Home

IC-F21/F22 series Service Manual

1. T5V VCO5V 8 k C48 W4 0 001 1 010 7 T5V T5V L2 L1 25 5085 Y VCO5V C260 C34 14nH 14nH ANT P dos H o T E Y icon im EP3 T BB C35 w14 L3 J7 F22SR only 10k 47P 47P 0 82 H only C61 C60 R22 d d Lok L30 11 47 P 0 001 220 2 0 30 0 9 C5 C3 O 21 C20 C18 0 30 0 9 9TR R1 SC5085 Y C40 C37 0 01 T wa 0001 47 C24 B 4P XA K al 470 P 0 001 R17 C30 39 P except F22SR L5 C12 LA 1SV307 27 nH d R20 110 d 100 R12 118 T 0 001 33 P F22SR only 0 4 0 9 2TL 0 001 14 nH C7 4k 12k u 1655 0 001 c39 12V D3 U 91 C17 L1 R3 5 i 77 2 5 2SK2974 36 P except F22SR Sy a kada i amp T u K C38 10 P 5 Rio MP5 Gis 1 2 oy lt 4 5 lt 4 06 W I 5P 4P Q3 47k 12 P except F22SR IYA 1 RB706F 40 17V S LM 25 51070 2565107 O 05 MATI pe 25 5107 2SC3585 R44 2 R6 C25 C23 25C5107 4 7k 33k 0 001 20P 0v 10 P except F22SR C15 R4 R27 6 P F22SR only 0 001 1k 10k OV C27 C251 TRE T T 0 001 R5V R5V S5V 551 RSSI po RSSI 014 R77 R69 ON 0 6 V o di d 47 i 1 cn i O33 re DTA144EU C126 R80 C125 R78 470k 180k coy Tr gr m We 408 uL TP cos 1k 1 0 H a 470 C119 ar 46 5 C102 L20 L19 0 01 T Q16 22 P 0 5 P HVU350B 1 5P 14 nH 14 nH D R85 015 012 C132 3SK272 C115
2. 4 7 Enter to sweep Enter to start NOTE The above values for settings are example only Each transceiver has its own specific values for each setting 1 Transceiver s connection state DTCS wave balance 2 Reload adjustment data 9 FM deviation 8 Receive sensitivity measurement Squelch level 4 Connected DC voltage 41 Receive sensitivity automatically 5 PLL lock voltage 42 Receive sensitivity manually 6 Operating channel select 43 Reference frequency 7 RF output power Adjustment items CABLE SP 3 conductor 3 5 d mm plug to IC F4GT GS SP jack eq el a cable 478 CLONE e CONNECTION 0 1 pV to 32 mV 127 dBm to 17 dBm CAUTION DO NOT transmit while an SSG is connected to the antenna connector FM Attenuator deviation meter 40 dB or 50 dB RF power meter 0 1 10 W 50 Frequency counter NOTE In case of IC F22SR instead of connecting the Standard Signal Generator RF power meter etc to the antenna connector connect to the J7 as shown below DC POWER CABLE CONNECTIONS SUPPLY Battery type detector LI E NOTE When you adjust the output power high power the battery type detector must be con nected to GND see illustration at above Ohterwise the transceiver does not transmit high power the output power will be low to MIC Aud
3. C1608 JB 1H 473K T A C1608 CH 1H 470J T A C1608 JB 1H 333K T A S ELECTROLYTIC ECEV1EA4R7SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1E 104K T N C1608 JB 1H 103K T A C1608 JB 1E 104K T N C1608 JB 1H 682K T A C1608 JB 1H 103K T A C1608 JB 1H 393K T A C1608 JB 1H 473K T A C1608 JB 1E 104K T N C1608 JB 1H 821K T A C1608 JB 1H 821 F21 22188 F21GM F21S 8 F22 F22S F22SR F21BR F21GMI 22258 S Surface mount 0 F21 F21S 222 F22S F21BR F21S 2225 E F21GM 221 222 F22SR 6 4 MAIN UNIT ORDER E EJ ces 4030008880 4030006860 4030006860 4030006860 4030007090 4030008470 4030008770 4030007160 4030009630 4030007110 4030011600 4030011600 4030017480 4030006860 4030007130 4030007000 4030006860 4030011600 4030007090 4030006900 4030006860 4030007090 6910013720 6910013730 6510021900 6450001680 6450001690 6510022690 6510022370 7700002160 2230001060 2230001060 2230001060 7030003860 7030003860 7030003860 7030003860 7030003860 7030003860 0910053694 0910054182 6910013370 6910013370 6910013370 6910013370 6910013370 6910013370 6910013370 3310002940 S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S
4. 031 R220 i BP Spa 0 001 T 4 3225 H B6 CUM F1 084 D19 WV 25042150 I 10 L14 1 4 R13 R11 19055 0 001 0 001 47 220 10 Bi 22 HVC362 C253 9 P pen 100 P 2 C59 m R19 R16 C35 W14 TAH J7 F22SR only t T Nr D21 R45 HVU350B R22 100 10k 37V T P 47V E I I only O MA2S111 C83 R46 10k 95 220 3 5 V OV L30 m 3 3 47 P 0 001 C21 C20 C18 0 30 0 9 9TR C5 col O 52 47 LVIN R244 22 C73 C40 C37 0 01 T Wo 0 001 47 24 D1 4P 7P 82k 47P h gt L11 470 P 0 001 R17 C30 39 P except F22SR L5 C12 L4 18V307 117 C69 C67 C66 27 nH T R20 poe 100 812 18 I 0 001 33 P F22SR only 0 4 0 9 2TL 0 001 14 nH C7 Fr 4 7 H 0 3P 1 5P a C44 47k n 13V 2 V 12k 12 nH i 0 001 i 12 P c39 12V D3 91 C17 R42 R40 C68 l 11 nH 5p MA77 36 P na 77 except 72258 1k 39k 68k 3P t 10 T a a K a 2SK2974 15k C75 C74 Y C42 33 77 Z D6 R34 R240 K Y 1 C38 R10 MP5 C13 D2 C76 0 1 T 9 001 D7 70 Q7 A 12 D4 Q3 0 047 27 MA368 120k ek d V lt lt lt lt 06 47k 12 P except F22SR 4 RB706F 40 NANA NA AA i 17V u j n 25051070 2SC51070 95 gt SIR 52 I 4 R6 C25 C23 24V 14 25 5107 47k De DON TUR OV TOPexcepIFZ2SR 015 Ba LOCK45V D20 R39 R38 C72 R37 C71 R36 R35 E 9 T 6 P F22SR only 1 1k UNLOCK 0 5 V 25111 4 1
