docElecraft K3 Schematics
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Elecraft K3 Schematics
Elecraft K3 Schematics This document contains the schematics for the Elecraft K3 Transceiver and its internal options. The schematics are preceded by a Block Diagram for context. The schematics are ordered as the basic K3/10, then various options. BLOCK DIAGRAM K3/10 RF Board Main module Band Stop Filter 1st IF rejection Mixer High dynamic range 1st mixer Crystal Filter Roofing filter KIO3 I/O module KANT3 Antenna Connector if no KPA3 installed KNB3 Pre‐IF Noise Blanker KREF3 Reference oscillator, Tx mixer/Filter, Rx 2nd Mixer KSYN3 Synthesizer Front Panel Control logic DSP Digital Signal Processing DSP LPF Optional retrofit for earlier DSP boards 10‐watt PA Low power amplifier OPTIONS KBPF3 KXV3 KXV3A KAT3 DVR KPAIO3 KPA3 AuxDSP KRX3 K144XV General Coverage Receiver Bandpass Filters Transverter Interface and Receive Antenna Switching Transverter Interface and Rx Ant Switch w/K144XV Support 100‐watt Antenna Tuner Digital Voice Record/Playback Part of 100‐watt PA Part of 100‐watt PA Part of KRX3 Second Receiver Part of KRX3 Second Receiver Internal 2m Module Copyright © 2007‐2010, Elecraft, Inc. All Rights Reserved. K3 Block Diagram 64 100 C123 8 10 12 4 8.215 MHz 7T 120 3 L33 40 C130 C124 2 C126 4 3 C50 P44A/C/E 24 Aux. BPF K6A 2 C181 K8A P44C 1 2 4 C180 40 3 3 5A 2 4 6 LD_BPF2 20 P44A SCK3 1 3 5 K9A L12 1.0 6 m 2 C186 100 L3 0.25 C128 20 L2 0.25 /Q6 /Q2 /Q5 /Q3 /Q4 /CLR RCK SOUT /G SCK3 10 1 13 1 12 11 10 9 K6 (15/17 m) K5 (20/30 m) K3 (40/60 m) K1 (80/160 m) K8 (10/12 m) K9 (6 m) C189 .01 U2 7 TPIC6C595D 8 9 1 5A K6B C157 470 2 C61 .047 3 4 5 40 C140 3.9 20 C148 L1 0.25 C139 33 C187 33 7 BPF_IF2 7 C188 220 6 MISO3 K8B C184 40 L13 1.0 22 C138 33 /Q1 14 MOSIBPF1 (15/12) 10/12 m C141 3.9 /Q7 9 C134 40 C223 3 MISO3 MOSIBPF2 C147 L10 1.0 C185 4 8 C154 39 C182 2 C174 220 2 12B SRCK /Q0 .01 (17/10) 40 SIN 15 12B BPF Relays 16 C149 K7 N:10 3 GND 7 C155 820 40 4 1 K5B C152 120 40 15/17 m L11 1.0 C120 470 P44E C144 2 40 C135 40 2 8 C129 L6 1.0 20/30 m C136 39 11 C183 3 C218 C122 100 C142 5 L7 1.0 C118 820 11.5 BPF_IF2 7 40 C179 40 5 6 100 K5A 4 VCC C90 6 3 MOSI3 (40/30) 9 4 C236 .047 9 C156 K3B 1000 8 2 2 C163 Sub Rcvr 1 5A 8 C164 C119 1000 C131 40 L8 4.5 (60/20) K4 100 8 8 8 SIN SRCK /Q0 /Q7 /Q1 /Q6 /Q2 /Q5 /Q3 /Q4 /CLR RCK /G SOUT K9B RFC36 L35 100 11.5 R72 470 15 SCK3 K7 (17/10 m or 15/12 m) 13 K4 (60/20 or 40/30 m) 12 K2 (80 or 160 m) 11 K10 (Attn., SH. 4) 14 10 1 10 9 .01 C240 C274 .01 .01 LD_BPF R28 C251 C71 24 12B BPF Relays 16 BPF_IF W15 7 GND LD_BPF2 9 9 VCC C190 J64A L9 4.5 7 C153 RFC49 10 U4 TPIC6C595D C165 K3A 56 40/60 m 2 9 11 C117 40 7 7 40 C146 3 5 40 4 3 C133 56 C86 150 * = Recent Changes C191 3 1 C116 100 (80) K2B 8 4 2 BYP 12A K1B C1 390 C111 C132 C125 W4 SUBRX AUXBUS RXD TXD (160) 8 RFC53 82 (C143 on rev A PCB) KIO3 9 9 * K2A 7R 7 470 µF 8 C172 1500 80/160 m 3 (160) C3 LD_IO (80) C78 150 5 C2 7 .047 J76 9 11 13 15 17 19 21 23 25 27 29 31 33 35 MISO3 2 7 /PTT_IN /KEY_IN FSK IN 1 4 2 K1A 5 SPKR_L Filter L16 1.2 SPKR_R Stop-Band 4.5 C173 1500 C84 560 + 3 2 C177 90 L4 L5 4 Z3 3 LINE_IN+ BK_MICAF+ LINEOUT_L 4 C82 1300 27 + 3 L18 1300 1 BK_PH_R ALC (Sh. 2) C81 C178 90 560 9 C79 BPF_RF C74 2N7002 12B .001 Band-Pass Filters Q5 7 S C75 7R C99 .047 /PTT_IN C89 R4 10K 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 C160 G C92 D C107 G S 6 C239 .047 C231 /KEY_IN RFC1 2 IRFI630 4 /DOT RFC2 Q3 C93 W31 RFC3 12B 12U /PWR_ON C108 W30 D W32 W33 /DASH 7R 7T XVTRON SCK3 MOSI3 RFC4 250V 2 Paddle .015 LINE_IN- C275 J12 J13 Key J14 PTT In BK_PH_L LINEOUT_R BK_MICAF- J15 Key Out BK_PH_SW RF CHOKE RFC53 & C143 MOD C257 11 8.215 MHz 100 Appendix B 100 Elecraft K3 RF Board By Rev. W. Burdick B2 Date 1/8/10 Sht. 1 of 4 RF Acc. J66 P67A 4 6 8 10 12 14 16 18 20 2 4 6 8 10 12 14 16 18 20 22 24 26 1 3 5 7 1 3 5 7 E1 Ground P67B 100 W PA Out 100 W PA In 1 2 2 2200 D26 W20 R48 W1 XV C259 C70 51 12B SCK3 RFC31 5.6 100 BYP RFC45 D31 RFC30 100 4007 C241 .015 C63 .01 R34 100 RFC46 100 C145 11,6 0.1 C171 C115 C114 Q7 ZVN3320 0.1 K17 C127 A L34 11,6 1 1 2 3 4 R44 51 L34/C276 not used 11,6 3 2 K11A 9 4 P71B P71C L14 5 1 2 3 4 5 6 7 8 C73 9 10 6 C80 C77 R46 22K R38 22K R55 10K R54 10K VFWD2 4 C98 C87 R53 R52 10K 10K /FSCL 12A K15 (40/60 m) 9 K16 (6/10/12 m) K17 (6m INPUT) TPIC6C595D (6m OUTPUT) 2 13 12 11 6 7 8 /Q6 /Q1 /Q5 /Q0 /Q4 /Q2 /Q3 /Q7 /CLR /G RCK SOUT 15 4 3 5 14 LPF Relays SCK3 /FSCL C88 11 C83 8 C51 100 C110 C65 C102 20/30 m L19 9 L23 L21 13 6 C101 C95 K14A C85 15/17 m 11 C105 C103 C97 L27 12A K14B C113 MOSI3 VREFL C159 C151 C168 P70 ATU SCK3 MISO3 LD_ATU 8 L30 Appendix B 4 11 K13A 9 MOSIPA C96 13 LD_LPF VFWD 6 C104 C100 C64 4 .01 8 K15B 4 9 /RSCL MISO3 10 C277 C94 C76 C109 SRCK C161 SIN 16 C112 GND C166 VCC C192 1 L24 L22 13 C227 .01 U8 40/60 m L20 5 10 K15A 3 (15/17 m) 9 1 K13 K18 5A C280 C283 C279 11 SOUT /G C282 (20/30 m) 8 10 12 14 16 18 20 RCK C284 K14 U16 LM358 C175 6 /Q4 /CLR SCK3 (160 m) 12 C217 4 8 K11 /Q5 /Q3 (80 m) 13 C216 C150 2 7 1 K12 16 14 C167 1 /Q2 11 C169 C158 4 /Q6 - U5 /Q7 .01 2 6 /Q0 /Q1 15 8 5 SRCK 6 .01 + 4 SIN 16 7 3 GND - 2 MOSI3 VCC 13 4 .047 /RSCL 8A 9 + 1 5A K12B L31 80 m 5 C264 L28 K12A 3 8 6 W19 C52 .01 8 K11B 13 11 D37 13,4 9,8 L17 160 m R35 51 C53 .01 5 P71A D C137 Low-Pass Filters B BAS70 K16 Z2 LPA B T4 D36 Reset = 160-15m; Set = 12-6m W21 D C C121 @ 0.5 MHz C67 A 0.1 C276 RX: -20 dB 150 C230 13,4 10/12 m L26 L25 T-R Switch 9,8 C235 C162 K18 7R T3 C L32 C234 13,4 SWR Bridge 2.2K PA BYP 0.1 R51 C33 1 µF ATU (not used) C268 1.0 6m L29 W3 50 C260 7T R57 C72 P72 12A C269 100W 2200 RFC33 R58 220 100 100 R49 470 12PA 9,8 R50 7R 9 11 13 15 17 19 21 23 25 0.1 D27 RFC32 5600 0.1 MA4P 64-05 BPF_RF (Sh. 1) 10W C261 BYP D25 9 11 13 15 17 19 9 11 13 15 17 19 W2 RXA MISO3 C219 .01 12B 7R MISO3 7T LD_XV SCK3 MOSI3 VFWD2 7 9 10 11 12 13 14 15 16 C267 8 C266 7 V12SPA FCT 6 VIPA VTPA 5 C281 4 C91 3 C278 2 MOSIPA LD_LPF 7R 7T 1 6 C170 C176 K13B Elecraft K3 RF Board By Rev. W. Burdick B2 Date 1/8/10 Sht. 2 of 4 8 C248 .047 CH3 INH A VEE B VSS C .01 29 C60 4 16 P79 8 10 9 24 7 1 6 5 7 4 3 26 2 1 36 32 12 MOSI3 10 MISO3 LD_IF R11 2.7K 31 21 LD_BPF_S IO IO IO IO IO IO IO IO IO IO IO IO IO IO 34 /SPI_23_EN MISO SCK U7 MOSI ATF1502 ADR3 35 37 38 39 40 43 7 8 PRE_ON PRE_OFF 9 10 Q10 Q6 DOUT SCK VBB GND DIN VDD /OE LOAD Q1 Q5 Q2 Q4 Q3 NC NC 23 20 19 3 14 13 11 MOSI2 LD_SYN2 LD_SYN1 8 30 22 * 1 2 3 5A 4 NC INA 5 6 7 GND INB 7 Front Panel VIFGAIN2 VREFL (CUT) 1 2 4 12D 5D HAGC1 (CUT) VFWD 12 11 10 9 3 4 5 6 7 8 TXIF+ C222 0.1 R78 TXIF- TXMIXFIL R27 10K R5 1.8K Q11 7T RFC23 100 6 V+ 5 OUTB MISO ADR3 MOSI SCK 5T - R36 0.05 Ω 4 5 RFC40 Q2 1µH FDS6375 U1 D34 ZXTC1010 VI_LO R76 2.7K 2.7K R13 1K C270 .01 100 SB530 R77 1N4007 C271 .01 C272 .047 12PA F1 6A D6 C226 .047 C31 .047 C42 .047 D28 BZW50-15 RFC48 10µH 100µH * C58 470µF IN OUT GND MC7805ACT U13 5A C57 470µF IN OUT GND MC7808ACT + - 8A C56 220µF J11 12V Out F2 0.6A D35 1N4007 U12 J10 12V In RFC6 S D C224 .047 3 V Batt. 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 P30 C225 .047 BT1 R14 /PWR_ON 1K C265 0.1 7R 8A 7T SCK3 ALT (TBD) 8 2 5A 12A 8 NC OUTA X 4 1 100HZ FL4 FL5 P95 12V TO K144XV TC4427 R12 2.7K /CSPLL2 /CSPLL1 6 C69 .047 R100 U11 MISO2 28 FL3 R79 12 RFC47 3 TXIF+ RX2_IF+ VIFGAIN1 R80 12A OUT IN GND 12U 15 18 C45 10µF MOSI3 15 Ref./2nd LO/2nd TX 78L09 9V * = Recent Changes 12D P35 16 J75 U17 + 2 MOSINB 17 (not used) BC807 SCK3 100HZ LD_XV LD_IO LD_BPF 27 FL1 FL2 + 1 18 5A R82 R81 19 + 5 6 Q7 20 RX2_IFRX2_IF+ C35A C35 10 µF R78-R82 = 100 .047 ADR1 ADR2 10K 5 Q9 /CSRFMUX TXMIXFIL 2 /CSRFMUX ADR0 10K 4 Q8 ADR0 44 /DASH /KEY_IN RXD TXD R99 /PTT_IN /DOT R98 3 5A LD_IF CPLD ADR2 ADR1 42 2 SCK3 5R XVTRON 4 IO IO IO IO 1 BW1 BW3 BW2 AUXBUS * 3 TDO IO IO IO RX1_IF- A6810 9 5A FSK IN (Jumper, rev. A PCB) VPOST NB1LVL 5 IO IO IO IO FSK IN 3 10 .047 U10 C66 .01 VIFGAIN2 1 14 GND TDI TMS TCK LINE_IN+ 8 VREFL 11 LD_IF_S HAGC2 2 25 /CSDDS1 /CSDDS2 SCK2 2 11 LD_IF_S R91 100 1 33 LD_ATU LD_LPF 5A * 13 IO IO IO IO 100 R88 470 12 LD_BPF_S SCK3 MOSI3 MISO3 RFC44 100 RFC43 must be cut on rev A PCB /SPI_23_EN CPLD Pgm VCC GND GND GND * Vfwd/Vrefl traces @P51 1 41 RX1_IF+ 100HZ MOSI2 DSP A.F. I/O C54 .01 FCT C62 IO IO IO 9 11 13 15 17 19 P51 DSP I.F. I/O P50 VFWD VRFADC 9 VCC VCC VCC 7 + 17 5 470 RFC5 100 3 G C247 .047 CH0 CH5 R87 VPLL1 13 1 9 11 13 15 17 19 C255 7 5A CH7 14 7 C253 6 CH1 5 VIN 5 COM 3 IOUT VTPA VIPA VPLL2 5D VPLL2 15 1 9 11 13 15 17 19 GND 4 CH2 8 10 12 14 16 18 20 2 3 CH6 6 3 2 V12SPA VRFADC 16 VDD 4 12A 6 R32 * 470 4051 CH4 2 C254 1 8 10 12 14 16 18 20 Sub Rcvr 5 7 Are not on rev A PCB U6 VI_LO 470 6 SPKR_L SPKR_R BK_PH_SW BK_PH_L R2 .047 4 J64B HAGC2 7 5 SCK2 MISO2 C246 TXIF- 3 D23-24 and R31-32 SCK2 MISO2 MOSI2 VPLL1 RX2_IF- 1 D24 * 1N914 R31 * 470 9 11 13 15 17 19 2 /CSDDS2 8A 8 10 12 14 16 18 20 C252 7 6 LOAD 5 4 NC 3 2 LINE_IN- 1 D23 * 1N914 BK_PH_R LINEOUT_L BK_MICAF+ 8 10 12 14 16 18 20 LINEOUT_R BK_MICAF- 6 ALC 4 + 2 12A LD_SYN2 /CSPLL2 J74 Synth 2 VCO1 5A LD_SYN1 /CSPLL1 /CSDDS1 8A 12A Synth 1 5A J73 * C220 .047 W34 Appendix B Elecraft K3 RF Board By Rev. W. Burdick B2 Date 1/8/10 Sht. 3 of 4 R24 18 -10 dB 9 D5 3 8 4 7 RFC37 D10 C13 R20 D18 P45B RFC21 1K +11 dB C258 7R-2 C36 C46 C12 RFC17 R19 XF1 