5kHz)
C3708
2113740F59
220pF 5% 50V (12.5kHz)
C3709
2113743K15
2113740F13
100nF 16V (12.5kHz)
2.7pF 5% 50V (20/25kHz)
C3710
2113740F43
47pF 5% 50V (20/25kHz)
R3723
0662057A73
10k 1/16W 5%
C3711
2311049J23
TANT CP 10uF 10% 6V
R3724
0662057B16
560k 1/16W 5%
C3712
2311049J26
U3701
5105457W72
CC CONT 5105191W59
C3713
2113741F25
1nF 50V
VR3701
4813830A23
10V 5% 20mA 350mW
C3716
2113743K15
100nF 16V
Y3701
4802081B71
C3717
2113743K15
100nF 16V
TEMPUS (20/25kHz)
C3718
2113743K15
100nF 16V
Y3702
4809863M01
TEMPUS (12.5kHz)
C3719
2311049A19
C3720
2113741F49
10nF 50V
C3722
2311049A07
1uF 10% 16V
C3723
2109720D14
100nF
C3725
2109720D14
100nF
C3726
2113741F49
10nF 50V
C3727
0811051A19
1uF 5%
D3701
4802233J09
Triple SOT143-RH (12.5kHz)
D3702
4805649Q04
Diode Varactor
(20/25kHz)
E3702
2605915V01
SHLD PCB MOUNT
R3701
0662057A35
270 1/16W 5%
R3702
0662057A35
270 1/16W 5%
R3703
0662057A49
1k 1/16W
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C3701
216-246MHz Voltage Controlled Oscillator Schematic Diagram
L3742
F
1uH
C3733
9V3_1_4
C3734
1pF
R3731
68
9V3_4
9V3
9V3
R3740
C
8.2pF
22
Ud
L3731
C3731
.001uF
C3743
0.1uF
68nH
D3731
R3742
39
C3744
.001uF
K9V1_4
K9V1
5V_STAB
C3736
18pF
C3780
9V3
G
C3771
R3763
150
U3741
0.1uF
D3732
L3733
1uH
D3739
L3732
C3745
470pF
.01uF
L3761
68nH
1uH
C3735
470pF
C3767
.01uF
C3764
D3733
C3740
5.6pF
C3765
R3765
270
C3762
5.6pF
2
Ud
D
L3750
1uH
C3755
10pF
D3754
R3751 S
27K
R3753
100
L3751
1uH
D3752
C3756
10pF
C3751
.01uF
C3774
13pF
R3776
39
R3781
100
C3781
.01uF
R3778
2.7K
L3783
56nH
C3785
7.5pF
R3785
10
TP3732
EXCITER_PA_4
C3777
470pF
EXCITER_PA
Q3780
R3777
150
R3775
270
L3781
22nH
R3779
1.5K
R3782
100
C3783
13pF
C3784
NU
C3786
NU
R3786
150
C3782
100pF
R3772
100
R3774
10
5V_STAB
C3758
.001uF
Q3751
1
6
8
.
n
D3751
39
G
C3772
100pF
d
i
o
R3754
C3754
24pF
L3752
12.5nH
R3769
1K
R3767
270
C3773
12pF
w
2.2K
4
C3752
20pF
100pF
.m
y
r
a
R3762
470
Q3752
R3752
3
22
Q3760
R3743
Q3742
4.7K
2DTC143ZK
B
Q3770
C3775
470pF
L3773
33nH
w
R3761
1.5K
C3766
R3766
12pF
Ud
1
L3768
120nH
5.6pF
L3741
1uH
C3761
6.8pF
5
R3768
2.7K
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D
C3739
5.6pF
L3734
22nH
R3771
150
C3763
R3739 S
27K
R3741
68
h
tt p
D
C3738
36pF
C3737
1pF
.001uF
C3792
.01uF
R3791
270
C3757
470pF
C3791
L3754
1uH
Q3790
C3790
16pF
R3792
2.7K
.01uF
C3793
270
VCO_MIXER_4
R3795
VCO_MIXER
470
e
t
R3793
1K
R3794
NU
E
GM950EI002-A
U3801
9V3
LP2951CM
8 INPUT
OUTPUT
7 FEEDBACK ERROR
R3801
22
3
C3801
.220uF
SHUTDOWN SENSE
5V_TAP
GND
4
5V_STAB_4
1
5
2
6
5V_STAB (SOURCE)
C3802
.022uF
C3803
10uF
E3731
E3732
6.4-15
Voltage Controlled Oscillator
Parts List
Circuit
Ref
Motorola
Part No.
