Icom IC 4088 diagrame

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1 P () 00 (M) MP0 (M) MP0 (M) MP (RF) P0 (M) MP0 () MP () MP0 (M) R0 (M) J0 (M) J0 (M) RF Unit MP () MP () MP () 0 (M) MP () MP () MP () J0 (M) MP0 (M) MP () MP () M00 (M) MP () MP () MP () MAIN Unit MP () MP () P () MP () MP () MP () MP () MP0 () MP () MP () MP () MP () MP () UNIT abbreviation (): HAI PART, (RF): RF UNIT, (M): MAIN UNIT -

2 TION MI-ONUTOR INFORMATION TRANITOR AN FT A R (ymbol: A) (ymbol: ) Q (ymbol: A) K (ymbol: K) (ymbol: R) R (ymbol: L) R (ymbol: ) (ymbol: A) O (ymbol: QO) R (ymbol: R) R (ymbol: R) 0 Y (ymbol: M) (ymbol: T) JR (ymbol: V) J Y (ymbol: VY) K (ymbol: K) K0A (ymbol: UW) TAZU (ymbol: ) TA U (ymbol: ) TTU (ymbol: 0) TYU (ymbol: ) TU (ymbol: ) HAT0R (ymbol: 0) UMZN (ymbol: Z) IO V (ymbol: TL) HV (ymbol: ) MA (ymbol: MP) MA0 (ymbol: ) MA (ymbol: A) MA (ymbol: ) 0-0 (ymbol: J) RV-0 (ymbol: ) -

3 TION 0 LOK IARAM ANTNNA 0X FI: FWM0 RAMI PF IF nd.lo:.mhz VO VO IF Q: VO FI: FL- XTAL PF st IF:.MHz st.mix Q: FI: NV PF, : MA0 RF Q: TX/RX W,, : MA0 : MA HPF TX/RX:.0 -.MHz I: TAFN UNKOK ATA, K, T I: T0FN PLL I LOOP FIL VO Q: 0, : V TX:.0 -.MHz RX:. -.0MHz UFF Q: 0 st.lo:. -.0MHz LO ATT W RIV Q:, : MA0 Q: : MA PWR Q: K0A P FIN FMT OUT /A X: R-A : HV Q: I(): H0FVM RF O. HIFT NOI T F MUT Q: VO Q: K MI MUT KU M00 I(): H0FVM Q: J RF /A MO VOL /A I(): H0FVM VO R Q0: A Q: 0/: MA Q: TU W J0 P V N Q0: TAZU Q0: TTU MAIN MO T TON-FIL MI- e-emphasis Pre-emphasis RMLR I- MIIN OUT Q: J MUT R0 RV- V I0: NJM00 VOL MUT Q: J0 I0: AK P00 PROM I00: R0 QL N HIFT V MIIN R-0P P H V-N V in J0 0: L-00Y L RV Q0: TAU PU I0 : PFAK-U X00: R- P V V Q0: A Q0: R URRNT 0, 0, 0: MA Q0: Q0: URRNT Q0: A V Q: TYU : MA I0: RNA RT V V/ ATT W 0: MA H 0: RV 0: MA HAR 0: 0-0 ATT Q: Q: TU 0 00 UP 0 0,0,: MA MATRIX TMP N ON TX Q0: UMZN 0: MA URRNT RX R POW W Q: HAT0R ATT-LT 0 ATTRY T OWN I0: RN0 0 OMMON MO 0 L TMP H RT V N TX POWR 00: L-0TAY PON RX ATA 0 -