L38 2.8 C10 22 620 R22 C17 .047 R23 560 C5 100 C49 D12 C27 22 1 P86 I.F. Out Q1 C47 G RP1 2.7K 1 .047 .01 5 C6 C4 Crystal Filters C4-C14 = .047 µF HAGC1 C19 .01 8 1 XF2 D1 2.8 R16 620 7T-2 C37 RFC10 R15 100 .047 100 C244 .047 7R + 4 - 3 RX1_IF+ 7 C213 51 R41 33K C199 0.01 C196 .01 * R85 470K C238 0.1 R86 4.7M D29 BAV99 2 D38 D30 HAGC Det. C197 .01 BAV99 U3B + 7R-2 U15B - D40 1K R84 100 + 6 D32 R101 on Rev A PCB R83 7T 5 R40 6.2 Ω 2nd RX Mixer TLV2462 8.215 MHz 6 Not on Rev A PCB 5A U3A 51 R42 33K TP1 8.230 MHz RX1_IF- 4 C215 C200 0.01 1 C212 1.0µF 7 C20 .01 J81 RXLO2 (W6) (not used) 22 C30 6 - R33 6.2 Ω M1 M2 1 + 2 R P 1 2.7K 1.0µF R30 120 C214 C249 J309 2 1.0µF 2 V3 8 3 5 12A U15A LM833 2.7K 1 .047 V+ R39 100 RP1 C250 8 1 4 3 4 100 100 J65 T X I F 1 (W7) L39 C198 220µF 1 L37 C18 0 10 18 D S X2 0V = MAX GAIN, 3V = MIN FL2 RFC13 RFC12-RFC21 = 100 µH 2 C68 .047 R9 220 J309 * U9 SA612 27 2 3 R26 RFC27 22 FL1 C41 .047 D22 X1 27 L36 C28 P49B R17 C44 .047 C40 C8 100 RFC12 C48 1 64-04 .047 FL1 C23 15 C59 .047 S Q10 R8 13K 0.1 BW = 14 kHz 4 R25 51 R7 1.8K FL3 RFC15 P49A 100 C29 D14 RFC14 D11 0.1 R10 D33 C24 RFC50 D16 P48B R18 D 100 C43 .047 T5 16:5 64-04 100 P48A C7 12B 8A RFC24 100 C38 FL2 150 9 10 11 12 RFC22 100 G Post-amp .047 D21 .047 P47B RFC16 15 C203 6.2Ω * = Recent Changes 1K 7R-2 FL4 C25 C285 C39 RFC11 100 FL3 C9 R75 I.F. Amp C245 .047 22 100 P47A D13 C208 .047 .047 R29 D19 RFC20 R21 15 VPOST * R60 150 PRE_OFF RFC8 100 C233 .047 RFC25 100 22 P46B RFC18 W18 8 7R C201 .047 C26 C11 8.2Ω 8A FL5 FL4 D15 C22 C14 100 P46A 15 7 + D20 P45A 6 C262 .01 R89 4.7K R56 PRE_ON Preamp C205 100 FL5 RFC19 5 .047 C34 15 C55 .01 8.2Ω C229 4 1.8K P47C C21 1K NE46134 R68 3 (W14) C106 100 D17 R73 560 8A 2 W22 D2 Q9 R63 C209 0.1 R61 1 C204 .047 Q8 RFC29 100 µH RFC35 100 RFC41 100 C232 .047 C202 .047 1 R102 2 R67 15 620 Not on Rev A PCB P46C 3 5 J77 Noise Blanker MOSINB P45C 4 .047 R1 470 R74 18 R59 220 100 D9 1 4 C195 .047 NE46134 100 W16 (Not on rev. XA PCB.) 2 RFC42 7T C243 .047 FL5/4/3 BW Control 3 3 7T C273 .047 RFC39 47 µH C211 .047 R64 300 SCK3 7R 4 2 W17 8A .047 1 1 C228 100 RFC9 100 R37 100 .047 C242 64-05 3 Q4 RFC38 C221 2 4 C237 .047 D3 6T C210 .01 12A Z1 T6 VCO1 100 68 3 .047 .047 R43 68 R45 C206 4 D4 R62 470 1 C194 D7 BW3 BW2 BW1 470 C193 2 R3 100 RFC7 MISO3 LD_IF 100 R69 R70 470 C16 .047 R66 15 C15 .047 300 12A BPF_IF RFC34 C32 R65 .047 18 K10 2 C207 68 12A Attn. R6 NB1LVL D8 64-04 7 - 5 6 7T-2 VIFGAIN1 C256 Elecraft .047 By Appendix B K3 RF Board Rev. W. Burdick B2 Date 1/8/10 Sht. 4 of 4 C:\Elecraft\Henry\Modules\Beta\BSF\Schematic\BSF.sch - Sheet1 C:\Projects\K3\Schematics\KR MixerRevXC.sch - Sheet1 FL1 CC .01 L1 X1 X2 Module X3 .01 4 X4 X5 J2 L2 C7 2 2 To RF Board, P45A-P49A 1 C2 Filter 2 1 J1 CD 3 1 C1 CA C3 C4 C5 C6 To RF Board, P45B-P49B C8 CB NOTES: 1. This PCB can be used to assemble a discrete 5-pole crystal filter, or as a carrier for filter modules (INRAD, etc.). 2. CC and CD are used with a filter module (FL1). All other components are only used for constructing a discrete filter. 3. X1-X5 can be either 2- or 3-lead HC49/U types. Grounding pads are provided for both. Fc Zin/out BW @ -6 dB C1,C8 C2 C3 C4 C5 C6 C7 CA,CB L1, L2 Crystal p/n, Inductor Windings, Notes 8.215 MHz 500 Ω 200 Hz 120 pF 2700 pF 620 pF 1000 pF 1000 pF 620 pF 2700 pF 0 pF 2.8 µH E660027 8.215 MHz 8.215 MHz 500 Ω 500 Ω 250 Hz 500 Hz 150 pF 120 pF 750 pF 470 pF 750 pF 390 pF 750 pF 470 pF 750 pF 390 pF 750 pF 750 pF 470 pF 390 pF 0 pF 0 pF 2.3 µH 2.8 µH E660027 E660027; L1, L2 = 24 T #28 on T30-2 8.215 MHz 500 Ω 1000 Hz 63 pF 180 pF 240 pF 180 pF 240 pF 180 pF 240 pF 0 pF 3.9 µH E660027 8.215 MHz 500 Ω 0 pF 110 pF 47 pF 68 pF 68 pF 51 pF 68 pF 0 pF short E660032 8.215 MHz 8.215 MHz 500 Ω 500 Ω 8.215 MHz 500 Ω * 2700 Hz 3000 Hz 3000 Hz 6000 Hz 0 pF 0 pF 0 pF 51 pF 62 pF 62 pF 51 pF 47 pF 47 pF 51 pF 62 pF 62 pF 51 pF 47 pF 47 pF short short short 51 pF 62 pF 62 pF 0 pF 0 pF 10 pF short short 16 µH E660032 (4-crystal filter w/1dB ripple; X5 = short) E660032 (4-crystal filter w/0.5 dB ripple; X5 = short) X1, X3, X5 = E660027; X2, X4 = E660032 E660027: 8.214 MHz +/- 200 Hz; Lm = 25 mH +/- 2 mH, Co < 4 pF, Q > 100 K E660032: 8.2125 MHz +/- 200 Hz; Lm = 25 mH +/- 2 mH, Co < 4 pF, Q > 100 K For CW bandwidths, X1-X5 must be hand-selected to 10 Hz, and for SSB bandwidths, 50 Hz. Elecraft B y W. Burdick E. Swartz KFL3A Filter Board Rev. B Date 6/20/07 Sht. 1 of 1 5 4 3 2 1 P76 D ALC BK_PH_SW BK_PH_R BK_PH_L LINEOUT_L LINEOUT_R BK_MIC_AF+ BK_MIC_AFLINE_IN+ LINE_IN- U6 MOSI_3 DIG0 DIG1 /KEY_IN LD_IO /PTT_IN MOSI_3 MISO_3 1 VCC5 LD_IO +8R 100R +8T TXD +12SW RXD +12UNSW AUXBIUS /PWR_ON 16 +12SW C28 100 pF VCC GND Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 DIGOUT0 DIGOUT1 BAND0 BAND1 BAND2 BAND3 /RSPKEN Q3 2 9 SDO C27 0.1 uF K1 SDI SCK SCLR RCK OE 1 VCC 2 R25 4 470R 16 GND 3 4 5 6 11 12 13 14 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 DCTRL0 DCTRL1 DCTRL2 DCTRL3 R8 Q5 2 MICBIAS Q4 2 MMBT3904 3 /PTT_IN 1K Q6 2 VCC5 R18 10K RP2 1 nKEYOUT MMBT3904 /RSPKEN 100K 1 RTSA RP1C 6 100K 3 DTRA RTSA RP1B 7 100K 2 RP1D 5 100K 4 DTRA /KEY_IN 1K nKEYOUT B Sheet 3 MICBIAS Q7 1 10K ALC /PTT_IN LINE_INLINE_IN+ 3 2 R16 DPDT 10K Q8 1 RXD TXD MMBT3904 3 10 3 RP1A 8 R12 1 TPIC6C595D +8R AUXBUS MMBT3904 3 1 9 SDO 7 1 10 MMBT3904 3 1 2 15 7 10 8 /PWR_ON C 9 8 DIGOUT0 DIGOUT1 BAND0 BAND1 BAND2 BAND3 DIG1 DIG0 U5 VCC5 +12SW SDI SCK SCLR RCK OE 3 4 5 6 11 12 13 14 TPIC6C595D LD_IO 3 Sheet 2 R23 RF Board B 2 15 7 10 8 2 3 4 5 6 7 8 9 C SPKR_R 1 D SPKR_L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 MMBT3904 2 BK_MIC_AFBK_MIC_AF+ LINEOUT_R LINEOUT_L BK_PH_SW BK_PH_L BK_PH_R SPKR_RSW SPKR_L R26 MT1 1 MT2 1 TP1 1 2 A Mounting Holes for KIO3 Faceplate 5 A B VCC8A U3 +12SW GND C16 0.1 uF 4 1 +VIN OUT 3 2 GND TAB 4 UA78M08CDC +12SW C8 10 uF/25V + C15 0.1 uF C22 0.1 uF 3 470R VCC5 U2 1 +VIN OUT 3 2 GND TAB 4 UA78M05CDC A C11 10 uF/25V + C14 0.1 uF 2 Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title KIO3 Main Size B Document Number 2005042501 Date: Wednesday, June 16, 2010 Rev C Sheet 1 1 of 3 5 4 3 2 R1 +12SW RXD RXD 100 uH C9 100 uF/16V C12 C4 1000 pF 1000 pF 1K 3 2N7002K + 1 R2 14 12 10 T1in T2in T3in 15 13 11 R1out R2out R3out C 16 VCC5 VCC T1out T2out T3out 3 5 7 R1in R2in R3in 2 4 6 V+ 1 RTSA DTRA R6 GND V- 8 T1 27K R7 27K C6 0.022 uF X7R 1 C2 0.1 uF 3 2 + B R4 VCC8A C10 33 uF/16V J90 DTR_X TXD_X RTS_X RXD_X BAT54S C29 C30 C31 C32 1000 pF 1000 pF 1000 pF 1000 pF BAND0 BAND3 BAND2 nKEYOUT /PWR_ON ALC /PTT_IN BAND1 AUXBUS DIG0 DIG1 DIGOUT0 DIGOUT1 BAND0 BAND3 BAND2 nKEYOUT /PWR_ON ALC /PTT_IN BAND1 AUXBUS DIG0 DIG1 DIGOUT0 DIGOUT1 10K C LT1039ACN D0 2.7K R3 10R 0.01 uF X7R D1 9 1000 pF R5 RTSA DTRA C1 0.1 uF C33 C7 0.01 uF X7R C5 1 uF/16V U1 TXD C3 MMBT5089 1 D 1K TXD Approximately 1 kHz Q1 2 2 D L1 3 Q2 1 VCC5 RS232 COM RS232 DTR RS232 TXD RS232 RTS RS232 RXD ACC COM ACC BND0 ACC BND3 ACC BND2 ACC KEY ACC PWR ACC ALC ACC PTT ACC BND1 ACC AUX ACC DI0 ACC DI1 ACC DO0 ACC DO1 +5V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 B D-Sub IO Board Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title C13 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF Size A Date: 5 4 3 A KIO3: Main, Sheet 2 Document Number 2005042501 Wednesday, June 16, 2010 2 Rev C Sheet of 2 1 3 5 4 3 2 1 TALT3 4 5 1 8 TALT2 4 5 1 8 LM-NP-1001 D R20 LINEOUT_R LM-NP-1001 T2 LINEOUT_R D 1 6 3 4 LINEJACK_COM 1 6 LINEJACK_L 3 4 51R TTC-108 T3 R19 LINEOUT_L LINEOUT_L 51R C24 1000 pF LINE_IN+ C23 1000 pF TTC-108 R13 T1 LINE_IN+ 1 6 BK_PH_R BK_PH_L BK_PH_R BK_PH_L 604R R24 C C 62R LINE_IN- LINE_IN- 3 C20 1000 pF 4 BK_PH_SW BK_PH_SW TTC-108 C25 1000 pF TALT1 VCC8A 4 5 1 8 C18 1000 pF LM-NP-1001 2 C45 0.1 uF RP3B C46 0.1 uF C47 0.1 uF R10 2.7R R9 2.7R R11 2.7R SPKR_RSW SPKR_RSW SPKR_L SPKR_L 10K 8 7 MICBIAS 1 2 RP3A MICBIAS Q9 1 MMBT3906 3 10K B R14 5.6K C17 10 uF/25V + R15 BK_MIC_AF+ BK_MIC_AF- 10K R21 BK_MIC_AF- R22 R17 10K 10K 10K This resistor sets gain of mic preamp. VCC8A C48 1000 pF VCC8A 2 + 5 6 - 7 C50 1000 pF C51 1000 pF - 6 Audio IO Board A RP3D C19 1 uF Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson 10K Title 4 C26 5 470 pF C21 4 C52 0.1 uF 10K 5 3 4 + C49 1000 pF RP3C U4B LM833D 4 1 A U4A LM833D 8 8 3 VCC8A SP L SP L S SP C SP R PH SW1 PH R PH SW2 PH L PH C MIC C MIC A LIN C LIN L LOUT C LOUT R LOUT L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 INT SPKR BK_MIC_AF+ B J91 P25 470 pF 3 2 KIO3: Main, Sheet 2 Size B Document Number 2005042501 Date: Wednesday, June 16, 2010 Rev C Sheet 1 3 of 3 5 4 3 2 1 LINEJACK_R 2 LINEJACK_L LINEJACK_COM 4 5 1 J22 LINE OUT D D 2 LIN_LX LIN_CX P91 C SP L SP L S SP L C SP R PH SW1 PH R PH SW2 PH L PH C MIC C MIC A LIN C LIN L LINE C LOUT R LOUT L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 KIO3 L13 L14 BEAD BEAD L16 L12 L11 L10 L9 BEAD 100 uH 100 uH 100 uH 100 uH L6 L5 L4 L3 L2 L1 1000 pF C2 1000 pF C R2 R1 PH_R 2.7R 2.7R PH_L C3 1000 pF C5 1000 pF C9 C12 C4 0.1 uF 1000 pF C10 C11 0.1 uF 0.1 uF C8 0.1 uF C6 C7 0.1 uF 0.1 uF 1000 pF J20 4 5 1 MIC_A PH_SW1 B LINE IN 2 100 uH 100 uH 100 uH 100 uH 100 uH 100 uH C1 J21 4 5 1 MIC 6 1 3 4 5 7 8 SPK_R 2 SPK_LS SPK_L SPK_LC 4 5 1 J19 PHONES B J18 SPEAKERS Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A KIO3: Audio IO Board Size A Document Number 2005042501 Date: Wednesday, June 16, 2010 2 Rev A Sheet 1 of 1 1 5 4 3 2 1 D 11 10 R13 220R R12 220R L3 100 uH L2 100 uH 1 6 2 7 3 8 4 9 5 RXD_X RTS_X TXD_X DTR_X SER_C D J24 RS232 DE9 PIN FUNCTION DIRECTION 2 7 3 RXD_OUT RTS_IN TXD_IN ---> <--<--- 4 DTR_IN <--- 5 COMMON Frame Ground C7 C9 C8 1000 pF 1000 pF 1000 pF C R3 R4 R5 R8 P90 B C 2.2K 2.2K 2.2K 2.2K C4 C14 C16 C1 C2 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 RS232 COM RS232 DTR RS232 TXD RS232 RTS RS232 RXD ACC COM ACC BND0 ACC BND3 ACC BND2 ACC KEY ACC PWR ACC ALC ACC PTT ACC BND1 ACC AUX ACC DI0 ACC DI1 ACC DO0 ACC DO1 +5V KIO3 C6 1000 pF J23 ACC L4 R14 R15 R16 R17 R18 R1 R19 R20 R21 R2 R9 R10 R11 DIGO_X DIGO1_X DIG0_X DIG1_X 100 uH 220R 220R 220R 220R 220R 137K 1% 220R 220R 220R 220R 220R 220R 220R ACC PIN 6 11 1 7 12 2 8 13 3 9 14 4 10 15 5 6 11 1 7 12 2 8 13 3 9 14 4 10 15 5 AUX_X PWR_X BND0_X BND1_X BND2_X BND3_X PTT_X KEY_X ALC_X FUNCTION DIG_OUT_0 DIG_OUT_1 FSK IN XVTR_ON COMMON AUXBUS PWR_ON BANDOUT_0 BANDOUT_1 BANDOUT_2 BANDOUT_3 PTT_IN KEYOUT_LP ALC_IN COMMON DIRECTION ---> ---> <-----> <--> <-----> ---> ---> ---> <-----> <--B 16 17 R7 69.8K 1% Frame Ground R6 100K 1% C10 C12 C11 C13 C3 C17 C5 C15 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF 1000 pF A A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title 5 4 3 2 KIO3: D Sub RS232 IO Board Size B Document Number 2005042501 Date: Wednesday, June 16, 2010 Rev B.1 Sheet 1 1 of 1 J69A L1 L2 (jumper) 96 nH To J7 (ANT1) SA1 R1 560K * C2 * C1 * * C3 * C5 L3 * C4 3900 C6 8.2 MHz Trap * Not presently used J72 2 NOTES: 1. 2. 3. RF Board 20 18 16 14 12 10 8 6 4 2 19 17 15 13 11 9 5 3 1 J70 1 7 All parts are through-hole. Adjust L2 and C5 for minimum 8.215-MHz leakthrough. = mounted on bottom side of PCB. Elecraft KANT3 Ant. Input Module B y W. Burdick R. Friess Rev. XC Date 10/13/08 Sht. 1 of 1 C:\Projects\K3\Schematics\NOISE BLANKERrevB.sch - Sheet1 2 5V 27 C21 1 R16 68 R8 1.5K 4 XF K1 R7 1.2K C13 39 R4 330 C5 0.1 Fc = 8215.0 kHz, BW=4 kHz Fxtal = 8212.5 kHz X1 R6 1K C28 0.1 X2 X3 C23 0.1 P75 RF Board 2N3904 J7 R9 1.2K R3 15 C18 39 C16 33 K1 D1 1N914 C8 0.1 Q3 2 X4 C15 39 C14 33 7 8 C24 0.1 8 3 6 L4 27 7 5 0.1 6 C2 100 MX TXMIXFIL 5 C27 0.1 C3 0.1 4 2N3904 L5 3 7T C6 0.1 Q2 1 100 HZ C26 TXIF1 8.215 MHz R5 330 0.1 L6 27 TX MIX OUT 7T L1 27 IN C10 0.1 C11 0.1 C22 0.1 2V 5V L2 U1 MCP809T-450 27 J3 Ext. Ref. C7 0.1 3 Z1 1 100 HZ 4 8 2 11 VC Vdd /RST 14 GND 8 7 6 5 4 3 J4 Ext. Sync. Module 2 4 J1 Sub Ref. 5 13 12 1Q 1D 1Q 2Q 2D 2Q 4Q 4D 4Q 3Q 3D GND R13 330 U3 SA612 TX Mixer 16 Vcc 1 CLR 9 CLK R15 330 49.380 J2 Main Ref. to 4 V+ 5 2 3Q U2-9 3 C20 6 0.1 7 C1 0.1 2 Main RXLO2 J6 3 7 6 15 14 10 R2 1K Sub RXLO2 C4 0.1 R1 330 J5 11 8 U2 CUT J4-6 1 V- R12 150 VCTRL 5V 1 R10 150 R11 330 C12 0.1 R18 750 C19 0.1 R14 330 5V OUT NC Vss 7 2 1 R17 330 TXIF2 (15 KHZ) 8 74VHC175 Divide by 6 Elecraft KREF3 By Rev. W. Burdick XD REF/2ND TX IF Date 3/3/07 Sht. 1 of 1 R35 8B 8 R40 7 R41 8.2K 4 12 - 1 10 0.01 OP284 9 LD R14 10K R38 100K 3V VPLL MOSI2 GND VCC SRCK SIN /Q4 /Q0 /Q3 /Q1 /Q5 /Q2 /Q7 /Q6 RCK /CLR SOUT R33 15K C49 15 14 13 /CSPLLB 12 MOSI2B SCK2B 11 10 9 C38 VP RSET DVDD MUX LE CLK CE CPGND RFB RFA AVDD DGND L7 27 µH 0.1 CP AGND DATA R11 C45 470 330 .01 6 REF 10K C34 3 5 C50 C35 22 120 6 8 L2 39µH C71 12 X4 C68 XB XF 47 Z = 500 R16 Q6 1K 3 C5 6 C6 5 Filter X3 C67 10 X2 C66 C64 47 C65 10 12 U6 4 OUT IN GND N/C EN 27 µH 0.1 C48 C60 0.1 0.1 C12 0.1 13 12 11 10 9 8 VCC /1OE /4OE 1A 4A 1Y 4Y /2OE /3OE 2A 3A 2Y 3Y GND U7 74LCX125 1 2 4 5 20 18 16 14 12 10 SCK2B 7 CK C10 0.1 SCK2 MOSI2 MISO2 8 6 4 2 C23 0.1 MMBD914 0.1 C25 VCO VCO 1 2 VREF 3 COMP .01 C22 4 A Vdd 5 D Vdd 0.1 C19 6 CAP 7 DGND 8 MCLK 9 FSEL 10 PSEL 3V L9 27 µH 8.7-46 MHZ C26 0.1 AD9834 9 7 5 3 J83 49.38 MHz 50 µH AC 2 + - 1 3 Amp C31 .01 +10 dB 2N3904 AE U4 LMV321 1 5 470 0.1 Q3 J84 4 C30 120 ALC D5 D6 DET 1N5711 R24 5V 19 17 15 13 11 C24 .01 C7 .01 FS ADJ 12T, FT37-43 +13 DBM P73 CSP 6 C69 10 µF (not used) K /CSPLLB R10 56.2K * 2N3904 L6 C9 C29 120 3 U2 R26 C11 0.1 LD_SYN 14 R30 330 Q5 R22 6.8K 20 IOUTB 19 IOUT 18 AGND 17 Vin 16 SIGN 15 /FSYNC 14 SCLK 13 SDATA 12 SLEEP 11 RESET 12V C15 C37 10 µF 3 Z = 200 R28 1.8K 8B 27 µH 0.1 1 2 200 Q2 L5 C13 L4 ZXCL300E5 5 200 8B S 8B DDS Leaded, 1/4 W NOT ON REV A PCB 8A 5V 2.7K .01 SCK2B MOSI2B 150 C18 0.1 8-46 MHz G R31 C59 R25 D J310 30 2% DDS R37 L8 C41 10 µF 39µH C21 0.1 VCO C53 0.1 R13 22 C27 0.1 B,D=Grn A,C=Red 110 1% L1 C70 12 X1 K2 Select F (1.0 or 0.25 µH, Pri: 9t #26, bifilar; Sec: 3t #26) /CSDDSB * 3V 4 3 2N3904 R20 2N7002 MOSI2B 4 C R39 S E A D C4 -6 dB @ +/- 1.2 kHz 47 R17 100K 7 C39 0.1 Crystal VCO 4 Q4 DT 2 K3 39 µH FS 5 2 2 MISO2 /CSDDSB 7 7 R12 1 4 3 L R8 25.5 3V 2 68 C32 .01 B 5 C8 D1 12V ADF4001 16 C56 6 7 K1 U3 5V C55 12V PLL 0.1 C54 Q1 D8 1N4148 7.5 R18 1K 8 R32 100K T1 C1 D2 7 470 µF D G 15 13 .01 C36 .01 R 5 1K 5 C61 R27 22 J310 2% C2 D3 4 U1 TPIC6C595N K1 Fpll = ~22 kHz 3 30 GT C33 10 D10 C3 R 6 1K .01 R29 22 DR D9 D4 2 C28 0.1 MMBV109 BAP64-04 R 7 1K C57 C44 C17 .01 VT 8B C58 0.1 1 /G VP C62 2.2 uF 1K 14 LD_SYN C16 R34 6 + 2 15K 11 MISO2 U5B 3 15 SCK2 LPF + 3LF 16 K2 - 5 C47 0.1 5V K3 U5A CP .022 R36 10K + C20 LF 6 L3 27 µH 100 6.8K .27 LPF R15 8 C51 .01 1 C52 VCO Out R21 12 R23 470 AB K = Keyed connector pin * = Changes (from rev A3 to A4) = On top side of PC board. VPLL R9 75 C14 0.1 Elecraft K3 By Synthesizer Rev. W. Burdick A4 Date 1-8-10 Sht. 1 of 1 5 4 3 2 1 MICBIAS SWITCHES MCU MAINENCA MAINENCB D SUBENCA SUBENCB RITENCA RITENCB /ENC_EN MISCENCMUX VFPADCMUX VFADCTAP ADR[2:0] C MAINENCA MAINENCB MAINENCA MAINENCB SUBENCA SUBENCB SUBENCA SUBENCB RITENCA RITENCB RITENCA RITENCB /ENC_EN LCD LCDSCL LCDDI LCDCE LCDMODE VCONTRAST LCDSCL LCDDI LCDCE LCDMODE VCONTRAST MISCENCMUX VFPADCMUX VFADCTAP VFPADCMUX VFADCTAP ADR[2:0] ADR[2:0] SWITCHES MOSI SCK LOAD VLEDBRT VLCDBKLT VLEDBRT VLCDBKLT /PTT VR1REAR VR1FRONT VR2REAR VR2FRONT VMICBTN VR1REAR VR1FRONT VR2REAR VR2FRONT VMICBTN /PTT /PTT MISCELLANEOUS J31 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 12V_UNSW VPWR_SW PWRHOLDON /PWRON 12V_SW V12MON SCL SDA MOSI SCK MISO MUTE VLEDBRT VLCDBKLT C /DSP1BUSY /DSP2BUSY VSMTR /CSDSP1 /CSDSP2 /CSDSPLOAD DSP1DATA DSP2DATA 12V_UNSW VPWR_SW PWRHOLDON /PWRON 12V_SW V12MON 3VBATT SCL SDA 12V_UNSW VPWR_SW POWERHOLDON /PWRON 12V_SW V12MON 3VBATT SCL SDA B POWER MISO MUTE /DSP1BUSY /DSP2BUSY VSMTR /CSDSP1 /CSDSP2 /CSDSPLOAD DSP1DATA DSP2DATA NOTES: PCB Revision B MCU FP-DSP Elecraft, Inc. Copyright (C) 2007. L Johnson Title 5 MICBIAS POWER 3VBATT A MOSI SCK LOAD LEDS VR1REAR VR1FRONT VR2REAR VR2FRONT VMICBTN B VCONTRAST LEDS MOSI SCK LOAD MISCELLANEOUS MICBIAS D LCD /ENC_EN MISCENCMUX LCDSCL LCDDI LCDCE LCDMODE 4 3 A Elecraft K3: Front Panel Size A Document Number 2004070601 Date: Tuesday, November 24, 2009 2 Rev B,1 Sheet of 1 1 7 5 4 3 J36 LCDMODE LCDDI LCDSCL LCDCE D U2 1 2 3 4 5 6 VCC5 OLED R20 LCDCE LCDMODE LCDCE LCDMODE C S0 S1 S2 S3 S4 S5 70 71 72 73 74 K0 K1 K2 K3 K4 92 LED 78 OSC1 79 OSC2 84 85 86 83 87 SCL DI DO CE MODE 88 89 REQ1 REQ2 90 RESET 77 REMIN VCC5 82 INH 93 VLCD 94 BIAS 81 VDD VSS COM1 COM2 COM3 COM4 R16 10K0 B 1 L C38 + R23 10 uF/25V 1K VCC5 1 VCONTRAST C32 3 BAT54 + D14 R13 1K00 10 uF/25V D15 91 SEG60 SEG59 SEG58 SEG57 SEG56 SEG55 SEG54 SEG53 SEG52 SEG51 SEG50 SEG49 SEG48 SEG47 SEG46 SEG45 SEG44 SEG43 SEG42 SEG41 SEG40 SEG39 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33 SEG32 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 100 99 98 97 COM1 COM2 COM3 COM4 COM[1..4] SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 SEG43 SEG44 SEG45 SEG46 SEG47 SEG48 SEG49 SEG50 SEG51 SEG52 SEG53 SEG54 SEG55 SEG56 SEG57 SEG58 SEG59 SEG60 COM1 COM2 COM3 COM4 3 BAT54 C41 0.1 uF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 NJU6436 1 DS1 SEG[1..60] SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 SEG43 SEG44 SEG45 SEG46 SEG47 SEG48 SEG49 SEG50 SEG51 SEG52 SEG53 SEG54 SEG55 SEG56 SEG57 SEG58 SEG59 SEG60 100K LCDSCL LCDDI LCDSCL LCDDI 64 65 66 67 68 69 2 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38 SEG39 SEG40 SEG41 SEG42 SEG43 SEG44 SEG45 SEG46 SEG47 SEG48 SEG49 SEG50 SEG51 SEG52 SEG53 SEG54 SEG55 SEG56 SEG57 SEG58 SEG59 SEG60 1 2 3 4 COM4 COM3 COM2 COM1 D C B PCB Revision B U2 K[0..4] to use separable vias to ground for debug/ development. LCD pinout is Rev F. K3 Custom LCD R54 sets LCD driver current. NOTES: R57 sets LCD drive frequency. A A Elecraft, Inc. Copyright (C) 2007. L Johnson Title 5 4 3 2 Elecraft K3: Front Panel - LCD Size B Document Number 2004070601 Date: Tuesday, November 24, 2009 Rev B.1 Sheet 1 2 of 7 5 4 3 2 1 VCC5 D D U14 MOSI SCK LOAD VLEDBRT MOSI SCK LOAD VLEDBRT VCC5 U13 D1 2 15 7 10 8 SDI SCK SCLR RCK OE 1 VCC 16 GND Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 3 4 5 6 11 12 13 14 R37 120R 1 2 TX (RED) D2 R36 120R 1 2 D-F (YEL) C63 0.1 uF SDO 9 TPIC6C595D C62 0.1 uF D3 R34 120R 1 VCC5 2 2 15 7 10 8 SDI SCK SCLR RCK OE 1 VCC 16 GND D10 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 SDO 3 4 5 6 11 12 13 14 R62 120R MICBIAS 1 MICBIAS 2 COM OUT (GRN) 9 TPIC6C595D SHIFT (GRN) C C D4 VCC8 120R 1 2 2 R35 LO (GRN) Z8 LCD BACKLIGHT D5 120R D12 1 R67 2 120R 1 2 1 R33 HI (GRN) OFS - (YEL) D6 R3 12R R32 120R D7 1 R54 