5. F22S F21BR 2215 F22S F21GMI F21 222 F22SR 6 2 MAIN UNIT ORDER ORDER E E E E cene 7030003680 7030003680 7030003680 7030003680 7410000950 7410000950 7410000950 7510001280 7030003940 7030003940 7030003940 7030003200 7030003800 7030003570 7030003570 7030003570 7030003560 7030003560 7410000950 7410000950 7030003400 7030003760 7030003760 7030003760 7030003560 7030003480 7030003560 7030003520 7030003560 7030003520 7030003620 7030003600 7030003600 7030003650 7030003710 7030003640 7030003640 7030003640 7030003640 7030003610 7030003700 7030003400 7030003760 7030003680 7030003640 7030003640 7030003590 7030003720 7030003660 7030003690 7030003600 7030003600 7030003600 7030003640 7410000770 7410000950 7030003680 7030003460 7030003750 7030003710 7030003670 7030003630 7030003680 7030003680 7030003690 7030003680 7030003580 7030003400 7030003440 7030003600 7030003600 7030003640 7030003680 7030003720 7030003480 7030003680 7030003660 7030003660 7030003660 7030003660 7030003660 7030003710 S RESISTOR S RESISTOR S RESISTOR S RESISTOR S ARRAY S ARRAY S ARRAY ERJ3GEYJ 104 V 100 ERJ3GEYJ 104 V 100 ERJ3GEYJ 104 V 100 ERJ3GEYJ 104 V 100 ko EXB V8V 102JV EXB V8V 102JV EXB V8V 102JV S THERMISTOR NTCCM20124AG473J T S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR
6. T lt 100 k From to VCC VCG TT Ge s C 5 S5V S5V S5V S5V UNITS 5V 5V 019 D Saar R133 ON IC4 TA7368F 3 4 V VOLOUT 5 5V 12k ICBB NJM13403V 24V IC6 BU4066BCFV 2880828 2 4 470 eum 0 0086 IC5C NJM13403V C176 R119 C174 180 P C162 161 160 0 022 i 10 C183 C182 C181 0 0033 150 k AP an C261 470P 0 001 47 4 8V 0 1 47 PTT OFF OV Q22 UN911H 9 R111 R110 PTT lt R140 Be 18k 3 3k 109 022 C177 R120 ICSD Tubes C163 777 z lt 121 2 2 39k NJM13403V R114 100 olol C189 C188 8 C175 0 0056 10k P R238 gt gt gt 2 470 P 10 01 J 100 k XP6501 AB C166 65 09164 R112 C172 C171 R107 C170 R106 C169 C168 10 VOLIN VOLIN BEER PFET 22k 47 z 0 22 1k 0 1 33k 68 0 22 RET VOLOUT VOLOUT VOLOUT C248 0 1 VOLOUT lt VOLOUT AFOUT AFOUT C j C AFOUT WIDE 48V NAR OV BATV m 4 9 V 49V T aza2sB1132R O O comezsearpesoc e ET NG IC10 N u or R151 NT NJM2870 ji Sen NTCCM20124AG473JCT cigi CHASSIS UNIT VOUT8 d 0 1 TEMP R212 5 1 ag A VOUT7 us ne 15k Wi 2SA1577 R152 100 k gt ea R173 SA1577Q GN IC8 S 80942ANMP DD6 100 k D only 2 1577 10k 025 I 10 15V P MEN OPC 963 en XP6501 AB Q23 X3 CR 702 0
7. O 26 5 dBuV m at threshold EIA 152 C 204D or TIA 603 is typical value EIA 152 C 204D only With CCITT filter F21BR F21GM F22SR All stated specifications are subject to change without notice or obligation RECEIVER je SECTION 2 INSIDE VIEWS MAIN UNIT TOP VIEW Power amplifier Q1 25 2974 Pre drive Q2 25K2973 YGR amplifier E 2503585 j Q4 2SC5107 O TX RX switch D3 D4 MA77 VCO circuit PLL reference oscillator X1 CR 671A Low pass filter circuit IC12 16 NJM12904V Expander IC IC15 BU4094BCFV BOTTOM VIEW Antenna switching circuit 151307 D9 010 77 RF amplifier 015 35 293 IC2 TA75S01F amplifier IC4 TA7368F ie switch J IC6 BU4066BCFV wwe converter IC9 M62363FP 650C Crystal filter FIT FL 335 FM IF IC IC3 TA31136FN 1st mixer Q19 2581132 R a I AT PLL IC MB15A02PFV 1 9 7 HD6433664A24FP F21 F21S F21BR F21GM F22 F22S HD64F3664FP F22SR EEPROM IC11 58 2416 mu e SECTION3 DISASSEMBLY INSTRUCTIONS REMOVING THE CHASSIS D Unscrew 1 nut and remove 2 knobs B Unscrew 2 screws D 3 Unscrew 2 screws H to separate the Jack panel and the Front panel Take off the chassis in the direction of the arrow
8. e SERVICE MANUAL UHF TRANSCEIVERS IC F 21 series IC F ee series Icom Inc INTRODUCTION This service manual describes the latest service information for the IC F21 IC F21S IC F21BR IC F21GM IC F22 IC F22S IC F22SR at the time of publication To upgrade quality all electrical or mechanical parts and internal circuits are subject to change without notice or oblig ation DANGER NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 8 6 V Such a connection could cause a fire hazard and or electric shock DO NOT expose the transceiver to rain snow or any liquids DO NOT reverse the polarities of the power supply when con necting the transceiver DO NOT apply an RF signal of more than 20 dBm 100mW to the antenna connector This could damage the transceiv er s front end ORDERING PARTS Be sure to include the following four points when ordering replacement parts 1 10 digit order numbers 2 Component part number and name 3 Equipment model name and unit name 4 Quantity required 1130007020 S C TC7S66FU IC F21 MAINUNIT 1 piece IC F22 IC F22SR IC F22S 8810004860 Screw PHM2x6ZK IC F21 Chassis 10 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES Make sure a problem is internal before disassembling the transceiver DO NOT open the transceiver until the transceiver is disconnected from its power sou