Description
Circuit
Ref
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
C3777
2113741F17
470pF 50V
L3761
2462587T13
COIL CHIP 68nH
C3780
2113741F25
1nF 50V
L3768
2462587T16
COIL CHIP 120nH
2113741F25
1nF 50V
C3781
2113741F49
10nF 50V
L3773
2462587N47
COIL CHIP 33nH
C3733
2113740F25
8.2pF 5% 50V
C3782
2113740F51
100pF 5% 50V
L3781
2462587T38
16 IDCTR, 22nH
C3734
2113740F03
1pF 5% 50V
C3783
2113740F30
13pF 5%
L3783
2462587N50
COIL CHIP 56nH
C3735
2113741F17
470pF 50V
C3784
2113740F27
10pF 5%
Q3742
4805921T09
XSTR DUAL ROHM FMG8
C3736
2113740F33
18pF 5% 50V
C3785
2113740F24
7.5pF 5%
Q3751
4813823A05
C3737
2113740F03
1pF 5% 50V
C3790
2113740F32
16pF 5%
N-CH RF JFET
MMBU310LT1
C3738
2113740F40
36pF 5% 50V
C3791
2113741F49
10nF 50V
Q3752
4880214G02
MMBT3904
C3739
2113740F21
5.6pF 5% 50V
C3792
2113741F49
10nF 50V
Q3760
4813827A07
NPN SML SIG MMBR9
C3740
2113740F21
5.6pF 5% 50V
C3793
2113741F49
10nF 50V
Q3770
4813827A07
C3743
2113743K15
100nF 16V
C3801
2113743A23
220nF 16V
Q3780
w
NPN SML SIG MMBR9
4813827A07
NPN SML SIG MMBR9
C3744
2113741F25
1nF 50V
C3802
2113743E07
22nF 16V
Q3790
4813827A07
NPN SML SIG MMBR9
C3745
2113741F17
470pF 50V
C3803
2311049A63
R3731
0662057A21
68 1/16W 5%
C3751
2109720D01
LOW DIST 10nF
D3731
4805649Q13
VCTR 1SV228 SOT23
R3739
0662057A83
27k 1/16W 5%
C3752
2113740F34
20pF 5% 50V
D3732
4805649Q13
VCTR 1SV228 SOT23
R3740
0662057A09
22 1/16W 5%
C3754
2113740F36
24pF 5% 50V
D3733
4805649Q13
VCTR 1SV228 SOT23
R3741
0662057A21
68 1/16W 5%
C3755
2113740F27
10pF 5% 50V
D3739
4813825A05
MMBD301
R3742
0662057A15
39 1/16W 5%
C3756
2113740F27
10pF 5% 50V
D3751
4805649Q13
VCTR 1SV228 SOT23
R3743
0662057A65
4k7 1/16W 5%
C3757
2113741F17
470pF 50V
D3752
4805649Q13
VCTR 1SV228 SOT23
R3751
0662057A83
27k 1/16W 5%
C3758
2113741F25
1nF 50V
D3754
4813825A05
MMBD301
R3752
0662057A57
2k2 1/16W 5%
C3761
2113740F23
6.8pF 5% 50V
E3731
2602641Y02
SHIELD, ARIANE VCO
R3753
0662057A25
100 1/16W 5%
C3762
2113740F21
5.6pF 5% 50V
E3732
2605915V01
SHLD PCB MOUNT
R3754
0662057A15
39 1/16W 5%
C3763
2113741F49
10nF 50V
L3731
2462587T13
COIL CHIP 68nH
R3761
0662057A53
1k5 1/16W 5%
C3764
2113740F21
5.6pF 5% 50V
L3732
2462587T30
COIL CHIP 1uH
R3762
0662057A41
470 1/16W 5%
C3765
2113740F29
12pF 5% 50V
L3733
2462587T30
COIL CHIP 1uH
R3763
0662057A29
150 1/16W 5%
C3766
2113740F51
100pF 5% 50V
L3734
2462587N45
79 IDCTR, 22nH
R3765
0662057A35
270 1/16W 5%
C3767
2113741F49
10nF 50V X7R
L3741
2462587T30
COIL CHIP 1uH
R3766
0662057A09
22 1/16W 5%
C3771
2113743K15
100nF 16V
L3742
2462587T30
COIL CHIP 1uH
R3794
NU
NU
C3772
2113740F51
100pF 5% 50V
L3750
2462587T30
COIL CHIP 1uH
C3773
2113740F29
12pF 5% 50V
L3751
2462587T30
COIL CHIP 1uH
C3774
2113740F30
13pF 5% 50V
L3752
2484562T11
AIR COIL 12.5nH
C3775
2113741F17
470pF 50V
L3754
2462587T30
COIL CHIP 1uH
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C3731
216-246MHz RX-FE Schematic Diagram
3.9pF
h
tt p
1.5K
1.5K
C3351
11pF
C3353
11pF
11pF
C3355
11pF
D3312
w
33pF
w
D3311
:/
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NU
C3352
11pF
43pF
D3313
R3340
NU
R3341
NU
C3354
11pF
D3314
33pF
NU
39pF
10nH
GM950EI004-A
e
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8
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a
8.2nH
6.4-17
RX-FE
Parts List
Circuit
Ref
Motorola
Part No.