2 120R 1 WIDTH (GRN) OFS CLR (GRN) D8 3 R63 VLCDBKLT VLCDBKLT R31 1K00 1 R64 120R D13 1 Q4 FMMT614TA 2 B 120R 2 R53 2 120R 1 2 SPEED (GRN) OFS + (YEL) D9 D11 1 R61 2 120R COM IN (GRN) 1 B 2 PWR (GRN) NOTES: PCB Revision B A A Elecraft, Inc. Copyright (C) 2007. L Johnson Title 5 4 3 2 Elecraft K3: Front Panel - LEDs Size B Document Number 2004070601 Date: Tuesday, November 24, 2009 Rev B.1 Sheet 1 3 of 7 5 4 3 2 1 U1 VLCDBKLT VCC5 LOAD VMICBTN VR1REAR VR1FRONT VPWR_SW VR2FRONT VR2REAR VFPADCMUX VSMTR VCC5A V12MON VFADCTAP VCC5 C SCL SDA 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 LOAD VMICBTN VR1REAR VR1FRONT VPWR_SW /CSEEP R5 T5 VR2FRONT VR2REAR VFPADCMUX VSMTR V12MON VFADCTAP EXP_FP1 FPTMP VRFADCMUX FCOUNT SCL SDA TXD RXD SUBENCB SUBENCA LCDDI LCDMODE NB1AGC DIG0 DIG1 /CSFLASH PWRHOLDON MISCENCMUX ADR0 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 RH2/A18 RH1/A17 RH3/A19 RH0/A16 RE1/WR/AD9 RE2/CS/AD10 RE0/RD/AD8 RE3/AD11 RG0/CCP3 RE4/AD12 RG1/TX2/CK2 RE5/AD13 RG2/RX2/DT2 RE6/AD14 RG3/CCP4 RE7/CCP2/AD15 MCLR RD0/PSP0/AD0 RG4/CCP5 VDD VSS VSS VDD RD1/PSP1/AD1 RF7/SS RD2/PSP2/AD2 RF6/AN11 RD3/PSP3/AD3 RF5/AN10/CVref RD4/PSP4/AD4 RF4/AN9 RD5/PSP5/AD5 RF3/AN8 RD6/PSP6/AD6 RF2/AN7/C!OUT RD7/PSP7/AD7 RH7/AN15 RJ0/ALE RH6/AN14 RJ1/OE RH5/AN13 RJ2/WRL RH4/AN12 RJ3/WRH RF1/AN6/C2OUT RB0/INT0 RF0/AN5 RB1/INT1 AVDD RB2/INT2 AVSS RB3/INT3/CCP2 RA3/AN3/VREF+ RB4/KBI0 RA2/AN2/VREFRB5/KBI1/PGM RA1/AN1 RB6/KBI2/PGC RA0/AN0 VSS VSS OSC2/CLK0/RA6 VDD OSC1/CLKI RA5/AN4/LVDIN VDD RA4/TOCKI RB7/KBI3/PGD RC1/T1OSI/CCP2 RC5/SDO RC0/T1OSO/T13CKI RC4/SDI/SDA RC6/TX1/CK1 RC3/SCK/SCL RC7/RX1/DT1 RC2/CCP1 RJ4/BA0 RJ7/UB RJ5/CE RJ6/LB LCDDI LCDMODE J35 EXP_FP1 PWRHOLDON MISCENCMUX U15 VCC5 VCC5 ADR1 ADR2 ADR3 /CSRFMUX /CSDSP1 /CSDSP2 /CSDSPLOAD MAINENCA MAINENCB AUXBUS_RAW /SR_EN ADR[2:0] ADR[2:0] 4 V+ VO 3 2 5 GND GND NC 1 C96 FPTMP 1000 pF /CSDSP1 /CSDSP2 /CSDSPLOAD MAINENCA MAINENCB TXD 2K20 2K20 2K20 2K20 /PTT /DOT /DASH /KEY /ENC_EN Y2 330R VCC5 2N7002K 16 MHz MOSI MISO SCK VLEDBRT RITENCA RITENCB C7 15 pF VCC5 C8 15 pF C6 0.1 uF C9 0.1 uF C4 0.1 uF C10 470 pF 100R C2 0.1 uF R73 + C3 0.1 uF 120R AUXBUS C5 10 uF/25V VCC5 C91 470 pF 47K0 VCC5 U6 3 1Y 1A 1OE 2 1 6 2Y 2A 2OE 5 4 3Y 3A 3OE 9 10 11 4Y 4A 4OE 12 13 14 VCC GND 7 8 MISO VCC5 D16 VCC5 VCC3 R44 R19 4K70 MOSI MISO SCK /CSEEP 5 2 6 1 7 3 A /CSFLASH VCC3 2 1 1A 1OE 1Y 3 5 4 2A 2OE 2Y 6 9 10 R56 R55 120R 120R PGD PGC R81 R80 R82 120R 120R 10K0 J3 1 2 3 4 5 6 5 2 6 1 7 3 8 3A 3OE 3Y 12 13 4A 4OE 4Y 11 7 GND VCC 14 SI VCC SO SCK CS HOLD WP VSS C1 0.1 uF 4 C81 1000 pF C89 1000 pF C12 1000 pF C11 1000 pF R5 C83 0.01 uF ADR0 C14 1000 pF T5 C19 0.01 uF ADR1 C15 1000 pF /SPI23_EN C18 0.01 uF ADR2 C86 1000 pF VRFADCMUX C82 0.01 uF ADR3 C16 1000 pF 12V_UNSW C80 0.01 uF MOSI C85 1000 pF /PWRON C20 0.01 uF MISO C17 1000 pF 3VBATT C79 0.01 uF SCK C84 1000 pF 12V_SW C21 0.01 uF NB1AGC C94 0.01 uF DIG0 C93 1000 pF DIG1 C92 1000 pF RXD C13 1000 pF TXDQ C88 1000 pF TXD C70 1000 pF R6 R74 R75 R76 R77 47K0 47K0 47K0 47K0 47K0 VCC5 C90 1000 pF C35 0.1 uF /DSP2BUSY DSP2DATA 4 R29 R28 NOTES: PCB Revision B 100K 100K Elecraft, Inc. Copyright (C) 2007. L Johnson Title VCC3 3 A VCC5 M25P20 4 B 8 SN74LVC125A 5 C 1000 pF FCOUNT /KEY /DASH /DOT /PTT VCC3 MO MI SC C87 ICD-2 8 U5 MOSI MISO SCK /CSRFMUX AT25256A U7 SCK SI VCC SO SCK CS HOLD WP VSS VCC5 VCC5 U8 MCLR 3 BAT54 10K0 VCC5 SN74HCT125A MOSI 1 D RF BOARD R83 B 12V_UNSW /PWRON 3VBATT 12V_SW 12V_UNSW /PWRON 3VBATT 12V_SW /SR_EN VCC5A R4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 /CSRFMUX ADR0 ADR1 ADR2 ADR3 MOSI SCK MISO /SPI23_EN R5 T5 VRFADCMUX FCOUNT /ENC_EN Q5 1 R5 L7 PIC18LF8722 SUBENCB SUBENCA AUXBUS /SR_EN /PTT /DOT /DASH /KEY RXD 100 uH TXDQ /PTT R72 R71 R70 R69 FP EXPAND J30 LM20CIM7 /KEYB ENC_EN /SPI23_EN PGC PGD MOSI MISO SCK VLEDBRT RITENCA RITENCB 1 2 3 4 5 NB1AGC DIG0 DIG1 3 D LCDSCL LCDCE MUTE /DSP1BUSY /DSP2BUSY DSP1DATA DSP2DATA VCONTRAST MCLR VLCDBKLT 2 LCDSCL LCDCE MUTE /DSP1BUSY /DSP2BUSY DSP1DATA DSP2DATA VCONTRAST 2 Elecraft K3: Front Panel - MCU Size B Document Number 2004070601 Date: Tuesday, November 24, 2009 Rev B.1 Sheet 1 4 of 7 5 4 3 2 1 R87 10K0 R88 2 VCC5B 10K0 Q8 1 VCC5B MMBT3906 1 uF C98 D 1 uF J32 1 2 3 4 5 3 C97 MICBIAS R89 5K60 D AF /PTT DN UP FUNC BIAS /PTT L2 L9 L8 L6 L5 L3 J2 100 uH 100 uH 100 uH 100 uH 100 uH 100 uH 1 2 3 4 5 6 7 8 DSP MIC AUDIO MIC R48 R51 R52 R49 R50 VCC5B C 1K00 1K00 1K00 1K00 VMICBTN VMICBTN VCC5B R1 1K00 C47 10K 0.01 uF 1 3 4 2 6 VR1REAR C66 0.01 uF C71 0.01 uF C65 0.01 uF C75 0.01 uF C64 0.01 uF C78 0.01 uF C58 0.01 uF C76 0.01 uF C95 0.01 uF C74 0.01 uF C67 0.01 uF C72 0.01 uF VR1REAR REAR (INNER) UPPER POT TAIL5 TAIL1 TAIL2 TAIL3 TAIL4 TAIL6 TAIL7 TAIL8 TAIL9 TAIL10 TAIL11 TAIL12 TAIL13 TAIL14 C45 5 9 7 8 0.01 uF B VR1FRONT VR1FRONT FRONT (OUTER) UPPER POT C44 VCC5B R2 0.01 uF 10K 1 3 4 2 6 VR2REAR VR2REAR REAR (INNER) LOWER POT CNR1 CNR3 CNR4 CNR2 B HOLE1 HOLE2 FIDCL2 FIDCL1 MICGND PHONES PCB Revision B NOTES: Controls are dual pots. C43 5 STNDO2 STNDO3 STNDO5 STNDO6 STNDO8 STNDO4 STNDO1 STNDO7 C 9 8 7 0.01 uF VR2FRONT A VR2FRONT FRONT (OUTER) LOWER POT Title C46 0.01 uF 5 4 Elecraft, Inc. Copyright (C) 2007. L Johnson 3 A Elecraft K3: Front Panel - Miscellaneous Size A Document Number 2004070601 Date: Tuesday, November 24, 2009 2 Rev B.1 Sheet of 5 1 7 5 4 3 2 R43 30K0 V12MON D 12V_SW 1 R38 +VIN OUT 3 2.2 mH 2 L1 occupies site labeled R68. GND TAB C51 0.1 uF 4 + C59 470 uF/25V + C50 0.1 uF 10K0 C52 1000 uF/10V + VCC5 VCC5 1 +VIN OUT 3 2 GND TAB 4 C53 0.1 uF C55 0.1 uF + SCL SDA C57 10 uF/25V D17 1 UA78M05 3 3 1 3 INT 4 VDD OSCI 1 Y1 C60 32 kHz OSCO 2 VSS CLKOUT 7 R45 100K C77 0.1 uF 2N7002K + 33 pF PCF8563T C C48 10 uF/25V C40 0.1 uF R24 10K0 30K0 B VCC5 VPWR_SW R25 10K0 2 2 4 3 R26 74AHC1GU04 1 2N7002K 2 POWERHOLDON 5 2N7002K Q2 1 U11 3 3 Q6 B SCL SDA 2 POWER U16 6 5 100R Q3 12V_UNSW 10K0 C61 0.1 uF R84 S18 10K0 8 VCC5B /PWRON R86 VCC5CLK BAT54C C R85 SCL SDA 2 3VBATT VPWR_SW D LM2937IMP-8.0 U10 C73 470 uF/25V V12MON VCC8 U9 L1 (R68) 12V_SW 1 1 2 C42 0.1 uF 1 2 U4 TP2 GND 1 3 VIN Enable TP1 2 GND GND VCC3 OUT 5 Bypass 4 C37 10 uF 10v ECJ LP2985-3.3 PCB Revision B NOTES: Regulators U3 and U5 SOT-223. A A Elecraft, Inc. Copyright (C) 2007. L Johnson Title 5 4 3 2 Elecraft K3: Front Panel - Power and RTC Size B Document Number 2004070601 Date: Tuesday, November 24, 2009 Rev B.1 Sheet 1 6 of 7 5 4 3 2 1 VCC5 R9 R12 R15 TAP1 VCC5 1K00 TAP2 1K00 R17 R18 TAP3 1K00 TAP4 1K00 R39 R42 TAP5 1K00 TAP6 1K00 3 R58 TAP7 1K00 SCANADC0 MODES2B SCANADC1 SCANADC2 C S22 SCANADC1 ATUTUNE SCANADC0 S34 ADR0 ADR1 ADR2 SCANADC1 RATE S23 SCANADC2 NOTCH SCANADC3 S32 FINE NR XMIT S11 SCANADC0 NB MODE+ S10 S21 S24 S35 Z1 SCANADC2 2 SUB 5 6 M1 REC S9 S25 M>V S1A SCANADC4 S33 5 6 SCANADC4 2 SCANADC5 5 6 S19 SCANADC0 S26 BAND- RX ANT FREQ ENT S1B S20 S27 B SCANADC1 BAND+ S4 DISP S5 SCANADC1 ANT SCANADC2 S12 SCANADC2 S13 S28 S29 S7 AGC SCANADC4 S8 SCANADC5 V>M M2 S3 S6 SCANADC1 SCANADC4 S30 SCANADC5 S31 2 5 6 1 3 4 7 A B SWCOM SW MTG1 MTG2 SCANADC0 ADR0 ADR1 ADR2 PWR COM A B SWCOM SW MTG1 MTG2 1 3 4 7 MENU 5 13 14 15 12 1 5 2 4 X0 X1 X2 X3 X4 X5 X6 X7 6 11 10 9 INH A B C X 3 100K 100K 100K 100K 100K 100K 100K 100K C30 1000 pF SCANADC0 C31 1000 pF SCANADC1 C29 1000 pF SCANADC2 C28 1000 pF SCANADC3 C27 1000 pF SCANADC4 C22 1000 pF SCANADC5 C24 1000 pF SCANADC6 C23 1000 pF SCANADC7 MISCENCMUX VDD VSS VEE C MISCENCMUX ADR[2:0] 16 8 7 SCANADC0 SCANADC1 SCANADC2 SCANADC3 SCANADC4 SCANADC5 SCANADC6 SCANADC7 ADR[2:0] VCC5 C56 0.1 uF SCANADC2 VCC5 SCANADC1 B 3 TAP7 2 R79 R78 VCC5 SCANADC3 SCANADC4 MAIN ENC Z5 VCC5 SUB ENC Z6 MAINENCA 3 REV COM /ENC_EN SUBENCB SUBENCA NOTES: PCB Revision B TAP1 TAP2 TAP3 TAP4 TAP5 TAP6 TAP7 SUBENCA A Elecraft, Inc. Copyright (C) 2007. L Johnson A B 1 2 RITENCA RITENCB RITENCA RITENCB OFFSET 3 C25 0.01 uF C26 0.01 uF C34 0.01 uF C36 0.01 uF C49 0.01 uF C54 0.01 uF C69 0.01 uF C68 0.01 uF MAINENCA SUBENCB VCC5 VFADCTAP MAINENCB /ENC_EN 5 4 3 2 1 SCANADC5 1K00 MAINENCB V VFADCTAP R57 10K0 10K0 5 4 3 2 1 J34 SCANADC7 Q7 MMBT3904 1 SCANADC2 XIT 4 10K0 10K0 10K0 10K0 10K0 10K0 10K0 10K0 CD74HC4051M Z7 SCANADC6 VCC5 U12 SCANADC3 SPEED COM Z4 SCANADC0 RIT S16 1 3 4 7 A B SWCOM SW MTG1 MTG2 AFX XFIL A>B A S14 R27 R22 R30 R14 R8 R11 R10 R7 C33 0.1 uF R47 R41 R46 R40 R60 R59 R65 R66 WIDTH COM J33 A/B 16 8 7 VDD VSS VEE CWT SCANADC3 C39 1000 pF 1K00 SPOT PRE SCANADC3 1 3 4 7 VFPADCMUX D R21 CLR M4 SCANADC0 INH A B C S VFPADCMUX VCC5 A B SWCOM SW MTG1 MTG2 Z3 SCANADC5 6 11 10 9 2 3 X SHIFT COM Z2 S17 X0 X1 X2 X3 X4 X5 X6 X7 SCANADC3 M3 SCANADC4 13 14 15 12 1 5 2 4 CD74HC4051M 2 S15 U3 SCANADC2 SCANADC0 SCANADC1 SCANADC3 SCANADC7 SCANADC4 SCANADC6 SCANADC5 3K00 D S2A Q1 MMBT3904 1 2 Title Elecraft K3: Front Panel - Switches Size B Document Number 2004070601 Date: Tuesday, November 24, 2009 Rev B.1 Sheet 1 7 of 7 5 RX1_IF+ RX1_IF- 4 RX IF BUFFER RX1_IF+ RX1_IFRX IF BUFFER RX1_BIF+ RX1_BIF- RX1_BIF+ RX1_BIFRX2_BIF+ RX2_BIF- MICIN D LOUT ROUT LHPOUT RHPOUT LINE_IN+ LINE_INBK_MICAF+ BK_MICAF- BK_MICAFBK_MICAF+ LINE_INLINE_IN+ MICIN RX2_BIFRX2_BIF+ C RX1_IFRX1_IF+ LRCLKPCM1804 CLK3MHZ AICBCLK MMISO MMOSI MSCK 3 CODECS RX1_BIF+ RX1_BIF- TCLK0 AICBCLK LRCLKAIC23 RX2_BIF+ DSPDX0 RX2_BIFAICADC LRCLKLIN CLK3MHZ LRCLKPCM1804 MICIN PCMADC