tuning duplexers - Athens Radio Club

TUNING DUPLEXERS
REPEATERS - THE BASICS
Prepared by Stan Edwards, WA4DYD
DUPLEXER – WHAT IS IT?
• A duplexer provides the means for simultaneous
operation of a mobile relay or repeater station
having separate TX and RX frequencies when
using a common antenna.
BASIC BAND PASS CONFIGURATION
BAND PASS DUPLEXER RESPONSE
PASS-REJECT CONFIGURATION
PASS-REJECT RESPONSE
BAND PASS VS PASS-REJECT
BAND PASS LOOPS
TEST SETUP
DUPLEX CURVE OF LOW SIDE
DUPLEXER TUNING
DUPLEXER TUNING
DUPLEXER TUNING
DUPLEXER TUNING
DEMONSTRATION
QUESTIONS?
REFERENCES
• Understanding, Maintaining & Re-Tuning Antenna
Duplexers, William F. Lieske, Sr., Founder, EMR
Corporation
• Field Tuning Instructions for 4-Cavity BpBr Circuit
Duplexer, REMEC-WACOM