Circuit
Ref
Description
Motorola
Part No.
Description
D3303
4880154K03
Dual Schottky SOT23
D3311
4802245J22
VCTR IT363
Circuit
Ref
2113741F37
3.3nF 50V
D3312
4802245J22
VCTR IT363
C3301
2113740F28
11pF 5% 50V
D3313
4802245J22
VCTR IT363
C3302
2113740F24
7.5pF 5% 50V
D3314
4802245J22
VCTR IT363
C3303
2113741F37
3.3nF 50V
D3331
4880174R01
QUAD SOIC 8 PIN
C3304
2113740F45
56pF 5% 50V
L3302
2462587T23
COIL CHIP 470nH
C3305
2113740F39
33pF 5% 50V
L3331
2462587T23
COIL CHIP 470nH
C3306
2113740F42
43pF 5% 50V
L3332
2462587T17
COIL CHIP 150nH
C3307
2113741F37
3.3nF 50V
L3333
2462587N40
COIL CHIP 8.2nH 5%
C3308
2113741F25
1nF 50V
L3334
2462587N41
COIL CHIP 10nH 5%
C3309
2113741F13
330pF 50V
Q3301
4813827A07
NPN SML SIG MMBR9
C3310
2113741F13
330pF 50V
Q3302
4813824A17
MMBT3906
C3311
2113741F37
3.3nF 50V
R3300
0662057A55
1k8 1/16W 5%
C3312
2113741F25
1nF 50V
R3301
0662057A97
100k 1/16W
C3313
2113740F45
56pF 5% 50V
R3302
0662057A37
330 1/16W 5%
C3314
2113740F24
7.5pF 5% 50V
R3303
0662057A49
1k 1/16W 5%
C3315
2113740F45
56pF 5% 50V
R3304
0662057A53
1k5 1/16W 5%
C3316
2113740F39
33pF 5% 50V
R3306
0662057A35
270 1/16W 5%
C3317
2113740F39
33pF 5% 50V
R3307
0662057A21
68 1/16W 5%
C3319
2113741F25
1nF 50V
R3308
0662057A35
270 1/16W 5%
C3320
2113741F25
1nF 50V
R3309
0662057A97
100k 1/16W
C3322
2113741F49
10nF 50V
R3311
0662057A65
4k7 1/16W 5%
C3331
2113740F29
12pF 5% 50V
R3312
0662057A55
1k8 1/16W 5%
C3332
2113740F37
17pF 5% 50V
R3313
0662057A61
3k3 1/16W 5%
C3333
2113740F42
43pF 5% 50V
R3314
0662057A07
18 1/16W 5%
C3334
2113740F49
82pF 5% 50V
R3315
0662057A01
10 1/16W 5%
C3351
2113740F28
11pF 5% 50V
R3316
0662057A29
150 1/16W 5%
C3352
2113740F28
11pF 5% 50V
R3317
0662057A29
150 1/16W 5%
C3353
2113740F28
11pF 5% 50V
R3318
0662057A13
33 1/16W 5%
C3354
2113740F28
11pF 5% 50V
R3331
0662057A18
51 1/16W 5%
C3355
2113740F28
11pF 5% 50V
R3340
0662057B47
NU
D3300
4813833C02
DUAL SOT MMBD6100
R3341
0662057B47
NU
T3301
2505515V03
XFMR JEDI MIXER SMD 4:1
T3302
2505515V03
XFMR JEDI MIXER SMD 4:1
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Description
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C3300
Motorola
Part No.