LOUT ROUT LHPOUT RHPOUT LINE_IN+ LINE_INBK_MICAF+ BK_MICAF- MSCK MMOSI /AICCS /LINCS /RST MICS[2..0] CODECS MISC BK_MICAFBK_MICAF+ LINE_INLINE_IN+ MICIN RX2_BIFRX2_BIF+ RX1_IFRX1_IF+ SMOSI SSCK /CSDSP1A DIG0A MUTEA 100HZA /CSDSP2A SMISO MOSI SCK /CSDSPLOAD CMD /DVRCS LRCLKPCM1804 CLK3MHZ CTDOB AICBCLK /ENC1 MMISO AUXD0 MMOSI AUXD1 MSCK /DSP1BUSYA /RST DSP1DATAA /MISOEN DSP2DATA /RST5 /RST2 /SPIBOOT2 FX2 DX2 PRGEXP /ENC2 PCMDSP2 /ENDVR B TXIFQ TXIFI MICBIAS LINEOUT_R LINEOUT_L PHONES_R PHONES_L SPKR_R SPKR_L PH_SW BK_PH_SW /AUXDETECT ALC VREF VFWD HAGC1 VSMETER2 VSMETER VIFGAIN1 A TCLK0 AICBCLK LRCLKAIC23 DSPDX0 AICADC LRCLKLIN CLK3MHZ LRCLKPCM1804 PCMADC MSCK MMOSI /AICCS /LINCS /RST MICS[2..0] SMOSI SSCK /CSDSP1A DIG0A MUTEA 100HZA /CSDSP2A SMISO MOSI SCK /CSDSPLOAD CMD /DVRCS CTDOB /ENC1 AUXD0 AUXD1 /DSP1BUSYA /RST DSP1DATAA /MISOEN DSP2DATA /RST5 /RST2 /SPIBOOT2 FSX2 DX2 PRGEXP /ENC2 PCMDSP2 /ENDVR TXIFQ TXIFI MICBIAS LINEOUT_R LINEOUT_L PHONES_R PHONES_L SPKR_R SPKR_L PH_SW BK_PH_SW /AUXDETECT ALC VREF VFWD HAGC1 VSMETER2 VSMTR VIFGAIN1 2 1 ANALOG INTERFACE DSP TCLK0 MMISO MMOSI MSCK /ADCCS /DACCS AICBCLK LRCLKAIC23 DSPDX0 AICADC LRCLKLIN CLK3MHZ LRCLKPCM1804 PCMADC MMISO MMOSI MSCK /ADCCS /DACCS MMISO MMOSI MSCK nADCS nDACS VIFGAIN1 VSMETER VSMETER2 HAGC1 VFWD VREF ALC /AUXDSPDET BK_PH_SW PH_SW SPKR_R /AICCS /LINCS VIFGAIN1 VSMTR VSMETER2 HAGC1 VFWD VREF ALC ANALOG INTERFACE /RST LHPOUT RHPOUT MICS[2..0] MUTE1 SMOSI SSCK /CSDSP1 DIG0A MUTE 100HZ /CSDSP2 SMISO MOSI SCK /CSDSPLOAD MUTE1 LOUT ROUT HPCLK UP DAC AUDIO LHPOUT RHPOUT SPKR_L SPKR_R MUTE1 PHONES_L PHONES_R LOUT ROUT LINEOUT_L LINEOUT_R SPKR_L SPKR_R PHONES_L PHONES_R LINEOUT_L LINEOUT_R C HPCLK UP HPCLK UP CMD /DVRCS AUDIO CTDOB /ENC1 AUXD0 AUXD1 /DSP1BUSYA Linear Power +12V DSP1DATAA +12V MICBIAS MICBIAS Linear Power /MISOEN DSP2DATA /RST5 /DSPRST2 /SPIBOOT2 AUXDSPFSX AUXDSPDX PRGEXP /ENC2 PCMDSP2 /ENDVR TCLK0 LRCLKDAC /TXDACCS AICBCLK LRCLKDAC DSPDX0 MSCK MMOSI /TXDACCS TXDAC TCLK0 TXIFI AICBCLK LRCLKDAC DSPDX0 TXIFQ TXIFI TXIFQ B MSCK MMOSI /TXDACCS TXDAC DSP A MISC Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title NOTES: PCB Revision C 5 D /AUXDETECT BK_PH_SW PH_SW SPKR_R 4 3 2 K3 DSP: Top Level Size B Document Number 2004051101 Date: Wednesday, June 16, 2010 Rev C Sheet 1 1 of 9 5 4 3 2 1 U18 D nDACS MMOSI MSCK nDACS 9 8 7 1 VCC3 2 10 DIN SCLK SYNC LDAC VDD VOUTA 5 VOUTB 6 VREFA 4 VREFB 3 VIFGAIN1 D VIFGAIN1 D2 1 VCC3 VSMETER 3 R50 2 C106 10K BAT54C VSMETER 0.01 uF GND AD5302A VSMETER2 VCC2 SPKR_R SPKR_R R71 100R R10 100K R11 C17 0.1 uF D1 100K BAT54C 1 0.1 uF 3 C14 R28 10K /AUXDSPDET R30 10K PH_SW R29 10K BK_PH_SW C 2 C U8 ALC VFWD VREF HAGC1 B PH_SW BK_PH_SW /AUXDSPDET ALC VFWD VREF HAGC1 PH_SW BK_PH_SW /AUXDSPDET VCC3A 4 5 6 7 8 9 10 11 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 AIN8 DIN SCLK DOUT CS 14 16 15 1 2 AVDD DVDD 13 3 AGND DGND 12 MMOSI MSCK MMISO nADCS MMOSI MSCK MMISO nADCS B VCC3 ADC78H90CIMT NOTES: PCB Revision C Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A K3 DSP: Analog Interface Size A Document Number 2004051101 Date: Wednesday, June 16, 2010 2 Rev C Sheet of 2 1 9 5 4 3 VCC8A 1500 pF 5% C0G 0.015 uF 5% X7R 10 LHPOUT 60.4K 1% 34.0K 1% 9 8 10.5K 1% 11 C110 + R65 U30C TLC2274 R66 10.5K 1% 4 R64 5 + 6 - C111 1000 pF 5% C0G 11 R63 C109 1 C1 VCC8A C116 4 D 2 R3 R1 100K R8 100K C11 U30B 470 pF 2.7R D R6 2.7R 7 TLC2274 C2 0.47 uF R2 20K 1 C10 0.47 uF R9 20K 9 INB 2 SHUTDOWN MUTE1 4 5 10 INA 3 SPKR_L OUTB 7 SPKR_R GND GND VDD TAB BYPASS +12V 6 8 + 0.015 uF 5% X7R + 13 11 12 U30D 100 uF/6.3V C LINEOUT_L LINEOUT_R 14 10.5K 1% TLC2274 10.5K 1% C115 1000 pF 5% C0G U2 R70 4 R69 3 + 2 11 4 R68 C114 100 uF/6.3V C7 0.1 uF C113 1500 pF 5% C0G B 10 uF/25V C4 1 uF/25V VCC8A C112 34.0K 1% + C15 ROUT 10 uF/25V + C18 LOUT + + C 60.4K 1% 0.1 uF OUTA C8 3.3 uF RHPOUT C6 470 pF LM4950TS R67 0.1 uF U1 1000 pF 5% C0G VCC8A C3 U30A C19 0.47 uF 2 1 C16 0.47 uF 8 INB 4 6 7 3 CLK VDD UP/DN SHUTDOWN BYPASS GND TLC2274 HPCLK UP 1000 pF 5% C0G INA OUTA 1 C13 OUTB 9 C9 10 VCC5A PHONES_L PHONES_R B 5 LM4811MM + C22 10 uF/25V NOTES: PCB Revision C A A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title 5 4 3 2 K3 DSP: DAC Audio Size B Document Number 2004051101 Date: Wednesday, June 16, 2010 Rev C Sheet 1 3 of 9 5 4 3 C32 100 pF U7 LINE_IN+ R20 10K R17 10K 8 1 uF 3 C34 D LINE_IN- + 2 1 uF R18 10K U6A LM833D C45 1 uF C44 1 uF RLINEIN LLINEIN RHPOUT LHPOUT RHPOUT LHPOUT 10K U29 13 12 10K R23 10K 8 R26 C37 C BK_MICAF1 uF R24 10K 5 + 6 - R25 RHPOUT LHPOUT MODE 22 VCC3 DIN BCLK LRCIN XTI/MCLK 7 VMIDL 16 10K C43 10 9 U6B LM833D 4 BK_MICAF- ROUT LOUT ROUT LOUT BK_MICAF+ 1 uF ROUT LOUT SDIN SCLK CS 23 24 21 MMOSI MSCK /LINCS VCC8A C36 BK_MICAF+ RLINEIN LLINEIN 13 12 ROUT LOUT SDIN SCLK CS 23 24 21 MMOSI MSCK /AICCS MODE 22 VCC3 DIN DOUT BCLK LRCIN LRCOUT 4 6 3 5 7 DSPDX0 AICADC AICBCLK LRCLKAIC23 XTI/MCLK 25 TCLK0 XTO 26 MMOSI MSCK /AICCS D 1 - R19 19 20 10 9 RHPOUT LHPOUT 18 MCIN 17 MCBIAS 16 VMID 4 LINE_IN- 1 VCC8A C33 LINE_IN+ 2 100 pF C107 10 uF 10v ECJ VMID XTO 4 DSPDX0 3 5 AICBCLK LRCLKLIN 25 TCLK0 + VMID C47 10 uF/25V C48 0.1 uF 2 AVDD BVDD DVDD HPVDD 14 1 27 8 AVSS DVSS HPGND 15 28 11 CLKOUT 2 AVDD BVDD DVDD HPVDD 14 1 27 8 AVSS DVSS HPGND 15 28 11 LRCLKLIN TCLK0 VCC3A VCC3 C TLV320AIC23B 26 CLKOUT C108 0.1 uF /LINCS DSPDX0 AICADC AICBCLK LRCLKAIC23 VCC3A VCC3 R16 8 VCC8A 10K 3 C31 0.1 uF 2 U5A LM833D + C41 0.1 uF TLV320DAC23 U23 1 RX1_BIF+ RX1_BIF- - B MICIN R13 MICIN 10K MICS[2..0] MICS[2..0] R15 C30 1 uF 100K 8 7 + 5 - 6 4 A 12 13 X0 X1 X 2 1 Y0 Y1 Y 5 3 Z0 Z1 Z 100 pF MICS0 MICS1 MICS2 VCC3A VCC8A U5B LM833D 4 5 U4 4 C28 RX1_BIF+ RX1_BIF- 11 10 9 6 XC YC ZC INH 49.9K R14 10K 15 RX2_BIF+ RX2_BIF- 4 VCC 16 GND 8 VEE 7 RX2_BIF+ RX2_BIF_ 22 23 AGND 13 25 24 28 26 27 VCC5A VCC5A 74HCT4053M R22 18 15 17 16 1 3 2 14 R21 SCKI DATA/DSDL LRCK/DSDBCK VrefL BCK/DSDL VcomL AgndL FMT0 FMT1 S/M VinR OSR0 OSR1 VinR OSR2 VrefR BYPAS VcomR OVFR AgndR OVFL RST VCC VDD VinL VinL C89 0.1 uF 2.2K C80 0.1 uF PCMADC LRCLKPCM1804 CLK3MHZ B VCC3 /RST /RST VCC3 PCM1804DB C42 0.1 uF R27 2.2K + C40 10 uF/25V LRCLKAIC AICADC LRCLKAIC23 AICADC RHPOUT LHPOUT RHPOUT LHPOUT A NOTES: PCB Revision C Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title 5 DGND 6 7 8 9 10 11 12 20 21 19 14 TCLK0 PCMADC LRCLKPCM1804 CLK3MHZ 4 3 2 K3 DSP: CODECS Size B Document Number 2004051101 Date: Wednesday, June 16, 2010 Rev C Sheet 1 4 of 9 5 4 Y1 133 XIN 100R 132 XOUT C63 10 pF VCC3 H1 R35 33R TCLK0 TCLK1 TCLK0 DSPDR0 DSPCLKR0 DSPFSR0 DSPDX0 AICBCLK DSPFSX0 DSPDX0 C VCC3 DSP1DATAA /DSP1BUSYA R48 R45 10K 10K R44 R43 R47 R46 10K 10K 10K 10K VCC3 TDO TCK TCK EMU0 TCK TDI TDO TMS TRST EMU0 EMU1 VCC3 P59 TMS TDI DSP1DATAA /DSP1BUSYA 1 3 5 7 9 11 13 2 4 6 8 10 12 14 TRST EMU1 B JTAG-DSP VCC2 VCC3 U21 2 3 VDD RST 1 VSS MCP120D A /RST /RST 130 38 39 EXTCLK H1 H3 136 135 CLKMD0 CLKMD1 114 113 TCLK0 TCLK1 104 107 106 111 109 110 DR0 CLKR0 FSR0 DX0 CLKX0 FSX0 117 116 XF0 XF1 98 100 99 102 103 96 95 TCK TDI TDO TMS TRST EMU0 EMU1 6 15 23 31 37 43 53 60 69 77 86 94 108 115 129 143 138 139 DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD RSV0 RSV1 12 28 46 66 83 101 123 137 131 CVDD CVDD CVDD CVDD CVDD CVDD CVDD CVDD PLLVdd 134 2 9 18 25 34 40 49 56 63 72 80 89 PLLVss VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 30 29 27 26 24 22 21 20 19 17 16 14 13 11 10 8 7 5 4 3 1 144 142 141 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 93 92 91 90 88 87 85 84 82 81 79 78 76 75 74 73 71 70 68 67 65 64 62 61 59 58 57 55 54 52 51 50 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 STRB R/W 41 42 PAGE0 PAGE1 PAGE2 PAGE3 36 35 33 32 25 24 23 22 21 20 19 18 8 7 6 5 4 3 2 1 48 17 16 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 29 31 33 35 38 40 42 44 30 32 34 36 39 41 43 45 VDD 37 /PAGE1 /RD /WR 26 28 11 CE OE WE VSS VSS 27 46 2 15 7 10 8 SDI SCK SCLR RCK OE +5V 1 VCC 16 AUXDSPDX MMOSI MSCK /PAGE0 /PAGE1 AUXD0 AUXDSPDX 12 14 62 64 IO/GCLK0 IO/GCLK1 IO/GCLK2 IO/GCLK3 MMOSI MSCK 43 44 IO/DEV_OE IO/DEV_CLRn D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 /RDY /WR H1 /PAGE0 /PAGE1 /PAGE3 A0 A1 AUXD0 1 2 3 4 5 6 7 8 15 16 17 18 19 20 21 26 27 28 29 30 33 34 35 36 37 IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO 13 63 VCCINT VCCINT VCC3 /PAGE3 45 47 48 9 31 45 INT0 INT1 INT2 INT3 IACK EDGEMODE 122 121 120 119 44 124 /INT0 /INT1 /INT2 /INT3 59 80 94 VCCIO2 VCCIO2 VCCIO2 11 65 GNDINT GNDINT MCBL/MP SHZ RESET 125 128 127 VSS VSS VSS VSS VSS VSS 97 105 112 118 126 140 10 32 46 60 79 93 GNDIO GNDIO GNDIO GNDIO GNDIO GNDIO VCC3 VCCIO1 VCCIO1 VCCIO1 MICS0 MICS1 MICS2 VCC3 1 2 3 6 4 5 16 8 PRGEXP TDI TMS TCK TDO A2 AUXD1 A3 /RD MMISO /DVRCS CMD /ADCCS /SPIBOOT /DACCS /CSDSP1 DIG0A MUTE 100HZ /CSDSP2 /MISOEN /RST LEDST2 AUXDSPSFX LRCLKPCM1804 CLK3MHZ PCMDSP2 PCMADC SSCK SMOSI SMISO AICADC LRCLKAIC23 DSPDR0 /INT0 /INT1 /INT2 /INT3 LRCLKDAC /TXDACCS MUTE1 UP LRCLKLIN 23 22 24 25 CTDI CTMS CTCK CTDO TCLK0 /AICCS /LINCS TCLK1 DSPFSX0 DSPCLKR0 DSPFSR0 VCC3 /INT0 /INT1 /INT2 /INT3 /SHZ /HOLD AUXD1 MMISO /DVRCS CMD /ADCCS R40 R39 R41 R42 R36 R38 D3 10K 10K 10K 10K 10K 10K 220R 220R /PAGE0 PG2 /PAGE3 PG1 MOSI /ENC1 2 1 1A 1OE 1Y 3 CTDI SCK 5 4 2A 2OE 2Y 6 CTCK 9 10 3A 3OE 3Y 8 CTMS 12 13 4A 4OE 4Y 11 7 GND VCC 14 