4 TION VOLTA IARAM - MAIN UNIT 0 J00 AXK0 0 K MTX-00_P ATA V PLT N AT N AK MO N HIFT QLIN N P0 TT AT TRT AK PK PA TOUT TONT HIFT PLT K ATA PUV I00 R0FV-W A0 V A WP A L V A PUV Q0 TAU 0 P/ P/ P/ 0 P0/ P/0 P/ P/ P/ P/ P/ P/ P0/ AV 0 AVRF 0.0 R0 k 0 L-00Y--T 00 L-0TAY L 0 0. R0 0 k N OM OM OM OM0 V VL VL VL0 IA V I0 UPFAK-U P/AN P/AN P/AN P/AN P/AN P/AN/MPRF P0/AN0/MPIN0 AV 0 P/INTP/PT P/INTP/TO P/INTP/TI P/INTP0/TI0 P/MPTOUT0/T0 P/I/RX P/O/TX P0/K/AK P P 0 P P0 QLIN R TMP N QLIN PON HV 0 MO PWRW [MO] [ POWR] OWN UP 0 W R0. k R 0 k HV RXV 00 R00. k 0 R 0 k 0 P0/KR0 P/KR P/KR P/KR P/KR P/KR I XT XT V0 0 V0 X RT P P P00 P0 P0 P0 MIIN ON P [ OWN] [ UP] [ ] 0.00 R. k R 0 k 0.00 R 00 k PUV 0. MTX-I0 MTX-I H TXV POWR MIW R NT LH KT X00 R- 0 P R 0 k R0 M R0. k 00 P H 0 MA 0 MA MTX-00_P MTX-0_HIFT R 0 k :. R k R. k W P00 MA 0. R 00 k P0 PUV Q TYU MA :. 00 P R 0 k 0. R. k R0 0 k R 0 k R 0 k V PON P RT 0. I0 RNA OUT V V N Q0 0. I0 RN0 VOUT N N V R0 00 k R 00 k TXV R k R. k R 0 k R k R k W0 OMPN OMPP AV TPFO RF 0 TLINO TLIN RXTON TXTON INO IN TAN 0.0 RXV 0 :. 0 POWR R0 0 k R0. k 0 V OMPO TOUT TOUT TOUT XOUT XIN ATA LK T RTN V ANIN N AN 0 RXIN RXINO LIMINO LININ TXOUT LIMLV LIM MIN PFOUT R 0 k R0. M R 0 T:. R k R0 k R k 0 R M P :. R k 0 MA 00 0 MA P W00 0. R k 0. RX RXIN OUT 0 AV MO MOIN POUT O N P TXIN TXINO I0 AK P R 0 k 0 P Q0 UMZN :.0 0 P 0. R:. Q0 R R. k P R k R k R k P V R k R k 0 MA Q0 R. W0 R k R 00 k T:.0 0 P 00 P 0 MA R NT NH KT R. M Q0 A R 0. R k 0 P R0 00 k R. k 0.0 Q0 K 0 0. R k R 0 k R 0 k R k R 0. R 00 k R. k 0. Q0 TTU *: XT- T:.0 R k 0. R k I0 NJM00M H:. MO R 0. *: XT- T:.0 R:.0 Q0 TAZU 0. R 00 k R:. 0 P P Q XT-: 0. Q K R M R M R. k Q HAT0R Q TU R0 00 k 0 0 P R. k R 0. T:. R (P):.0 R (XT-):. V [P] Q J Y 0 P 0. 0 P R 0 k 0 P XT-:. P:.0 0 RV-0 0 MA R 00 k 0.00 R. Q Q R. k R 00 W0 MIIN 0 R M R00. k 0 P P 0. 0 MA R 0 0 P 0 P 0. R0 00 k R0 00 T:. R0. k 0 R0 00 Q TU *: at INT- T:. R0 k XT-:. P0 0 P R0 RV- 0 P 0.0 M P P00 R-0P-00 P0 J0 HJ0-0-0 MI XT.P J0 HJ-0-00 J0 0-0A-0KA.IN -

5 - RF UNIT 0 0 J AXK00 K MTX-00_P ATA V PL0T N AT N AK MO N HIFT QLIN N 0.00 R 0 k R. k 0X R N H R 0KT k R. k I TAFN () OUT FILIN 0 QUA FILOUT IFOUT RI IFIN N-T V N-R MIXOUT N OOUT MIXIN OIN 0 0 P P P FI FWM0 O I R 00 k R. k 0 P R 0 k R0 k I H0FVM N V I AO LK AO L AO V R N R k R:. R 0 R 00 k 0 P 0. R k R. k R0 NT NH KT 0.00 P R0 0 Q 0 I T0FN FIN V P N L K ATA T P N W XIN XOUT O V FIN P P MMZ0 R 0 k R k R 00 k R0 k R 0 k R k Q PLT ATA K F HIFT R:. 0.0 Q R 0.0 R. k 0.0 FI FL- W R. k X R-A. R k Q J R 0 P R0 0 R 0 k HV 0 P R 00 k R. k R M P R 0 k 0.00 W W :.0 P 0. R0. k 0. L 0 H R 0 L nh P P P 0 P R 0 R 0 R P R k 0 P P L nh P P R. k 0 P R Pa ANTNNA 0 P R 00 k L nh 0 P 0.0 L nh L nh P L nh L nh L0 0. H 0 L 0.00 nh L nh P P Q R P Q R0 k R k 0 P L. nh Q K0A L 0 H L 0 H 0 L. P nh L0 nh R R k Q R R MA 0 L nh R. k L nh R L. nh 0 P P L. H P P. P 0. P L nh J 0--0R-T Q 0 Y Q 0 Y R k P P P P Q0 P R 0 R 0 R k R k 0. P 0 MA V V L nh R k W 0 P P 0 P R 0 R 0 R k MA 0.00 R 0 0 P 0 P P W P R MA0. 0 P 0 P P 0 P 0 P 0 P 0 P 0 0 P 0.0 R. k Q R MA0 R L nh MA MA0 MA0 MA0 L. nh FI NV Q R V R R NT NH KT R:.00 R:. R:. T:.0 T: 0. R: 0. T:.0 T:.0 :. :.0 :. :.0 :.0 PO : OMMON T: TX R: RX