9. ERJ3GEYJ 104 V 100 ka ERJ3GEYJ 104 V 100 ERJ3GEYJ 104 V 100 ka ERJ3GEYJ 823 V 82 ERJ3GEYJ 102 V 1 ERJ3GEYJ 332 V 3 3 102 V 1 ERJ3GEYJ 220 V 22 Q ERJ3GEYJ 101 V 100 Q C1608 CH 1H 010B T A C1608 CH 1H 070D T A C1608 CH 1H 040B T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 120J T A only except F22SR C1608 CH 1H 180J T A F22SR only C1608 CH 1H 100D T A except F22SR C1608 CH 1H 060B T A F22SR only C1608 JB 1H 102K T A C1608 CH 1H 360J T A except F22SR C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 JB 1H 103K T A C1608 CH 1H 200J T A C1608 CH 1H 330J T A F22SR only C1608 CH 1H 390J T A except F22SR C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 471K T A C1608 CH 1H 050B T A C1608 CH 1H 120J T A C1608 JB 1H 102K T A C1608 JB 1H 471K T A C1608 CH 1H 100D T A C1608 CH 1H 470J T A C1608 CH 1H 470J T A C1608 CH 1H 100D T A C1608 CH 1H 040B T A C1608 JB 1H 102K T A C1608 CH 1H 050B T A C1608 CH 1H 050B T A C1608 JB 1H 471K T A C1608 CH 1H 120J T A C1608 CH 1H 120J T A C1608 JB 1H 471K T A C1608 CH 1H 030B T A C1608 CH 1H 470J T A C1608 JB 1H 471K T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 CH 1H 0R5B T A C1608 CH 1H 070D T A C1608 CH 1H 080D T A C1608 CH 1H 040B T A C1608 CH 1H 040B T A ECR KNO00
10. R3 560 RX SQLOPEN TX 24V SW B UNIT EMERGENCY VERSION 51 I O TP76N00N 15F 10KA 2251 7 Q1 4216 CBIO 2 CBIO VOLOUT VOLIN SQL OPEN 4 8 V VCC TX 0V RLED TX A 48V TLED RX SQLOPEN 0 GND CBIO VOLOUT VOLIN RX SQL OPEN 4 8 V OV TLED TX 4 8 V RX SQLOPEN OV RX SQL OPEN 0 V TX 4 1 V RX SQL OPEN 2 1 V RX SQL OPEN 4 1 V TX OV R2 330 R3 560 RX SQL OPEN 2 1 V TX OV OV Icom Inc 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan Phone 06 6793 5302 Fax 06 6793 0013 URL http www icom co jp world index html Icom America Inc Corporate Headquarters 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 425 454 8155 Fax 425 454 1509 URL http www icomamerica com lt Customer Service gt Phone 425 454 7619 Icom Canada Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 604 952 4266 Fax 604 952 0090 URL http www icomcanada com Icom Australia Pty Ltd A B N 88 006 092 575 290 294 Albert Street Brunswick Victoria 3056 Australia Phone 03 9387 0666 Fax 03 9387 0022 URL http www icom net au Icom New Zealand 146A Harris Road East Tamaki Auckland New Zealand Phone 09 274 4062 Fax 09 274 4708 URL http www icom co nz Icom Europe GmbH Communication Equipment Himmelgeister Str 100 D 40225 Dusseldorf Germ
11. S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1E 104K T N C1608 CH 1H 181J T A C1608 JB 1H 562K T A C1608 JB 1H 332K T A ECST1AY225R C1608 JB 1H 103K T A C2012 JF 1C 105Z T A C1608 JB 1H 222K T A C1608 JB 1H 473K T A C1608 JB 1H 473K T A C1608 JB 1E 104K T N C1608 CH 1H 181J T A C1608 JB 1E 104K T N C1608 JB 1H 562K T A C1608 JB 1H 223K T A S ELECTROLYTIC ECEV1CA100SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1H 471K T A C1608 JF 1H 104Z T A C1608 JF 1H 104Z T A C1608 JF 1H 104Z T A C1608 CH 1H 220J T A C1608 CH 1H 150J T A C1608 CH 1H 680J T A C1608 JB 1H 471K T A S ELECTROLYTIC ECEVOJA220SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM C1608 JF 1H 104Z T A C1608 JB 1H 102K T A C1608 JB 1H 273K T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 JB 1H 103K T A C1608 JB 1H 103K T A C1608 JF 1H 104Z T A ECSTOJY106R S ELECTROLYTIC ECEV1CA100SR S CERAMIC S CERAMIC C1608 JB 1H 103K T A C1608 JF 1H 104Z T A S ELECTROLYTIC ECEVOJA220SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1H 103K T A C1608 JB 1H 103K T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 JB 1H 103K T A C1608 JB 1H 822K T A C1608 JB 1E 104K T N C1608 JB 1H 821
12. pt AFOUT 74 AFOUT WIDE 48V NAR OV SM OV m comeasesresoc a in IC10 R165 48y 1 24 DET EATR nn NJM2870 1 e Ej CHASSIS um 222 Rie alas 2SA1577 025 T a a OPC 963 XP6501 AB Q23 R174 47k DTA144 EU MC1 VOUT4 VOUT5 13 VIN4 VIN5 C204 0 01 10 C203 4 ME 55 5C On lt BDET SENC3 SENC2 9 SENC1 SENCO 5C 02 a lt ez ET lt A J N ooo nl lt CDEC oO 0 01 AN PTT gt S5V S5V 2 a rt J4 EXT MIC R210 R216 R217 R218 R219 NJM13403V 120 22k 47 k 100 k 220 k 5 D17 T I 4P transmitting T RB706F 40 245 3 V P P R198 T T C258 0 0082 22 k 3 2 a 7 2 1 7 6 2 gt 6 ps 7 R223 R224 4 R225 R226 R190 5 NJM12904V 0242 C244 IC16A C246 IC12A 0 7 V R191 0 0027 180 P NJM12904V 68 P L C229 NJM12904V R194 0225 47k 030 XP1213 STOSS code T 0 01 68 41 211 3 C231 0 039 5 NG J 1 DUSE 12 1 21GM and F22SR 21 F22 and F22SR