CTDO B CTDOB CTDOB VCC3 SN74LVC125A LRCLKDAC /TXDACCS MUTE1 UP LRCLKLIN P57 CTCK CTDO HPCLK VCC3 CTMS /AICCS /LINCS R62 /ENC1 /ENDVR /ENC2 C U13 DSP2DATA VCC3 10K 10K 10K 10K 10K 10K STATUS2 2 R53 1 AUXDSPFSX LRCLKPCM1804 CLK3MHZ PCMDSP2 PCMADC SSCK SMOSI SMISO DSP2DATA AICADC LRCLKAIC23 CTDI AICBCLK AICBCLK 1 2 3 4 5 6 7 8 9 10 330R JTAG - CPLD A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title EPM240TQFP100 3 D VCC3 /RST R58 /DSPRST R51 /SPIBOOT R52 MICS0 R31 MICS1 R32 MICS2 R34 D4 STATUS1 1 2 R54 /DACCS /CSDSP1 DIG0A MUTE 100HZ /CSDSP2 /MISOEN 10K /ENC1 /ENDVR /ENC2 15 14 13 12 11 10 9 7 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 A B C G1 G2A G2B VCC GND 74HC138M 38 39 40 41 42 47 48 49 50 51 52 53 54 55 56 57 58 61 66 67 68 69 70 71 72 73 74 75 76 77 78 81 82 83 84 85 86 87 88 89 90 91 92 95 96 97 98 99 100 HPCLK PRGEXP 9 U11 VCC3 IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO SDO /DSPRST2 /SPIBOOT2 R33 NOTES: PCB Revision C 4 GND Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 MICS[2..0] /DSPRST /SPIBOOT /DSPRST2 /SPIBOOT2 MICS0 MICS1 MICS2 PRGEXP 3 4 5 6 11 12 13 14 TPIC6C595D U17 /WR /SHZ /RSTDSP MOSI SCK /RST5 /CSDSPLOAD MOSI SCK /RST5 /CSDSPLOAD LEDST1 /RDY /HOLD RDY HOLD HOLDA D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 SST39VF800A /RSTDSP /DSPRST MICS[2..0] U22 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 TMS320VC33PGE 5 1 U10 C62 10 pF R37 2 U16 14.7456 MHz D 3 2 K3 DSP: DSP AND LOGIC Size B Document Number 2004051101 Date: Wednesday, June 16, 2010 Rev C Sheet 1 5 of 9 5 4 3 2 1 D D VCC2 C65 0.1 uF C64 0.1 uF C69 0.1 uF C58 0.1 uF C60 0.1 uF C66 0.1 uF C57 0.1 uF C59 0.1 uF C61 0.1 uF C68 0.1 uF C53 0.1 uF C71 0.1 uF VCC3 C + VCC3 +VIN OUT 3 2 GND TAB 4 3 + C103 10 uF/25V C100 0.1 uF UA78M05CDC VI GND 1 VO VO 2 4 FAN1086M33 + C93 100 uF/10V VCC2 U9 U26 1 +12V C85 100 uF/10V VCC5A U27 2 IN 7 8 3 SHDN FAULT ADJ GND CC C70 0.1 uF 5 6 +VIN OUT 3 2 GND TAB 4 L1 LP3982 100 uH C86 0.1 uF +5V C54 0.033 uF C56 10 uF 10v ECJ C74 0.1 uF C78 0.1 uF C38 0.1 uF C87 0.1 uF C105 0.1 uF + C104 10 uF/25V + C55 0.1 uF MICBIAS VCC3 B C75 0.1 uF VCC8A C77 0.1 uF VCC8A 1 C72 0.1 uF 1 4 OUT OUT C102 0.1 uF U28 C VCC3 +5V C27 10 uF/25V VCC3A C35 0.1 uF L2 100 uH B UA78M08CDC C73 0.1 uF C52 0.1 uF + C51 10 uF/25V C49 0.1 uF TP2 1 2 C50 0.1 uF C46 0.1 uF A B GND VCC5A TP1 1 2 A B GND C23 0.1 uF + C29 10 uF/25V C79 0.1 uF C12 0.1 uF C21 0.1 uF C39 0.1 uF TP3 1 2 A B GND NOTES: PCB Revision C A A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title 5 4 3 2 K3 DSP: Power Supply Size B Document Number 2004051101 Date: Wednesday, June 16, 2010 Rev C Sheet 1 6 of 9 5 4 P31 MOSI SCK MISO MUTE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 D /DSP1BUSY /DSP2BUSY VSMETER /CSDSP1 /CSDSP2 /CSDSPLOAD DSP1DATA DSP2DATA 3 2 5 MOSI SCK 6 7 1 J1 VSMETER 2 3 4 /CSDSPLOAD 8 9 DSP2DATA PH_SW C26 0.1 uF PHONES MOSI SCK /CSDSP1 DIG0 PH_SW R12 8.2R PHONES_L R4 8.2R PHONES_R 100HZ /CSDSP2 C MICBIAS MICIN MICBIAS DSP MIC J52 SMISO SMOSI SSCK /CSDSP2A /RST2 DSP2DATAA /SPIBOOT2 PCMDSP2 LRCLKPCM1804 CLK3MHZ AICBCLK FSX2 DX2 /DSP2BUSYA /AUXDETECT /ENC2 AUXD0 RX2_BIFVSMETER2 RX2_BIF+ DSP2DATA AUXD1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 B Aux DSP /RST2 /SPIBOOT2 PCMDSP2 LRCLKPCM1804 CLK3MHZ AICBCLK FX2 DX2 /AUXDETECT /ENC2 AUXD0 RX2_BIFVSMETER2 RX2_BIF+ AUXD1 VCC8A VCC3 RX1_IF+ RX1_IF- TXIFI TXIFQ RX2_IF+ RX2_IFVIFGAIN1 VIFGAIN2 VFWD VREF R49 10K +5V +5V VIFGAIN1 1 2 3 4 5 1 19 G1 G2 VCC GND 20 10 VCC3 +5V HAGC1 HAGC2 HAGC1 +12V PRGEXP 100HZA /CSDSP2A SMOSI SSCK /CSDSP1A DIG0A 100HZA /CSDSP2A D VCC3 18 16 14 12 9 7 5 3 1Y1 1Y2 1Y3 1Y4 2Y1 2Y2 2Y3 2Y4 1A1 1A2 1A3 1A4 2A1 2A2 2A3 2A4 2 4 6 8 11 13 15 17 20 10 VCC GND 1G 2G 1 19 SMISO SMISO /DSP1BUSYA /DSP2BUSYA /RST MUTEA /MISOEN /DSP1BUSYA /RST MUTEA /MISOEN 74VHCT244 DSP1DATAA DSP1DATAA 1 STNDO1 KDVR3 C 2 CTDOB /ENC1 J50 SPKR_L SPKR_L SPKR_R SPKR_R BK_PH_SW ALC BK_PH_L BK_PH_R LINEOUT_R LINEOUT_L BK_MICAFBK_MICAF+ LINE_INLINE_IN+ DIG0 1A 1OE 1Y 3 5 4 2A 2OE 2Y 6 DSP2DATA CTDOB /ENC1 9 10 3A 3OE 3Y 8 MISO SMISO /ENC2 12 13 4A 4OE 4Y 11 7 GND VCC 14 4 NC7SZ14 SPKR_L SPKR_R BK_PH_SW ALC R5 R7 LINEOUT_R LINEOUT_L BK_MICAFBK_MICAF+ LINE_INLINE_IN+ 1 STNDO2 AUX DSP 1 STNDO3 K3FP 1 STNDO4 K3FP 1 1 STNDO5 AUX DSP 1 1 STNDO6 AUX DSP 1 1 STNDO7 K3FP PJG1 1 STNDO8 K3FP 1 STNDO9 SHIELD +5V 74HCT125 8.2R 8.2R PHONES_L PHONES_R C67 0.1 uF PHONES_L PHONES_R THERM01 THERM02 J54 1 2 3 4 5 6 7 8 9 10 SPARE1 DSP AF MMISO MMOSI MSCK /DVRCS CMD /MCLR PGD PGC MMISO MMOSI MSCK /DVRCS CMD PJG2 U14 SCK DSP2DATA A MOSI /ENDVR /ENDVR THERM03 VCC3 DVR 2 1 1A 1OE 1Y 3 5 4 2A 2OE 2Y 6 PGC 9 10 3A 3OE 3Y 8 /MCLR 12 13 4A 4OE 4Y 11 PGD 7 GND VCC 14 3 B FIDCL1 FIDCL2 NOTES: PCB Revision C A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title VCC3 SN74LVC125A 4 DSP1DATA 2 1 DSP2DATAA U12 PRGEXP Aux DSP 5 SMOSI SSCK /CSDSP1A DIG0A U15 DSP IF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 18 17 16 15 14 13 12 11 C76 0.1 uF VFWD VREF J53 RX2_IF+ RX2_IFHAGC2 VIFGAIN2 /DSP1BUSY /DSP2BUSY /RST5 MUTE /RST5 TXIFI TXIFQ 3 MICIN 1 2 3 4 5 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 74LCX541 5 P32 RX1_IF+ RX1_IF100HZ A1 A2 A3 A4 A5 A6 A7 A8 U19 J51 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 U20 2 3 4 5 6 7 8 9 C5 0.1 uF MISO FP-DSP 1 2 K3 DSP: INTERCONNECTS AND MISCELLANEOUS Size B Document Number 2004051101 Date: Wednesday, June 16, 2010 Rev C Sheet 1 7 of 9 5 4 3 2 1 D D VCC8A R55 909R RX1_IF- R57 RX1_IF+ 8 3K + 1 - C82 R56 RX1_BIF- 51R 5 C88 2700 pF 4 EN OPA1632D 10 uF/10V R59 C90 10 uF/10V RX1_BIF+ 51R C 6 7 10 uF/16V 1000 pF U24 2 Vocm + 10 uF/16V C92 R60 C 3K + C84 3 C81 C91 R61 1000 pF 909R VCC8A B B C83 0.1 uF NOTES: PCB Revision C Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A K3 DSP: RX IF BUFFER Size A Document Number 2004051101 Date: Wednesday, June 16, 2010 2 Rev C Sheet of 8 1 9 5 4 3 2 1 D D U25 TXROUT TXLOUT C99 10 uF 10v ECJ C TXIFQ TXIFI 13 12 ROUT LOUT 10 9 RHPOUT LHPOUT C96 10 uF 10v ECJ SDIN SCLK CS 23 24 21 MMOSI MSCK /TXDACCS MODE 22 VCC3 DIN 4 DSPDX0 BCLK LRCIN 3 5 AICBCLK LRCLKDAC 25 TCLK0 XTI/MCLK VMIDT + C98 10 uF/16V 16 VMID XTO CLKOUT 2 AVDD BVDD DVDD HPVDD 14 1 27 8 AVSS DVSS HPGND 15 28 11 C101 0.1 uF B 26 DSPDX0 AICBCLK LRCLKDAC TCLK0 VCC3 L3 TXIFQ TXIFI MMOSI MSCK /TXDACCS 100 uH C C97 0.1 uF VCC3AT C95 0.1 uF + C94 10 uF/25V B TLV320DAC23 NOTES: PCB Revision C Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A K3 DSP: TX DAC Size A Document Number 2004051101 Date: Wednesday, June 16, 2010 2 Rev C Sheet of 9 1 9 5 4 3 2 VCC8A C6 1500 pF 5% C0G 0.015 uF 5% X7R 1 60.4K 1% 34.0K 1% 3 + 2 11 C4 R5 U1A 1 10.5K 1% TLC2274 R7 4 R3 4 R1 TP1 AFIN1 VCC8A C2 10.5K 1% 12 + 13 - C8 1000 pF 5% C0G 11 D VCC8A TP5 AFOUT1 1 TLC2274 34.0K 1% + 6 11 C5 5 R6 U1B 7 10.5K 1% TLC2274 R8 4 4 1 C 0.015 uF 5% X7R R4 60.4K 1% 14 VCC8A 10.5K 1% 10 + 9 - C9 1000 pF 5% C0G 11 TP4 AFIN2 U1D C7 1500 pF 5% C0G R2 D 1000 pF 5% C0G C3 C 1 U1C 8 TP6 AFOUT2 1 TLC2274 1000 pF 5% C0G VCC8A B TP2 +8V TP3 GND B 1 C1 0.1 uF 1 Elecraft, Inc. Copyright (C) 2009 - 2010. L Johnson A Title 5 4 3 A K3: AF Filter Size A Document Number E2008090801 Date: Wednesday, June 16, 2010 2 Rev A Sheet 1 of 1 1 C:\Projects\K3\Schematics\K3 LPA revA.sch - Sheet1 J44E 3 2 1 0.5-2/2-3.5 MHz C1 4 2000 K1A C3 .01 L1 L3 18 10 C5 4-7/7-10 MHz C4 .01 L2 18 390 C2 2000 3 2 K2A K3A L6 C13 1.5 7 L7 10 1.5 C12 1500 C10 910 5 K3B 6 C14 56 K4B 6 4 L8 36 3 2 7 K2B 3 2 910 K1B 6 C6 2000 C9 4 5 C11 1500 5 7 K4A 3 6 4 2 7 5 RESET = 0.5-2 L4 L5 L10 L9 RESET = 4-7 SET = 2-3.5 2.2 2.2 1.0 1.0 SET = 7-10 J44C 3 2 1 18-23/23-28 MHz 10-14/14-18 MHz L13 6.8 L12 22 0.56 C20 C18 820 510 K6A RFC1 22 4 6 0.39 0.39 3 4 LD_BPF2 5 6 7 8 MISO3 VCC GND 7 7 RESET = 18-23 SET = 23-28 SIN SRCK /Q0 /Q7 /Q1 /Q6 /Q2 /Q5 /Q3 /Q4 /CLR RCK /G SOUT 15 14 NOTE: 5V 16 SCK3 8 1 K1 13 K2 12 K4 11 10 9 K1-K8 are shown in the RESET position. All relays are mounted on the back side of the PCB. K3 LD_BPF2 .01 SCK3 C31 5 K7B U1 TPIC6C595D 2 MISO3 3 5 0.68 J44A 1 2 L19 C39 5 470 K8A L20 .01 C26 6 L15 1 4 K8B 3 5V C28 560 C36 .01 C35 SET = 14-18 0.22 6 5 L14 0.68 L17 L18 5.2 35t #28, T37-2 C34 7 4 C29 9 3 6 RESET = 10-14 2 C30 9 L16 0.22 2 7 K6B 3 2 K7A 560 U2 TPIC6C595D 1 MOSI3 2 3 C40 .01 4 5 6 MISO3 7 8 VCC GND SIN SRCK /Q0 /Q7 /Q1 /Q6 /Q2 /Q5 /Q3 /Q4 /CLR RCK /G SOUT 5V 16 15 14 SCK3 8 1 K5 13 K6 12 K8 11 K7 Appendix B 10 9 LD_BPF2 .01 C44 2 K5B 6 (Cp ~3 pF) C25 470 4 5 C33 3 22 C32 0.56 C27 C43 L11 820 C22 C42 C17 510 C21 C41 4 K5A C19 Elecraft KBPF3 By Rev. W. Burdick A Date 6/29/07 Sht. 1 of 4 5 4 3 2 1 L2 D D 100 uH R14 D5 BAP64-04 C15 0.1 uF 1 2 L1 3 R15 P41A 4-pin RA P41B 4-pin RA 100 uH C16 0.1 uF C3 4 3 2 1 300R 4 3 2 1 68R C14 K1 2 0.01 uF C5 0.01 uF C4 0.1 uF 0.01 uF 3 4 9 C C17 0.1 uF K2 0.01 uF 1 8 7 D1 2 BAP64-05 1 10 12V_SW 2 R1 1K 7R DPDT R9 /LP 1 3 C12 0.01 uF 7 1 10 12V_SW 0.01 uF C 9 8 DPDT Q2 4 C1 R11 1K R8 2K2 2 3 3 C7 MMBT3906 2K2 C2 0.01 uF C6 RF Detector RFC1 47 uH C9 1000 pF U1B TLV272 5 + 6 - 7 3 + 2 - C11 0.1 uF U1A TLV272 1 MOSI3 Q1 MMBT3904 1 R13 100R LD_XV 2 2 15 7 10 8 SDI SCK SCLR RCK OE 1 VCC 4 D2 R3 12V_SW 2 1M A R6 100K 470K R5 180K 3.6VDC ~ 1.0 mW R4 330R SCK3 R2 16 7T 1N5711W C13 100 pF GND Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 SDO 3 4 5 6 11 12 13 14 /LP MISO3 4. W4 must be installed on the RF board when the KXV3 is installed (between RF-P86 and KXV3-P87). C10 0.01 uF TPIC6B595DW C8 0.01 uF Title 3 A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson K3 RF Board 4 1. KXV3-1 and -2 modules are soldered together via right-angle male connectors at J/P41A/C. 3. W1 and W2 on the RF board must be removed or cut when the KXV3 is installed. 