216-246MHz RX-IF Schematic Diagram
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RX-IF
Parts List
Circuit
Ref
Circuit
Ref
Motorola
Part No.
Description
Motorola
Part No.
Description
D5201
4880154K03
Dual Schottky SOT23
FL5201
9180098D04
2113740F35
22pF 5% 50V
FL5202
9180097D04
C5201
2113740F19
4.7pF 5% 50V
L5201
2462587N69
CHIP IND 1200 NH
C5202
2113740F31
15pF 5% 50V
L5203
2483411T74
C5203
2113743A19
100nF 16V X7R
L5211
2483411T74
C5204
2113743A19
100nF 16V X7R
Q5201
4813827A07
MMBR941
C5205
2113740F33
18pF 5% 50V
R5201
0662057A73
10k 1/16W 5%
C5208
2113743A19
100nF 16V
R5202
0662057A85
33k 1/16W 5%
C5211
2113740F31
15pF 5% 50V
R5203
0662057A69
6k8 1/16W 5%
C5212
2113740F31
15pF 5% 50V
R5204
0662057A25
100 1/16W 5%
C5213
2113740F40
36pF 5% 50V
R5205
0662057A56
2k 1/16W 5%
C5214
2113740F17
3.9pF 5% 50V
R5207
0662057B47
0 1/16W
C5220
2113741F49
10nF 50V
R5211
0662057A47
820 1/16W 5%
C5221
2311049A63
TANT CP 10uF
R5212
0662057A67
5k6 1/16W 5%
C5222
2113743A23
0.22uF
R5216
0662057A73
0662057A65
10k 1/16W 5% (12.5kHz)
4k7 1/16W 5% (20/25kHz)
C5223
2113743E20
100nF 16V
R5221
0662057B02
150k 1/16W
C5224
2113741F29
1.5nF 50V
R5222
0662057A97
100k 1/16W 5%
C5225
2311049J11
R5223
0662057A83
27k 1/16W 5%
C5226
2113743K07
47nF 16V
R5224
0662057A76
13k 1/16W 5%
C5227
2311049J11
R5225
C5228
2113743K15
100nF 16V
0662057A25
0662057A57
100 1/16W 5% (12.5kHz)
2k2 1/16W 5% (20/25kHz)
C5229
2113741F41
4.7nF 50V
U5201
5180207R01
IF IC
C5230
2113741F49
10nF 50V
Y5201
9102651Y01
C5231
2311049A07
TANT CP 1uF 10% 16V
C5232
2113740F51
100pF 5% 50V
XTAL FLTR 45.1MHZ
12.5KHz 80dB
XTAL FLTR 45.1MHZ
20/25KHz 80dB
C5233
2113740F51
100pF 5% 50V
C5234
2113743K15
100nF 16V
C5235
2113740F51
100pF 5% 50V
C5236
2113740F51
100pF 5% 50V
C5237
2113743K15
100nF 16V
C5238
2113743K15
100nF 16V Y5V
C5239
2113740F44
51pF 5% 50V
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9102652Y02
Y5211
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9102652Y01
Y5202
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C5200
4802653Y01
XTAL FLTR 45.1MHZ
12.5KHz 60dB
XTAL FLTR 45.1MHZ
20/25KHz 80dB
XTAL OSC 44.645MHZ
Table of Contents
Appendix A
PL/DPL Codes
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Table of Contents
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Paragraph
Page
PL Codes and Digital PL (DPL) Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0
Self-Quieting Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
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1.0
PL (CTCSS) Codes
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Table of Contents
A-ii
PL (CTCSS) Codes
PL Codes and Digital PL (DPL) Codes
1.0
PL Codes and Digital PL (DPL) Codes
The following PL Codes have been tested and are acceptable for programming into any transmit or
receive frequency.