13. 6 5 SECTION 7 MECHANICAL PARTS AND DISASSEMBLY CHASSIS PARTS MAIN UNIT ODER NO DESCRIPTION REF NO ODER NO DESCRIPTION 2510001100 Speaker 03600601 MP1 8510013000 2336 VCO case 8210017710 8930054680 8930054690 8210017730 8930054881 8010018501 8930054710 8930054720 8930042350 8930050840 8830001550 8830001570 8830001550 8950005320 8610010910 8610010920 8810004860 8810000100 8810009560 8930053680 8210017090 8930052840 8810009510 8930043760 8950004671 8830001250 8930055110 8810009510 8810009180 2458 front panel 2458 release button 2458 lens 2458 jack panel 2458 plus terminal 1 2458 chassis 1 2458 A main seal 2458 B main seal 1922 mic sheet 2251 minus terminal Nut J Nut K Nut J 2337 contact Knob N 281 Knob N 282 Screw PHM2x6ZK Screw PH M 2 x4 ZK Screw B0 M 2 x 6 ZK Spring AG 2337 terminal holder 2337 T rubber BO M 2 x 4 NI ZU BT 1923 Mic seal ANT connector 101A ANT connector 101 nut 2458 side plate Screw BO M 2 x 4 NI ZU BT Screw M 2 x 5 NI ZU BT except F22SH only NB o o o o F21 F21GMI 222 and F22SR B F21S F21BR 2225 F21 F21S F22 and F22S F21BR F21GM and 22258 F21BR F21GM and F21S For Screw abbreviations USA version BO BT Self tapping PH Pan he
14. BP DTC144 TU UN911 H XP1213 XP1214 XP4216 Symbol 06 Symbol 6P Symbol 9L Symbol 9H Symbol 8U XP6501 AB Symbol 5N E1 1 2 1 B2 2 e DIODES 1SV307 HVU350 B MA2S111 MA368 MA77 Symbol TX Symbol 4 Symbol A Symbol 6L Symbol 4B RB706F 40 HVC362 Symbol 3 Symbol V2 SECTION 9 BOARD LAYOUTS 9 1 IC F22 F22S F22SR MAIN UNIT TOP VIEW AR Baka 18 N LO OL mtm N s R188 oc 2 E IC16 ed C228 8198 C226 tO E 8145 gt lt 12 2 NII e 17 v LO R151 J6 gt EY LO C40 L10 T EL R22 R23 R25 R51 21 a v E A e m LO 079 L13 c Q T lt Rm C x 2 C88 C192 05 mw 201 C70 R153 H 0205 C259 BE 62 co x GE Be 0 C170 JE P R120 R114 5v RE SNE C143 7 s 6145 9 C33 LO co cc gt R13 2 o R14 R221 9 ER I 18 disp oc Jig 71 gt CN BE N O 1 102 J e 3 M Zia 0 J3 CN to the speaker oc 31 LO 175 fo fol o 8116 232 E
15. Microsoft Corporation in the U S A and other countries Screen shots produced with permission from Microsoft Corporation All other products or brands are registered trademarks or trademarks of their respective holders SCREEN DISPLAY EXAMPLE CS F21 ADJ Rev 1 0 IED File Option COM 1 OPEN Connect Reload F5 Disp para gt TEMPS 190 32 23 LVIN 98 62h 1 92 V SD 0 00h 0 00 REMOT 14 0 27 V BDET 255 FFh 5 00 45 SQL Lev 150 96h 54 255 HH ggg BE HH HH HH HH Hg 132 92 50 85 BPFALL Enter to sweep BPFT1 23 Enter to sweep BPF T2 22 Enter to sweep 9 Enter to sweep
16. Q17 NOIS signal to the CPU pin 53 16 RSSI signal to the CPU pin 59 The applied signals are amplified at the power ampli fier circuit IC4 pin 4 to obtain the specified audio level The amplified AF signals output from pin 10 as AFOUT signal are applied to the internal speaker SP1 as the SP signal via the SP jack when no plug is connected to the jack 4 1 6 SQUELCH CIRCUIT A squelch circuit cuts out AF signals when no RF signals are received By detecting noise components in the AF signals the squelch switches the AF mute switch A portion of the AF signals from the FM IF IC IC3 pin 9 as DET signal are applied to the D A convertor IC IC9 pin 24 The signals from the D A convertor IC9 pin 23 as SQLIN signals are applied to the active filter section 103 pin 8 where noise components are amplified and detected with an internal noise detector The active filter section amplifies noise components The fil tered signals are rectified at the noise detector section and converted into NOIS pulse type signals at the noise com parator section The NOIS signal output from IC3 pin 13 and is applied to the CPU IC7 pin 53 The CPU detects the receiving signal strength from the number of the pulses and outputs EXST SO SCK sig nals The signals are applied to the expander IC IC 15 pins 1 2 3 and then outputs RMUT signal from pin 4 This signal c
17. S RESISTOR S ARRAY S ARRAY S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S ARRAY S ARRAY S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR ERJ3GEYF 104 V 100 kQ ERJ3GEYF 104 V 100 kQ ERJ3GEYF 104 V 100 kQ ERJ3GEYJ 100 V 10 ERJ3GEYJ 105 V 1 M9 ERJ3GEYJ 123 V 12 ERJ3GEYJ 123 V 12 ERJ3GEYJ 123 V 12 ERJ3GEYJ 103 V 10 ERJ3GEYJ 103 V EXB V8V 102JV EXB V8V 102JV ERJ3GEYJ 471 V ERJ3GEYJ 474 V ERJ3GEYJ 474 V ERJ3GEYJ 474 V ERJ3GEYJ 103 V ERJ3GEYJ 222 V 103 V ERJ3GEYJ 472 V ERJ3GEYJ 103 V ERJ3GEYJ 472 V ERJ3GEYJ 333 V ERJ3GEYJ 223 V ERJ3GEYJ 223 V ERJ3GEYJ 563 V ERJ3GEYJ 184 V ERJ3GEYJ 473 V ERJ3GEYJ 473 V ERJ3GEYJ 473 V ERJ3GEYJ 473 V ERJ3GEYJ 273 V ERJ3GEYJ 154 V ERJ3GEYJ 471 V ERJ3GEYJ 474 V ERJ3GEYJ 104 V ERJ3GEYJ 473 V ERJ3GEYJ 473 V ERJ3GEYJ 183 V ERJ3GEYJ