9 P66 5 NOTES: 2. K1 and K2 are DPDT relays shown in RESET position. 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2K2 D4 5V1 U2 3 4 R7 1M R12 1K 8 8 1 1N5711W B 12V_SW 0.01 uF 3 D3 R10 1 B 2 LPTX 2 KXV3: Main Size B Document Number 2006030602 Date: Wednesday, June 16, 2010 Rev B1 Sheet 1 1 of 1 5 4 3 2 1 L2 RFC2 J1 100 uH 47 uH 1 2 3 C15 C20 0.01 uF XVTR IN INT 0.1 uF R14 68R D P41B K3 4 D5 BAP64-04 1 C4 R15 L1 0.01 uF 0.01 uF 4-pin RA 7 1 10 12V_SW C3 D L3 0.15 uH C22 DPDT C23 4 3 2 1 3 P41A 4-pin RA 9 8 2 4 3 2 1 2 3 300R C14 K1 2 0.01 uF C5 0.01 uF C17 0.1 uF 0.1 uF 3 4 J2 47 uH 1 2 3 K2 1 8 7 56 pF RFC3 D1 9 C C16 0.1 uF 100 uH 2 BAP64-05 1 10 12V_SW 2 Q2 R1 1K 7R C12 0.01 uF 7 1 10 12V_SW DPDT R9 /LP 1 3 0.01 uF C 9 8 DPDT R8 2K2 4 C1 R11 1K XVTR OUT INT 2 3 3 C7 56 pF MMBT3906 2K2 C2 0.01 uF C6 RFC1 RF Detector C19 0.01 uF 47 uH 5 + 6 - 7 3 + 2 - R12 1K C11 0.1 uF U2 3 1 MOSI3 Q1 MMBT3904 1 R13 100R LD_XV 2 2 15 7 10 8 SDI SCK SCLR RCK OE 1 VCC 4 D2 R3 12V_SW 2 1M A R6 100K 470K R5 180K 3.6VDC ~ 1.0 mW 16 R4 330R SCK3 R2 7T 1N5711W C13 100 pF GND Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 SDO 3 4 5 6 11 12 13 14 /LP MISO3 NOTES: 2. K1 - K3 are DPDT relays shown in RESET position. 9 TPIC6B595DW C10 0.01 uF C8 0.01 uF Title K3 RF Board 4 A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson P66 5 3 1. KXV3-1 and -2 modules are soldered together via right-angle male connectors at J/P41A/C. C18 0.01 uF 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 1 2K2 D4 5V1 C21 0.01 uF U1A TLV272 4 C9 1000 pF U1B TLV272 8 8 1 1N5711W R7 1M B 12V_SW 0.01 uF 3 D3 R10 1 B 2 LPTX 2 KXV3A: Main Size B Document Number 2006030602 Date: Wednesday, June 16, 2010 Rev D Sheet 1 1 of 1 5 4 3 2 1 D D GAP1 2 J38 J39 XVTR In XVTR Out Q1 BCV27 1 1 2 3 4 5 BAT54S 5 4 3 2 1 1 2 3 4 5 C1 D1 3 SPARK GAP J37 RX Ant Out 5 4 3 2 1 J36 RX Ant In 2 pF 4-pin RA J41A 3 1 C2 Not Used R2 1M C C3 4 3 2 1 4 3 2 1 R1 100K 2 C 0.1 uF 4-pin RA J41B J40 1 2 3 4 5 I.F. Out J87 1 2 3 B B RX IF 1 MT1 SWAGE 1 MT2 SWAGE Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A KXV3: Connector Size A Document Number 2006030602 Date: Wednesday, June 16, 2010 2 Rev A1 Sheet 1 of 1 1 L10 96 nH L1 L2 L3 L4 L5 L6 L7 L8 L9 0.48 µH 1.0 µH 2.1 µH 4.4 µH 9.0 µH 40 nH J69A 0.05 µH To J7 (ANT1) R1 SA1 6 560K 4 R2 SA2 13 I.F. 0.11 µH 4 4 6 P42 Trap 2 Trap 0.23µH 2 11 K1 9 8 560K 1 C10 3900 11 8 6 9 11 13 K2 4 8 6 9 11 13 K3 4 8 6 9 11 13 4 8 6 9 11 13 K4 K5 To J8 (ANT2) J69B Main Ant. Switch 6 K17 To Sub. RX 7 6 9 11 4 8 6 9 11 13 K6 4 8 6 9 11 13 K7 6 3 9 K9 11 4 2 K19 13 8 Sub. RX Ant. Switch C12 9 47 13 6 4 9 6 11 K10 K11 4 13 9 8 6 11 4 13 8 13 9 C1 C2 C3 12 22 39 11 K12 6 4 9 8 4 13 6 11 K14 4 9 8 11 K15 13 9 8 C4 82 6 11 K13 11 8 9 4 13 9 8 6 K16 C5A C5B C6 C7A C7B C8A 150 12 330 330 330 330 13 C8D 330 U2 5V C16 100 2 0.1 3 4 5 6 7 8 VCC GND SIN SRCK /Q0 /Q7 /Q1 /Q6 /Q2 /Q5 /Q3 /Q4 /CLR RCK SOUT /G C8B C8C R3 TPIC6C595D C13 9 13 K8 4 8 1 8 C TX 8 11 C Ant./C TX Select J43 8 13 4 C ANT K18 4 330 330 470 16 C17 100 MOSI3 C19 100 SCK3 C21 100 LD_ATU R4 15 1 16 14 K8 13 K7 12 K6 11 K5 10 C18 100 C33 R5 .01 C20 100 K14 9 470 470 K13 K12 K11 5 6 7 8 SRCK /Q0 /Q7 /Q1 /Q6 /Q2 /Q5 /Q3 /Q4 RCK /CLR /G SOUT C26 C45 C36 C27 C44 C47 C48 2 C15 0.1 3 4 16 5 .01 15 1 16 14 K4 13 K3 12 K2 11 K1 10 K16 9 K10 K9 K15 .01 6 7 8 C43 VCC GND SIN SRCK /Q0 /Q7 /Q1 /Q6 /Q2 /Q5 /Q3 /Q4 /CLR RCK /G SOUT 47 uH K18 15 1 16 14 2 4 6 8 10 12 14 16 18 20 1 3 5 7 13 K17 12 11 .01 10 9 C11 C24 0.1 C25 0.1 9 11 13 15 17 19 J70 .01 RF Board .01 R6 C54 C49 MISO3 100 C46 12V_ATU C52 .01 U3 C22 .001 C23 .001 C28 C29 C30 C31 C38 C42 C39 U1 C37 TPIC6C595D RFC1 1 16 C51 4 GND SIN 1 5V C41 3 VCC K19 10 C55 2 C57 .01 TPIC6C595D C40 C14 0.1 C50 C35 C53 C34 C32 5V 1 C56 .01 U4 .01 2 K1-K19 are shown in the RESET position. = Parts mounted on the bottom of the PC board. In addition to these, all relays are on the bottom. 78L05 J72 1 5V OUT IN GND Elecraft B y W. Burdick E. Swartz KAT3 ATU Rev. XD3 Date 7/11/07 Sht. 1 of 1 5 4 3 2 1 ST1 1 D VCC3 U2 MOSI2 MISO2 SCK2 /CS 13 14 12 11 17 18 19 20 23 24 25 26 Vcc VCCP 6 22 GNDP SER/BYTE GND 21 7 2 3 RESET WP RDY 1 RDY 16 D0 D1 D2 D3 D4 D5 D6 D7 + R4 VCC3 47K VCC3 B PGC PGD R3 R2 TP1 1 TP1 TP TP2 1 TP2 TP TP3 1 TP3 TP 1 TP4 TP TP4 TP5 TP5 TP 1 5 /DVRCS TP2 TP1 120R 120R VCC3 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 0.1 uF C6 0.1 uF VCC3 C U1 /WP /RST RDY MISO1 SCK1 2 3 1A 2Y /DVRCS 1 7 1OE 2OE 1Y 2A 6 5 VCC 8 GND 4 MISO SCK VCC3 74LVC2G125 VCC3 P54 D7 D6 D5 D4 D3 D2 D1 /BYTE C5 10 uF 10v ECJ D0 TP5 TP4 TP3 CMD MISO MOSI SCK /DVRCS CMD /MCLR PGD PGC 1 2 3 4 5 6 7 8 9 10 VCC3 Z1 8.0 MHz 1 B Main DSP 3 VCC3 SCK1 MOSI MISO1 Elecraft, Inc. Copyright (C) 2008 - 2010. L Johnson Title PIC24HJ64GP206 4 C4 0.1 uF 2 SCK2 MISO2 MOSI2 /MCLR /CS RG13 RG12 RG14 RG0 RG1 RF1 RF0 VDD VDDcore RD7 RD6 RD5 RD4 RD3 RD2 RD1 PGC2/RC14 PGD2/RC13 RD0 RD11 RD10 U1CTS/RD9 RD8 VSS CLK0/RC15 CLKIN/RC12 VDD SCL1/RG2 SDA1/RG3 U1RTS/SCK1/RF6 U1RX/SDI1/RF2 U1TX/SDO1/RF3 C3 10K AT45DB642D-TU RG15 RC1 RC2 RG6/SCK2 RG7/SDI2 RG8/SDO2 MCLR RG9/SS2 VSS VDD RB5 RB4 RB3 RB2/SS1 RB1/PGC3 RB0/PGD3 RB6/PGC1 RB7/PGD1 AVDD AVSS RB8/U2CTS RB9 RB10/TMS RB11/TDO VSS VDD RB12/TCK RB13/TDI RB14/U2RTS RB15 RF4/U2RX RF5/U2TX C2 0.1 uF R1 U3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 C1 10 uF/25V VCC3 D[7:0] DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 SI SO SCK CS /RST /WP /BYTE C A D STANDOFF 3 A K3: Digital Voice Recorder Size A Document Number 2004090101 Date: Wednesday, June 16, 2010 2 Rev XG Sheet 1 of 1 1 C:\Projects\K3\Schematics\KPAIO3revXI.sch - Sheet1 5 4 3 2 1 D D DSP P52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 C MISO MOSI SCK /CSDSP2 /RST2 DSP2DATAA /SPIBOOT2 DR2 FSR2 CLKR2 CLKX2 FSX2 DX2 /DSP2BUSYA /AUXDETECT /ENC2 AUXDSPD0 RX2_BIFVSMETER2 RX2_BIF+ DSP2DATA AUXDSPD1 MISO MOSI SCK /CSDSP2 CLKR2 FSR2 DR2 CLKX2 FSX2 DX2 DSP2DATAA DSP2DATA ANALOG INTERFACE MISO MOSI SCK /CSDSP2 CLKR2 FSR2 DR2 CLKX2 FSX2 DX2 DSP2DATAA DSP2DATA /DSP2BUSYA MMISO MMOSI MSCK MMOSIA MSCKA /DACCS /ADCCS MMISO MMOSI MSCK MMISO MMOSI MSCK MMOSIA MSCKA VIFGAIN2 VSMETER2 HAGC2 MMOSIA MSCKA /DACCS /ADCCS VIFGAIN2 VSMETER2 HAGC2 /DACCS /ADCCS ANALOG INTERFACE C /DSP2BUSYA /ENC2 /RST2 /SPIBOOT2 /ENC2 /RST2 /SPIBOOT2 AUXDSPD0 AUXDSPD1 AUXDSPD0 AUXDSPD1 DSP +8V VCC3 Power Main DSP Power P53 B 1 2 3 4 5 RX2_IF+ RX2_IFHAGC2 VIFGAIN2 B IF BUFFER RX2_IF+ RX2_IF- RX2_IF+ RX2_IF- RX2_BIF+ RX2_BIF- RX2_BIF+ RX2_BIF- IF BUFFER 1 STNDO1 MAIN DSP 1 STNDO2 MAIN DSP 1 STNDO3 MAIN DSP Main DSP VCC3 /RST2 /SPIBOOT2 R21 R20 10K0 10K0 NOTES: PCB Revision A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A K3 Aux DSP: Top Level Size A Document Number 2004051101 Date: Wednesday, June 16, 2010 2 Rev A0 Sheet of 1 1 5 5 4 3 2 1 D D U7 MMOSI MSCK /DACCS MMOSI MSCK /DACCS VCC3 9 8 7 1 2 10 C DIN SCLK SYNC LDAC VDD VOUTA 5 VIFGAIN2 VOUTB 6 VSMETER2 VREFA 4 VREFB 3 VIFGAIN2 VSMETER2 VCC3A GND C AD5302A U4 HAGC2 HAGC2 VCC3A 4 5 6 7 8 9 10 11 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 AIN8 DIN SCLK DOUT CS 14 16 15 1 MMOSIA MSCKA MMISO /ADCCS 2 AVDD DVDD 13 VCC3 MMOSIA MSCKA MMISO /ADCCS B B 3 AGND DGND 12 ADC78H90CIMT NOTES: PCB Revision A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A K3 Aux DSP: Analog Interface Size A Document Number 2004051101 Date: Wednesday, June 16, 2010 2 Rev A0 Sheet of 2 1 5 5 4 Y1 133 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 30 29 27 26 24 22 21 20 19 17 16 14 13 11 10 8 7 5 4 3 1 144 142 141 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 93 92 91 90 88 87 85 84 82 81 79 78 76 75 74 73 71 70 68 67 65 64 62 61 59 58 57 55 54 52 51 50 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 STRB R/W 41 42 PAGE0 PAGE1 PAGE2 PAGE3 36 35 33 32 /PAGE0 /PAGE1 RDY HOLD HOLDA 45 47 48 /RDY /HOLD INT0 INT1 INT2 INT3 IACK EDGEMODE 122 121 120 119 44 124 /INT0 /INT1 /INT2 /INT3 MCBL/MP SHZ RESET 125 128 127 XIN 100R 132 XOUT D C8 10 pF VCC3 H1CLK 33R DX2 CLKX2 FSX2 C VCC3 C24 22 pF DSP2DATAA /DSP2BUSYA R14 R4 R3 R2 R13 R12 TMS TDI VCC3 B TDO TCK TCK EMU0 CLKMD0 CLKMD1 114 113 TCLK0 TCLK1 DX2 CLKX2 FSX2 104 107 106 111 109 110 DR0 CLKR0 FSR0 DX0 CLKX0 FSX0 DSP2DATAA /DSP2BUSYA 117 116 XF0 XF1 98 100 99 102 103 96 95 TCK TDI TDO TMS TRST EMU0 EMU1 10K0 TCK 10K0 TDI TDO 10K0 TMS 10K0 TRST 10K0 EMU0 10K0 EMU1 VCC3 P60 1 3 5 7 9 11 13 2 4 6 8 10 12 14 TRST EMU1 JTAG-DSP VCC2 A EXTCLK H1 H3 136 135 DSPDR DSPCLKR DSPFSR 130 38 39 6 15 23 31 37 43 53 60 69 77 86 94 108 115 129 143 138 139 DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD RSV0 RSV1 12 28 46 66 83 101 123 137 131 CVDD CVDD CVDD CVDD CVDD CVDD CVDD CVDD PLLVdd 134 2 9 18 25 34 40 49 56 63 72 80 89 PLLVss VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 /PAGE1 /RD /WR 26 28 11 