GROUP A
GROUP B
Freq
Code
Freq
Code
Freq
XZ
XB
YB
1Z
1B
2A
3Z
3B
4A
5Z
6A
7Z
M1
M3
67.0
77.0
88.5
100.0
107.2
114.8
123.0
131.8
141.3
151.4
173.8
186.2
203.5
218.1
XA
YZ
ZA
1A
2Z
2B
3A
4Z
4B
5A
6Z
6B
7A
M2
71.9
82.5
94.8
103.5
110.0
118.8
127.3
136.5
146.2
156.7
167.9
179.9
192.8
210.7
WZ
WA
WB
YA
ZZ
ZB
5B
8Z
69.3
74.4
79.7
85.4
91.5
97.4
162.2
206.5
026
051
073
125
152
174
243
255
274
332
365
431
455
506
565
632
723
031
053
074
131
155
205
244
261
306
343
371
432
462
516
606
654
731
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025
047
072
122
145
172
226
252
271
331
364
423
454
503
546
631
712
754
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023
043
071
116
143
165
225
251
266
325
356
413
452
466
532
627
703
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Code
Digital PL (DPL) Codes:
2.0
GROUP C
032
054
114
132
156
212
245
263
311
346
411
445
464
523
612
662
732
036
065
115
134
162
223
246
265
315
351
412
446
465
526
624
664
734
Self-Quieting Frequencies
Self-quieting frequencies are frequencies that are also generated by the radio and cause internal
interference. On these frequencies the interference caused by the self-quieter spur is great enough
that a radio will not meet its receiver sensitivity speciÞcation.
The frequencies are:
UHF 403.2, 420, 436.8 and 453.6MHz.
VHF 151.2 and 168.0MHz
PL (CTCSS) Codes
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Self-Quieting Frequencies
A-2
PL (CTCSS) Codes
Table of Contents
Appendix B
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Paragraph
Page
Accessory Connector Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0
Microphone Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
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B-ii
Accessory Connector Details
1.0
The 16-pin accessory connector pin functions are as follows:
Pin
Type
A2
4-Channel
A3
128-Channel
SPKR-
Analogue output
✓
✓
2
Ext. Mic Audio
Analogue input
✓
✓
3
GP1
Digital input
✓
✓
4
GP2
Digital output
✕
5
Flat TX Audio
Analogue input
✕
6
BUS+
Digital i/o
✓
7
GND
Ground
✓
8
GP3
Digital i/o
9
GP4
Digital ip. capture
✕
✓
10
Ignition sense
Digital input
✓
✓
11
RX Audio
Analogue output
✕
✓
12
GP5
Digital i/o
✕
✓
SW B+ / GND
Analogue output
✕
✓
14
GP6
Digital i/o
✕
✓
15
RSSI
Analogue output
✓ (Unbuffered)
✓
16
SPKR+
Analogue output
✓
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✓
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13 *
*
Name
Factory default SWB+.
Pin 1. - Speaker - audio
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Speaker - and Speaker + (Pin 16) are used to connect an external speaker. The audio PA is a bridge
ampliÞer with a minimum load resistance of 3.2 ohms. The internal speaker can be disabled by
removing the control head. Disconnect the internal speaker and assemble the control head back to
the radio.
Pin 2. - Microphone audio
This microphone signal input is common with the microphone signal input on the microphone connector and is connected to the microphone path input of the AFIC. The nominal input level is 80mV
for 60% deviation. The DC impedance is 1100 ohms and the AC impedance is 1000 ohms
Note: Only one microphone should be connected at any one time.
Pin 3. - General Purpose 1 (GP 1)
This is a digital input only. The RSS details which functions may be assigned to this pin by the codeplug. The primary use for this pin will be external PTT. (See Note 1).
Pin 4. - General purpose 2 (GP2)
This is a digital output only. The RSS details which functions may be assigned to this pin by the
codeplug. The primary use for this pin is as external alarm output (See Note 3).
Pin 5. - Flat TX audio
This input is for injecting signals into the transmit path that should not be Þltered, e.g. the output of a
modem. The nominal input level is 150mVRMS for 60% deviation. The impedance is greater than
25kohms.
B-1
Pin 6. - BUS+
This connects to the radioÕs SCI serial bus which is used for programming and tuning the radio. The
line is also available at the microphone connector Pin 7.
Pin 7. - Ground
Used as ground for both analogue and digital signals.
This is a digital input/output and is also available on the internal option connector (J0103:7). The
RSS details which functions may be assigned to this pin by the codeplug. (See Notes 1 and 2).
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This is a digital input only. It is also available on the internal option connector (J0102:7) and is used
in input capture mode when a serial type option board is Þtted. The RSS details which functions may
be assigned to this pin by the codeplug. (See Note 1).
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Pin 10.- Ignition sense
Pin 11.- RX Audio Discriminator/Filtered (Analogue output)
16
8.
Connecting this line to the ignition line of the vehicle will automatically turn the radio on when the
ignition of the vehicle is turned on. When ignition is connected, the radio cannot be turned off as long
as the ignition is active. When this line is at 0V or not connected, power on/off is under manual
control. Resistor R0423, 4.7kW, which is not Þtted as standard will cause the radio to be permanently
on whenever 12V is connected to the main power connector.