18. swtich VOL control Common 5 V converted from the VCC line by the 5 regulator circuit 1010 The output voltage is applied to the CPU IC7 reset circuit IC8 and etc 5 V for transmitter circuits regulated by the T5 regulator circuit Q27 R5V 5 V for receiver circuits regulated by the R5 reg ulator circuit 026 Common 5 converted from the line by the S5 regulator circuit Q24 Q19 The same voltage as the line for the ana log swtich IC6 buffer amplifier Q13 etc The same voltage as the 5V line for the TX VCOS5V VCO Q11 RX VCO 010 and buffer amplifiers Q5 Q7 Input port for RESET signal 13 Outputs single tone encode signal Outputs CTCSS DTCS data signal Outputs serial clock signal to the PLL IC IC1 EEPROM IC 11 etc 29 Outputs data signal to the PLL IC IC1 and D A convertor IC9 30 Outputs beep audio signal port for strobe signal from to PLL 36 PLST IC IC9 Outputs strobe signal to the D A con vertor 109 on DAST Input port for the initial version sig nal Outputs strobe signal for the expander 98 EAST iG 115 39 oTT Input port for PTT swtich signal High While PTT switch is pushed 40 Outputs TX mute control signal High While transmitting Outputs BUSY LED control signal 1 RLED High While receiving Outputs TX LED control signal LED high While transmitting Outputs c
19. wave DTCS BAL 466 050 MHz antenna connector through an form 465 138 MHz attenuator 446 00625 MHz 22 e High Low switch Low1 No audio applied to the MIC jack e code 007 Ln Transmitting F21 F21S F22 and F22S F21BR F21GM F22SR In case of IC F22SR instead of the antenna connector connect to the J7 as shown page 5 3 SOFTWARE ADJUSTMENT continued Select an operation using 1 4 keys then set specified value using lt gt keys on the connected computer keyboard MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION Operating frequency Top Connect a SINAD meter with Minimum distortion 470 000 MHz panel 8 load to the SP jack 469 550 MHz 467 725 MHz 446 09375 MHz Channel spacing Narrow Connect a standard signal generator to the antenna connector and set as Frequency 470 000 MHz 4 469 550 MHz 467 725 MHz 446 09375 MHz D Level 10 uV 87 dBm Modulation OFF Deviation 1 75 kHz e Receiving CONVENIENT The BPF T1 BPF T4 can be adjusted automatically D 1 Set the cursol to BPF ALL on the adjustment program and then push ENTER key D 2 The connected PC tunes BPF T1 BPF T4 to peak levels or 2 1 Set the cursol to one of BPF T1 T2 or T4 as desired 2 2 Push ENTER key to start tuning 2 3 Repeat 2 1 and 2 2 to perform additional BPF tuning SQUELCH 1 Operating
20. when Windows is running 2 Insert the cloning software CD ROM into the appropriate CD ROM drive 3 Select Run from the Start menu 4 Type the setup program name using the full path name then push the Enter key For example D setup 5 Follow the prompts 6 Program group CS F21 appears in the Programs folder of the Start menu Audio generator Frequency range 300 3000 Hz Output level 1 500 mV Power attenuation 40 or 50 dB A Capacity 10 W or more Standard signal 22 generator SSG utput leve 0 1 uV 32 m 127 to 17 dBm DC voltmeter Input impedance 50 kQ V DC or better Oscilloscope Frequency range DC 20 MHz P Measuring range 0 01 20 V Digital multimeter Input impedance 10 MQ V DC or better AC millivoltmeter Measuring range 10 mV 10 V STARTING SOFTWARE ADJUSTMENT Connect the transceiver and PC with the optional OPC 478 and the JIG cable 2 Boot up Windows and turn the transceiver power ON 3 Click the program group CS F21 ADJ in the Programs folder of the Start menu then CS 21G ADJ s window is appeared 4 Click Connect on the CS F21 s window then appears the transceiver s up to date condition 5 Set or modify adjustment data as desired IBM is a registered trademark of International Bussiness Machines Corporation in the U S A and other countries Microsoft and Windows are registered trademarks of
21. 00 22k 0007 00 S PT gt DEV 251 5 5V T 0 001 R5V R5V R5V R5V R5V 0 4 C92 ME SSV SEV 55 en 4 6 V S5V E only only only 0 1 T R96 OV 12k 3 5 V C150 C148 R95 RSSI RSSI RSSI 4 150 A EN ru Q14 C153 R83 R77 R69 lt 144 only I 0 01 R97 T 100 95 pu xd 111 lt 033 R228 R227 esa c149 127 IC3 TA31136FN 2 9V C130 Ben 129 R78 T des R229 26 1829 470 180k K 56 P 7P T 0 82 H OSCOUT Gi 012 k 1 0 H 119 bus diy 0001 R64 018 C102 L20 119 0 01 T SW A UNIT C152 Q18 ALFYM450F k 2 TOO FL 335 05 T MA2S111 15P 14 nH 14 nH 10 m 016 I 25C4116 GR ee 2 C140 120 R85 OV D12 gt gt l z gt 120P R88 C132 1 35 272 OV 3 1 V C106 HVU350B 9 C154 H1 a 180 0 001 10V 3P 8P 20V 3P R60 sam a NIN 7 2 R86 R82 L25 DK Tomi C10SL 100 C96 R54 I 4 7k 8P 1k 10k 59 C158 C157 C156 R100 8 MES za 017 Is T M T T 3 pP R70 013 n T T R6 T OK 01 T 10 001 0 001 0 001 R98 2 4215 C128 220 k C116 HVU350B 220k 010 C100 D9 C99 22k 7 127 122 1 c110 C109 R68 TA75S01F R99 47k a 47 P 5P 6 C114 47 P 0 001 330 MA77 8 77 ud Soupe d 6 001 7 2 7k 20 P real a 10k Ok Date 10k a 0 R239 C155 0 1 0 001 5 10k 47 P u in 520 P i m 904 2 9 x nn