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 CE OE WE D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 29 31 33 35 38 40 42 44 30 32 34 36 39 41 43 45 VDD 37 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 4 10K0 /ENC2 DSP2DATA U6 MOSI /ENC2 2 1 1A 1OE 1Y 3 CTDI CTDO 5 4 2A 2OE 2Y 6 MISO DSP2DATA 9 10 3A 3OE 3Y 8 CTMS SCK 12 13 4A 4OE 4Y 11 CTCK 7 GND VCC 14 27 46 CTDO VCC3 CTMS CTDI U5 D8 D9 DR2 FSR2 DR2 FSR2 D0 D1 D2 D3 D4 D5 D6 D7 D10 D11 D12 D13 D14 D15 /RDY H1CLK /PAGE0 /PAGE1 /PAGE3 A0 A1 A2 /RD /WR /PAGE3 VCC3 R8 VCC3 10K0 R7 R9 R10 R11 10K0 10K0 10K0 10K0 R6 10K0 97 105 112 118 126 140 12 14 62 64 IO/GCLK0 IO/GCLK1 IO/GCLK2 IO/GCLK3 43 44 IO/DEV_OE IO/DEV_CLRn 1 2 3 4 5 6 7 8 15 16 17 18 19 20 21 26 27 28 29 30 33 34 35 36 37 IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO 13 63 VCCINT VCCINT 9 31 45 VCCIO1 VCCIO1 VCCIO1 59 80 94 VCCIO2 VCCIO2 VCCIO2 11 65 GNDINT GNDINT 10 32 46 60 79 93 GNDIO GNDIO GNDIO GNDIO GNDIO GNDIO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO IO TDI TMS TCK TDO 38 39 40 41 42 47 48 49 50 51 52 53 54 55 56 57 58 61 66 67 68 69 70 71 72 73 74 75 76 77 78 81 82 83 84 85 86 87 88 89 90 91 92 95 96 97 98 99 100 CLKR2 DSPCLKR /DSPRST /INT0 /INT1 /INT2 /INT3 23 22 24 25 CTDI CTMS CTCK CTDO 1 2 3 4 5 6 7 8 9 10 JTAG - CPLD VCC3 SMISO SMOSI SSCK /CSDSP2 /RST2 /SPIBOOT2 R17 R16 R15 R19 3K00 3K00 3K00 3K00 MISO MOSI SCK /ENC2 C MISO MOSI SCK /CSDSP2 /RST2 /SPIBOOT2 DSPDR DSPFSR MMOSI MSCK /DACCS AUXDSPD0 AUXDSPD1 /ADCCS MMOSIA MMISO MSCKA VCC3 MMOSI MSCK /DACCS AUXDSPD0 AUXDSPD1 /ADCCS MMOSIA MMISO MSCKA MMOSI MMISO MSCK /ADCCS /DACCS /DSPRST SMOSI SMISO SSCK MMOSI MMISO MSCK ADCCS DACCS /DSPRST SMOSI SMISO SSCK /PAGE0 PG0 /PAGE3 PG3 /INT0 /INT1 /INT2 /INT3 /INT0 /INT1 /INT2 /INT3 B CLKR2 NOTES: PCB Revision A A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson Title EPM240TQFP100 3 VCC3 P61 VCC3 CTCK VSS VSS D SN74LVC125A SST39VF800A /WR MCBL /SHZ /DSPRST 25 24 23 22 21 20 19 18 8 7 6 5 4 3 2 1 48 17 16 R18 VCC3 TMS320VC33PGE 5 1 U2 C13 10 pF R1 2 U3 14.7456 MHz R5 3 2 K3 Aux DSP: DSP and Logic Size B Document Number 2004051101 Date: Wednesday, June 16, 2010 Rev A0 Sheet 1 3 of 5 5 4 3 2 1 D D +8V R26 909R RX2_IF- 8 3K00 + 1 - + R23 51R 5 C37 2700 pF 4 RX2_BIF- 10 uF/25V C34 EN OPA1632D R22 51R RX2_BIF+ C 10 uF/25V 6 7 10 uF/25V C35 U8 2 Vocm + 10 uF/25V C42 R25 C 3K00 + RX2_IF+ R27 + C43 3 C41 1000 pF C40 R24 1000 pF 909R C38 +8V B B 0.1 uF NOTES: PCB Revision A Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson A Title 5 4 3 A K3 Aux DSP: IF Buffer Size A Document Number 2004051101 Date: Wednesday, June 16, 2010 2 Rev A0 Sheet of 4 1 5 5 4 D 3 VCC3 +8V C39 0.1 uF + C36 10 uF/25V 2 1 D VCC2 U1 2 IN 7 8 3 SHDN FAULT ADJ GND CC 1 4 OUT OUT 5 6 LP3982 C1 0.033 uF C3 10 uF 10v ECJ VCC2 C C4 0.1 uF C7 0.1 uF C14 0.1 uF C15 0.1 uF C22 0.1 uF C11 0.1 uF C20 0.1 uF C16 0.1 uF C2 0.1 uF C5 0.1 uF C25 0.1 uF C10 0.1 uF C6 0.1 uF C9 0.1 uF C18 0.1 uF C19 0.1 uF C VCC3 TP3 1 2 A B GND TP2 1 2 B A B B VCC3 GND TP1 1 2 A B C27 0.1 uF C23 0.1 uF C21 0.1 uF C17 0.1 uF C12 0.1 uF C29 0.1 uF C30 0.1 uF C31 0.1 uF GND VCC3 VCC3A L1 A C28 0.1 uF 5 NOTES: PCB Revision A 100 uH C26 0.1 uF + 4 C32 10 uF/25V Elecraft, Inc. Copyright (C) 2007 - 2010. L Johnson C33 0.1 uF Title 3 A K3 Aux DSP: Power Size A Document Number 2004051101 Date: Wednesday, June 16, 2010 2 Rev A0 Sheet of 5 1 5 P2 KRX3 1 2 3 4 5 SUB 6 BPFS D16 BAT54S C6 7R 1 .01 T1 K1 8 3-dB Splitter /SPLIT D1 64-05 C1 K1B .047 ANT 5 6 7 K1A 3 C3 .047 7R 2 1 3 5 7 2 4 6 8 10 12 C4 5 1 3 C5 .01 TBD R1 220 R3 24.9 L3 7T 100 R2 220 9 11 P1 C2 .047 RF Board MAIN 7T 4 L1 100 4 6 2 BPFS C7 .01 L2 100 D2 64-05 Elecraft SUBIN By Rev. W. Burdick B2 Module Date 9/18/08 Sht. 2 of 2 U2 78L05 C1 0.1 OUT IN GND MOSI3SB 2 4 6 8 10 12 14 1 3 5 7 9 11 13 7 8 R2 100 P2 LD_BPF_SB MISO3 SCK3SB R1 100 3 4 5 6 7 VCC 1A /4OE 1Y 4A /2OE 4Y 2A /3OE 2Y 3A GND 3Y 14 13 12 MOSI3S LD_IF_S 11 10 9 8 SCK3S U1 RX2_IF+ 2 /1OE RX2_IF- 1 HAGC2 KRX3 IFGAIN2 LD_IF_SB 74LCX125 12A LD_BPF_S P1 RF Board 1 2 3 4 5 6 9 10 11 12 Elecraft SUBOUT By Rev. W. Burdick B2 Module Date 8/18/08 Sht. 2 of 2 Band-Pass Filters K5A 470K 4 C71 24 8.2MHz TRAP L7 820 C126 4 39 3 P44E C120 470 P44C 1 2 C181 K8A 3 4 Aux. BPF 3 12SA 5SA 2 4 LD_BPF_SB 6 9 40 C180 40 2 P44A 20 C147 SCK3SB 3 5 MISO3S K9A CB Z1 C186 100 CF SUBOUT R9 100 8 10 12 14 CN 6 Z7 4 CP 9 11 13 100 RX2_IF+ CJ 7 RX2_IF- Z5 5 CK R8 20 CC 3 MISO3S 22 2 100 CE C154 39 7 Z9 CT /Q2 /Q5 /Q3 /Q4 /CLR RCK 14 8 C134 40 1 5SA 2 9 3 K6B 4 5 6 7 40 K8B VCC GND SIN SRCK /Q0 /Q7 /Q1 /Q6 /Q2 /Q5 /Q3 /Q4 /CLR RCK 1 12 11 10 9 16 K6 (15/17 m) K5 (20/30 m) K3 (40/60 m) K1 (80/160 m) K8 (10/12 m) K9 (6 m) C189 .01 K7 (17/10 m or 15/12 m) 13 K4 (60/20 or 40/30 m) 12 K2 (80 or 160 m) 11 K10 1 (Attn., SH. 2) 10 10 9 U2 TPIC6C595D 8 12SA SCK3SB 14 9 9 C52 .01 R51 TBD 15 SOUT /G BPF_IF2 8 .01 C240 C274 .01 .01 CG L1 0.25 BAV99 7 1 C57 .01 12SB C187 100 L2 0.25 Z2 Z4 CL Z6 CR Z8 /MAIN RF SEL MOSIBPF2_S LD_IF_SB IN CD R13 HAGC2 100 CV Z10 VIFGAIN2 CW 12SA C51 RF SENSE .047 12SC Q5 C63 2 BCV27 R12 470K BC807 IN CM CS RFC2 22 Q2 U5 78L05 C32 1µF R3 OUT GND U8 78L09 10K 1.8K C.O.R. D1 BAT54S 5SA OUT GND MOSI3SB CH K11 8 (Not on rev B PCB) 33 C139 5SC D2 BPF_IF K9B 20 C148 8 7 C188 220 1 10 13 SOUT /G 12SA LD_BPF_SB R4 CU /Q6 MOSIBPF1_S .047 /MISO3S C140 3.9 C128 L3 0.25 J64D CA 1 C60 100 Z3 /Q7 SCK3SB C61 470 L13 1.0 C138 33 3 R2 SCK3SB /Q0 /Q1 15 C223 2 LD_BPF_SB SRCK .01 9 C157 10/12 m 6 m 8 GND SIN 12SB TPIC6C595D 8 820 C184 40 L12 1.0 C141 3.9 6 7 (15/12) C185 4 1 L10 1.0 C182 2 C174 220 5 7 C155 (17/10) K7 4 K5B C152 120 40 40 4 BPF_RF 3 MOSI3SB VCC 16 C149 15/17 m L11 1.0 C129 L6 1.0 C144 2 40 C135 40 K6A 3 C183 20/30 m C136 2 C122 100 C142 5 1.0 2 (40/30) 40 C179 40 C118 2 L33 11.5 C218 11 120 3 40 C130 C124 1 9 C156 K3B 1000 22 U4 C90 R14 SA1 2 C123 100 RFC49 C236 C131 40 L8 4.5 (60/20) K4 5V = LINK NB1-2 .047 8 8 C119 1000 IN 5SA 4 7 100 8 K3A .047 L9 4.5 7 2 RF SENSE J92 AUX RF (W23) 40/60 m 4 7 40 R50 10K C153 56 40 2 6 40 3 C50 C117 5 56 GND 5 K1B C1 390 C86 150 V+ COM C146 9 3 5 C116 100 K11 C143 C133 7 4 2 2 (80) K2B C132 C125 3 /SPLIT 1 (160) 8 C17 100 9 9 K2A 4 BPF_IF2 3 (160) (80) C78 150 7 3 NO C164 CY .01 80/160 m 2 C163 CX .01 4 2 1 /NB1 (via W6) C190 2 K1A 8 C172 1500 /NB2 (via W5) C165 C173 1500 5SA C191 3 4.5 7 C111 5SA Z11 L4 L5 C75 4 5SC P89 L16 1.2 C160 6 3 5 U6 TS5A3166 1812? 3 4 C84 560 2 3 C177 90 1 2 C82 1300 L18 27 C93 560 1 C81 1300 C178 90 C108 C79 /12S_ON J64C SUBIN /12S_ON C65 10µF 9SA C42 1µF Appendix B Elecraft KRX3 Sub Receiver By Rev. W. Burdick B2 Date 8/18/08 Sht. 1 of 2 R65 1 4 3 2 1 C209 .047 PREBYP R61 9SA P45C P46C P47C 12SC FL5 15 RFC19 C13 P45B RFC21 P46A XF2 64-04 FL3 D16 RFC16 D13 C205 RFC17 R19 C10 C48 27 3 R26 S 100 .047 C49 D L37 27 2 RFC14 C7 150 RFC15 2 V3 1µF J309 P49A FL2 C2 BW2 FL1 D12 C23 15 RFC12 C27 22 RFC13 L39 2.8 FL1 R23 560 C41 .047 C5 R17 100 RFC12-RFC21 = 100 µH C6 C4 C4-C14 = .047 µF R16 620 SCK3SB 5SA LD_IF_SB PRE_ON PRE_OFF 2 3 4 5 6 7 8 9 10 Q8 Q9 Q7 Q10 Q6 DOUT SCK VBB GND DIN VDD /OE LOAD Q1 Q5 Q2 Q4 Q3 NC NC 17 16 15 MOSINB2 - 4 FL2 2 150 G3 R79 FL4 R86 4.7M 5 (not used) C196 .01 D29 G1 6 BAV99 R80 1 D32 BAV99 R85 470K C238 U3A HAGC2 FL3 RX2_IF+ 7 R41 33K C199 0.01 G2 5 D38 MOSI3SB - C213 12SD OUT IN GND D30 0.1 HAGC Det. TLV2462 9SA 12 U3B + 1 - 3 2 C197 .01 VIFGAIN2 FL5 11 .047 C252 + FL1 R81 14 13 7 R82 19 18 8 C255 20 U1B RP1 2.7K D40 1 + 6 C212 U11 5SB .047 4 7 0.1 BW1 BW3 P49B 5 R P 1 2.7K 1µF 0V = MAX GAIN, 3V = MIN C254 .047 RX2_IF- .01 8.230 MHz U10 A6810 1 R42 33K C200 0.01 6 4 6 - 150 1 2NDLO 22 8 + 2 C215 1µF C20 J82 I.F. Amp M2 M1 C249 12SD U1A LM833 C214 5 V+ R30 .047 C28 22 C8 R18 100 D11 1 0 10 L36 18 8 C18 Q1 G C47 X2 120 D14 1 TRAP 1 X1 2 1 12SC 100 2.7K 78L05 C285 2.8 4 P48B FL2 C24 15 4 R39 RP1 U9 SA612 C40 100 1 3 BW = 14 kHz T5 16:5 C30 100 L38 RFC27 100 D33 FL3 P48A RFC24 100 IF2 IF1 C29 22 C198 220µF C251 .047 C44 .047 R25 51 R7 1.8K C9 C39 .047 FL4 P47B P86B .047 2nd RX Mixer .047 64-04 D22 .047 3 1.2K C12 P86A C201 C43 9SB C36 22 9SA W4 R10 RFC25 22 9 10 11 12 J93 R75 390 78L09 0.1 8 6.2Ω U7 R29 D19 R21 100 P47A C25 15 .047 7 C203 * Not present on rev A PCB. C56 D21 RFC20 C11 150 C38 * 3.3µF 0.1 22 P46B RFC18 D15 3.3µF C208 6 C262 .01 R56 8.2Ω Q89E R60 C229 PRE_OFF.047 RFC8 100 C233 .047 C37 5 620 9SA PRE_ON OUT GND FL5 FL4 C26 15 C22 C14 R20 100 D18 8.2Ω R63 24 4 NE46134 R68 11 C258 3 Q9 J85 C257 1STLO RFC4 100 2 C204 .047 Q8 RFC5 9SB_1 C3 D20 XF1 IN 64-04 P45A * 620 1 W3 + 64-04 C21 .047 1.2K Crystal Filters D17 C202 RFC39 47 µH C211 .047 1.8K 2 L35 11.5 R64 R102 3 W2 5 2 4 Q4E 100 C19 .01 4 Blanker 1 1 18 C232 .047 3 100 µH R67 15 R74 R59 220 2 470 RFC37 Q3 2N7002 R1 100 7 4 BW2 BW3 BW1 2 .047 1 C237 .047 SCK3SB 3 R11 10K 12SA C195 .047 C228 NE46134 100 R6 FL3/4/5 BW 4 100 D3 64-05 Noise 12SA MOSINB2 MISO3S 100 10K 2 Q4 RFC42 RFC6 1 T6 J78 C16 .047 R66 15 Z12 1st Mixer 12SA LD_IF_SB 12SA 100 R5 R45 .01 470 C193 .047 470 R43 68 R37 D4 R69 4 6T C210 R62 W1 8 3 BPF_IF .047 C34 9 2 K10 3 18 Q89B Preamp -10 dB RFC41 Attn. C15 .047 C253 R78 R78-R82 = 100 Elecraft Appendix B KRX3 Sub Receiver By Rev. W. Burdick B2 Date 8/18/08 Sht. 2 of 2 C:\Projects\K144XV\Schematics\KXV144_8B.sch - Sheet2