Pin 12.- General purpose 5 (GP5)
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The signal routed to this pin is controlled by AFIC. There are two possible outputs; continuous
discriminator audio or continuous Þltered RX audio output of AFIC. The output mode can be selected
by the RSS, however, this mode may be overridden during certain tuning operations. For
discriminator audio, the nominal ouput level is 330mVRMS for 60% deviation. The impedance is
600ohms. For Þltered audio, the nominal ouput level is 600mV for 60% deviation. The impedance is
600ohms.
Pin 13.- Switched B+ / Analogue Ground
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The output of this pin may be conÞgured by a solder link within the radio. Switched B+ is the default.
The current limiting resistor (R0455) default is 0W, therefore extreme care must be taken to avoid
short circuiting this output to ground, which will damage the radio.
CAUTION: The maximum continuous current allowed is 300mA. A suitable external fuse must be
installed into the lead to pin 13 to avoid damage to the radio.
Pin 14.- General purpose 6 (GP6)
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Pin 15.- RSSI
Received Signal Strength Indication, buffered analogue voltage.
Pin 16.- Speaker+ audio
Positive output of radioÕs audio PA (see Pin 1).
B-2
Note 1:
Digital Input
4.7 kW Internal Pull Up Resistor to +5V.
Maximum Input Voltage accepted as Low = 0.6V
Minimum Input Voltage accepted as High = 3.0V
Note 2:
Digital Output
4.7kW Internal Pull Up Resistor to +5V
Maximum Current when Output Low = 10mA
Maximum Voltage when Output Low = 0.5V @ 10mA
Note 3:
High Current Digital Output
4.7kW Internal Pull Up Resistor to B+
Maximum Current when Output Low = 200mA
Maximum Voltage when Output Low = 1.7V @200mA
Microphone Connector
2.0
The radio is Þtted with an 8-pin ÔTelcoÕ connector which is connected as follows:
Pin
Name
Type
Connected To
-
-
-
2
-
-
-
3
Mic. Hook
Digital input
Port A7
4
GND
Ground
-
5
Mic. Audio
Analogue input
AFIC TX IN
6
Mic. PTT
Digital i/o
Port C4
7
BUS+
Digital i/o
Port D0 and Port D1
8
HANDSET
Analogue output
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Buffered RX audio
Pin 2. - No connection.
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Pin 1. - No connection.
Pin 3. - Microphone (or internal) Hook
This port reads Ô0Õ when the microphone is on-hook and Ô1Õ when the microphone is off-hook. It is
assumed that the hook is a mechanical switch, so the software will always debounce this input.
Pin 4. - Ground
Pin 5. - Microphone audio
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This microphone signal input is common with the microphone signal input on the accessory connector and is connected to the microphone path input of the AFIC.
Note: Only one microphone should be connected at any one time.
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Pin 6. - Microphone (or Internal) PTT
The microphone PTT is active low and so this port reads Ô0Õ when the PTT is pressed and Ô1Õ when
the PTT is released. It is assumed that this PTT is a mechanical switch, so the software will always
debounce this input.
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The microphone PTT line is also available at the internal connector (J0102:1) as a bi-directional line,
i.e. an internal option can use the line, both to key-up the radio, and to know when the radio is
already keyed-up. For this to work, microprocessor port C4 has to be reconÞgured as an output and
driven low whenever any other signal, other than the microphone PTT, e.g. external PTT, causes the
radio to key-up.
Pin 7. - BUS+
This line carries the data for the single line serial comms system used in the radio. The RSS will program the radio through this socket. The line is also available at the accessory connector Pin 6.
Pin 8. - Handset Audio
This line provides buffered audio for a handset.
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B-4
Table of Contents
Appendix C
Radio Conversion
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8.
How to alter the radio for Base Station Operation . . . . . . . . . . . . . . . . . . . 1
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Radio Conversion
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C-ii
Radio Conversion
How to alter the radio for Base Station Operation
1.0
UHF Radio Conversion
If the UHF radio is conÞgured for a base station application, R5319 is not placed and TP5301 and
TP5302 are shorted.
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VHF Radio Conversion
If the VHF radio is conÞgured for a base station application, R3318 is not placed and TP3301 and
TP3302 are shorted.
Radio Conversion
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C-2
Radio Conversion

Chapt6 Book

Transcription

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