22. 003320 7030003640 7030003260 7030003360 7030003660 7030003320 7030003380 7030003660 7030003560 7030003490 7030003500 7030003380 7030003500 7030003500 7030003360 7030003690 7030003680 7030003590 7030003680 7030003600 7030003680 7030003540 7030003510 7030003440 7030003640 7030003440 7030003560 7030003450 7030003280 7030003670 7030003640 7030003650 7030003640 7410000950 7030003280 7030003560 7030003480 7030003560 S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S ARRAY S RESISTOR S RESISTOR S RESISTOR S RESISTOR 0 30 0 9 9TR 823 V 82 ERJ3GEYJ 101 V 100 Q ERJ3GEYJ 153 V 15 ERJ3GEYJ 102 V 1 ERJ3GEYJ 100 V 10 Q ERJ3GEYJ 470 V 47 Q ERJ3GEYJ
23. 030006860 4030007020 4030007040 4030007010 4030011770 4030006860 4030008750 4030007090 4030006860 4030006900 4030009990 4030007070 4030007080 4030006860 4030006860 4030006850 4030009920 4030007020 4030006860 4030006850 4030007010 4030007090 4030007090 4030007010 4030009910 4030006860 4030009920 4030009920 4030006850 4030007020 4030007020 4030006850 4030009530 4030007090 4030006850 4030007090 4030006860 4030009500 4030006980 4030006990 4030009910 4030009910 4540000040 4030006980 4550006450 4030007090 4510004630 4030007090 4030006860 4030007090 4030009500 4030009920 S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TRIMMER S CERAMIC S TANTALUM S CERAMIC ERJ3GEYJ 474 V 470 ERJ3GEYJ 182 V 1 8 ERJ3GEYJ 154 V 150 ERJ3GEYJ 104 V 100 ka
24. 06980 4030009910 4030007100 S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TRIMMER S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM S TANTALUM S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 CH 1H 100D T A C1608 CH 1H 050B T A C1608 CH 1H 1R5B T A C1608 CH 1H OR3B T A ECR KNO006 A61X C1608 CH 1H 050B T A C1608 JB 1H 102K T A C2012 JB 1A 105M T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A ECST1VY104R ECST1EY105R C1608 JB 1H 473K T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 CH 1H 101J T A C1608 JF 1H 104Z T A C1608 CH 1H 101J T A C1608 JB 1H 102K T A S ELECTROLYTIC ECEV1HA2R2SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 JB 1E 104K T N C1608 JB 1H 102K T A C1608 CH 1H 060B T A C
25. 090 4030011600 4030007160 4030008770 4030008650 45500061 70 4030006900 4030008680 4030006870 4030008920 4030008920 4030011600 4030007160 4030011600 4030008770 4030008880 4510004630 4030006850 4030008630 4030008630 4030008630 4030007050 4030007030 4030007110 4030006850 4510005430 4030008630 4030006860 4030008890 4030007090 4030006860 4030006900 4030006900 4030008630 4550006200 4510004630 4030006900 4030008630 4510005430 4030006900 4030006900 4030006860 4030007090 4030006860 4030006900 4030009630 4030011600 4030009490 4030008920 4030007090 4030008900 4510004650 4030011600 4030006900 4030011600 4030009880 4030006900 4030008910 4030008920 4030011600 4030009490 4030009490 S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 CH 1H 100D T A C1608 JB 1H 103K T A C1608 CH 1H 221J T A C1608 CH 1H 221J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A S ELECTROLYTIC ECEV1CA470SP S CERAMIC S CERAMIC C1608 JB 1H 102K T A C1608 JB 1H 471K T A S ELECTROLYTIC EEVFCOJ101P S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC C1608 JB 1H 473K T A C1608 CH 1H 470J T A ECST1AY106R C1608 JB 1H 473K T A C1608 JF 1C 224Z T A ECST1CY685R C1608 JF 1H 104Z T A C1608 JF 1C 224Z T A S ELECTROLYTIC ECEVOGA470SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC
26. 103 V 10 MAIN UNIT 7030003660 7030003700 7030003690 7030003320 7030003440 7030003720 7030003560 7030003680 7030003720 7030003650 7030003380 7030003280 7030003720 7030003560 7030003720 7030003560 7030003720 7030003560 7030003520 7030003440 7030003560 7030003400 7030003210 7030003400 7030003640 7030003320 7030003440 7030004050 7030003360 7030003490 7030003350 7030003440 7030003690 7030003400 7030003470 7030003380 7030003280 7030003340 7030003450 7030003780 7030003640 7030003450 7030003600 7030003590 7030003200 7030003260 7030003560 7030003490 7030003500 7030003440 7030003660 7030004910 7030003590 7030004730 7030003400 7030003560 7030003690 7030003620 7030003680 7030003720 7030003700 7030003630 7030003540 7030003560 7030003690 7030003610 7030003800 7030004050 7030003560 7030003640 7030003560 7030003570 7030003530 7030003560 7030003570 7030003520 7030003560 7030003710 7030003400 7030003680 7030003580 7030003400 S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR
27. 11120 6070000210 6050011180 6200008240 6200008240 6200002850 6200008240 6200009470 6200003590 6200005670 S IC NJM12904V TE1 S FET 25 2974 S FET 2SK2973 MTS101P S TRANSISTOR 2SC3585 R44 T2B S TRANSISTOR 2SC5107 O TE85R S TRANSISTOR 2SC5107 O TE85R S TRANSISTOR 2SC5107 O TE85R S TRANSISTOR 2SC5107 O TE85R S TRANSISTOR DTC144EUA T106 S TRANSISTOR XP1214 TX S TRANSISTOR 2SC5085 Y TE85R S TRANSISTOR 2SC5085 Y TE85R S TRANSISTOR XP6501 TX AB S FET 2SK880 Y TE85R S TRANSISTOR DTA144EUA T106 S FET 3SK293 TE85L S FET 3SK272 TX S TRANSISTOR 2SC4215 O 85 S TRANSISTOR 2SC4116 GR TE85R S TRANSISTOR 2SB1132 T100 R S TRANSISTOR XP6501 TX S TRANSISTOR DTC144EUA T106 S TRANSISTOR UN911H TX S TRANSISTOR DTA144EUA T106 S TRANSISTOR 2SB1132 T100 R S TRANSISTOR XP6501 TX S TRANSISTOR 2SA1577 T107 S TRANSISTOR 2SA1577 T107 S TRANSISTOR DTC144EUA T106 S TRANSISTOR 2SC4116 GR TE85R S TRANSISTOR XP1213 TX S TRANSISTOR 2SC4215 O TE85R S TRANSISTOR DTC144TU T107 S FET 2SK1829 TE85R S DIODE S DIODE S DIODE S DIODE S VARICAP S VARICAP S VARICAP S DIODE S DIODE S VARICAP S VARICAP S VARICAP S VARICAP S DIODE S DIODE S DIODE S VARICAP S DIODE S DIODE S DIODE 1SV307 TPH3 RB706F 40T106 77 TX MA77 TX HVU350B TRF MA368 TX HVU350B TRF MA77 TX 77 TX HVU350B TRF HVU350B TRF HVU350B TRF HVU350B TRF MA77 TX RB706F 40T106
28. 1608 CH 1H 060B T A C1608 JF 1H 104Z T A C1608 CH 1H 470J T A C1608 CH 1H 470J T A C1608 JB 1E 104K T N C1608 JB 1E 104K T N C1608 JB 1H 103K T A C1608 CH 1H 090D T A C1608 CH 1H 080D T A C1608 CH 1H 1R5B T A C1608 CH 1H 470J T A C1608 CH 1H 070D T A C1608 CH 1H 030B T A C1608 CH 1H 030B T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 CH 1H 050B T A C1608 JB 1H 102K T A C1608 CH 1H 080D T A C1608 CH 1H 470J T A C1608 CH OR3B T A C1608 CH 1H 060B T A C1608 CH 1H 080D T A C1608 CH 1H 470J T A C1608 CH 1H OR5B T A C1608 CH 1H 080D T A C1608 CH 1H 470J T A C1608 CH 1H 050B T A C1608 CH 1H 220J T A C1608 JB 1H 102K T A C1608 CH 1H 100D T A C1608 CH 1H 050B T A C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 CH 1H 120J T A C1608 JB 1H 103K T A C1608 JB 1H 102K T A C1608 CH 1H 050B T A C1608 CH 1H 200J T A C1608 JB 1H 102K T A C1608 CH 1H 101J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 121J T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C2012 JF 1C 105Z T A C1608 JB 1H 102K T A C1608 JB 1E 104K T N C1608 CH 1H 030B T A C1608 CH 1H 070D T A C1608 CH 1H 040B T A C1608 CH 1H 560J T A MAIN UNIT 4030007010 4030006900 4030007170 4030007170 4030006860 4030006860 4030006860 4030006860 4510004640 4030006860 4030006850 4510006940 4030008920 4030007090 4550006700 4030008920 4030009660 4550006650 4030008630 4030009660 4510006
29. 224 V ERJ3GEYJ 683 V 124 V ERJ3GEYJ 223 V ERJ3GEYJ 223 V 22 ERJ3GEYJ 223 V 22 ERJ3GEYJ 473 V 47 EXB V4V 102JV 1 EXB V8V 102JV ERJ3GEYJ 104 V 100 ERJ3GEYJ 152 V 1 5 ERJ3GEYJ 394 V 390 ERJ3GEYJ 184 V 180 ERJ3GEYJ 823 V 82 ERJ3GEYJ 393 V 39 ERJ3GEYJ 104 V 100 ERJ3GEYJ 104 V 100 ko ERJ3GEYJ 124 V 120 10 kQ 470 Q 470 kQ 470 kQ 470 kQ 10 kQ 2 2 kQ 10 kQ 4 7 kQ 10 kQ 4 7 kQ 33 22 kQ 22 kQ 56 kQ 180 kQ 47 kQ 47 47 47 27 150 470 470 100 47 47 18 220 68 kQ 120 22 Land ili ERJ3GEYJ 104 V 100 ERJ3GEYJ 153 V 15 ERJ3GEYJ 471 V 470 102 V 1 ERJ3GEYJ 223 V 22 ERJ3GEYJ 223 V 22 ERJ3GEYJ 473 V 47 ERJ3GEYJ 104 V 100 ERJ3GEYJ 224 V 220 ERJ3GEYJ 222 V 2 2 ERJ3GEYJ 104 V 100 ERJ3GEYJ 683 V 68 ERJ3GEYJ 683 V 68 ERJ3GEYJ 683 V 68 6 ERJSGEYJ 683 V 68 ERJ3GEYJ 683 V 68 ERJ3GEYJ 184 V 180 MAIN UNIT 7030003760 7030003470 7030003700 7030003680 7030003680 7030003680 7030003680 7030003670 7030003440 7030003500 7030003440 7030003240 7030003320 4030009510 4030006980 4030009910 4030006860 4030006860 4030007090 4030006860 4
30. 333 V 33 kQ ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 470 V 47 Q ERJ3GEYJ 101 V 100 Q ERJ3GEYJ 333 V 33 kQ ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 100 V 10 Q ERJ3GEYJ 123 V 12 ERJ3GEYJ 221 V 220 Q ERJ3GEYJ 102 V 1 ERJ3GEYJ 563 V 56 ERJ3GEYJ 103 V 10 ERJ3GEYJ 101 V 100 Q ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 101 V 100 Q ERJ3GEYJ 473 V 47 ERJ3GEYJ 330 V 33 Q ERJ3GEYJ 221 V 220 Q ERJ3GEYJ 683 V 68 ERJ3GEYJ 101 V ERJSGEYJ 331 V 100 Q ERJ3GEYJ 683 V 68 ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 272 V 2 7 ERJ3GEYJ 332 V 3 3 ERJ3GEYJ 331 V 330 Q ERJ3GEYJ 332 V 3 3 ERJ3GEYJ 332 V 3 3 ERJ3GEYJ 221 V 220 ERJ3GEYJ 124 V 120 ERJ3GEYJ 104 V 100 ERJ3GEYJ 183 V 18 ERJ3GEYJ 104 V 100 ERJSGEYJ 223 V 22 ERJ3GEYJ 104 V 100 ERJ3GEYJ 682 V 6 8 ERJ3GEYJ 392 V 3 9 ERJ3GEYJ 102 V 1 ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 102 V 1 ERJ3GEYJ 103 V 10 ERJ3GEYJ 122 V 1 2 ERJ3GEYJ 470 V 47 Q ERJ3GEYJ 823 V 82 kQ ERJSGEYJ 473 V 47 473 V 47 ERJ3GEYJ 563 V 56 EXB V8V 102JV ERJ3GEYJ 470 V 47 ERJSGEYJ 103 V ERJSGEYJ 222 V 10 kQ 2 2 kQ ERJSGEYJ
31. 4EUA Q11 25 5085 D7 HVU350B HVC362 MUTE TXC ATT 1stLO Q33 SW 393 65 423 65 MHz 25 1829 RSSI AGC Q6 2SC5107 CONT Q17 FH D15 D14 D13 D12 25 4215 FL 335 Q16 HVU350B HVU350B HVU350B HVU350B 2SB1132 lt b 2 2 IF AMP gt SQL AMP DETECTOR 1st MIXER a 2 450 24 CERAMIC BPF Q22 5V d J4 ALFYM450F K EXT MIC PTT PTT SW HSJ1122 010010 IC9 IC2 TA75S01F IC3 TA31136FN MC1 KUC3523 MC INT MIC DET u DET gt CBI0 2ch VERSION 51 5 244 13 l PTT C Q19 2SB1132 IC6 BU4066BCFV ANALOG SW IC5C IC6 NJM13403V BU4066BCFV Q20 XP6501 SW A SW B UNIT 1 1 1 SW A TP70QF4161 REG Sp 1 x L NIMI 3403V SW B EMER SKHHLP014A Ri CH SELECT ANALOG I AF VR EMERGENCY SW IC5B NJM13403V VOLIN VOLOUT gt Q J5 4 021 DTC144EUA 4 EXT SP TA7368F 2 5 gt l HSJ1456 01 220 FUSE 081 CTCSS DTCS I LNJ107W5PRW Q1 XP4216 I BUSY LED RLED D17 RB706F 40 CLONE LEDSW BUFF 032 DTC144TU 1 TX LED 029 IC16 TXC 2SC4116 NJM12904V IC8 S 80942ANMP BEEP gt HD6433664A24FP except F22SR NOIS HD6
32. 4F3664FP F22SR only RSSI Q30 Q28 NJM2870F05 XP1213 DTC144EUA LVIN BDET IC11 Q23 58 2416 DTA144EUA Q24 Q25 BATV 2SB1132 XP6501 EEPROM S5 REG IC12A IC12B Explanatory notes NJM12904V NJM12904V X3 Q26 CR 702 SSA1577 gt CONTROL LINE D16 COMMON LINE MA77 TX LINE gt LPF Q27 BU4094BCFV RX LINE IC5A 2SA1577 NJM13403V T5V REG SECTION 12 VOLTAGE DIAGRAM NOTE 4 F21 F21BR F21GM and F21S 8 F22 F22S and F22SR F21BR F21GM and F22SR F21 F21S F22 and F22S F21BR 2215 and 2225 210 221 222 and F22SR VCC VCC VCC T5V T5V Sov 55 012 XP6501 R28 5V 5V zei 1 22 C56 3 3k 27k n 5V 5V R44 n C55 i C52 R47 47 Q13 1k LV EEE Tee WP 4P aio 9 C82 R48 2SK880 Y 78 eh C50 2SC5085 Y CR 671A 82k Q31 I 0 001 R220 css BP ss a L13 ol 22 11 nH 1 W 28C4215 I 114 1 4 I I 4 7 H le AN C253 9 P jd B nn C59 BE 47 P 16 I HVU350B R32 C61 60 C93 3 3k 47 P 0 001 s2 47P PT C46 m 117 C69 C67 C66 C65 470 r 47H 7P 0 3 P 1 5P 5P 116 42 R41 p l 11 nH 1 1k 3 9k 1 1 lt 8 C75 zz C74 DTC144l C77 ZZ D6 R34 R240 76 0 1 T 9 001 D7 C70 1 3 4 0 047 27 HVU350B MA368 120k 8k OV lt lt gt TT 0 001 AN p N c
33. 6 A61X C1608 CH 1H 070D T A ECST1EY105R C1608 CH 1H 470J T A S ELECTROLYTIC ECEV1CA100SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 CH 1H 470J T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 CH 1H 0R5B T A C1608 CH 1H 050B T A F21 F21BR F21GM F21S 8 F22 2225 F22SR F21BR F21GMI 22258 S Surface mount 2 F21 F21S F22 F22S F21BR F21S F22S E F21GM 221 222 F22SR 6 3 MAIN UNIT ORDER ORDER TE EJ ces TE ORT oma 4030007010 4030009920 4030009540 4030009570 4540000040 4030009920 4030006860 4030012600 4030006860 4030007090 4030006860 4550006360 4550006450 4030008920 4030006860 4030007090 4030007130 4030008630 4030007130 4030006860 4510005860 4030006860 4030007090 4030011600 4030006860 4030011770 4030011770 4030008630 4030007090 4030007090 4030011600 4030011600 4030006900 4030007000 4030006990 4030009540 4030007090 4030006980 4030009530 4030009530 4030006860 4030007090 4030006860 4030007090 4030009920 4030006860 4030006990 4030007090 4030009570 4030011770 4030006990 4030007090 4030009500 4030006990 4030007090 4030009920 4030007050 4030006860 4030007010 4030009920 4030007090 4030006860 4030007020 4030006900 4030006860 4030009920 4030009990 4030006860 4030007130 4030006860 4030006860 4030007140 4030006860 4030006860 4030006860 4030008680 4030006860 4030011600 4030009530 40300
34. C113 C106 0 001 14 124 HVU350B L23 0 3 P ap F 07 HVU350B 10V B7 20V 124 R60 R86 R82 L25 10 nH C120 C117 220 k 10 nH C105 R61 100 R59 R54 I C133 220 T 47k 33 nH T 8P T R74 R72 ISP T R70 D13 T T R62 T T 1k 120k 01 T 68k 10k 2d C128 ok 220 k C116 220 HVUS50B 220k D10 C100 09 C99 2 0 001 C127 C122 C110 C109 R68 i 47P 5 6P C114 47 P 0 001 330 MA77 8P 77 9P TA75S01F R75 C118 R73 R71 47 R63 C103 10k 1214 47 10k E A 4 10km 47P 100 Fr 47 VCC S5V S5V S5V 5V 2SB1132 R 259 m IC6 BU4066BCFV s ON 4 8 V R110 3 3k 109 022 68k MA2S111 C163 R126 X NJM13403V R114 C173 m M 1 C175 0 0056 10k 2 R238 01 7 100 k T 1 XP6501 J C166 C165 S 2 R112 C172 C171 R107 C170 R106 C169 C168 10 47 gt m 22k 47 2 022 1k 0 1 33k 68 0 22 VOLOUT 024801 VOLOUT lt VOLOUT AFOUT 44 AFOUT m 9 M62363FP 650C CPU5V R165 4 8 V R151 INS ES GUN I NTCCM2O124AG473CT T 3 04 id vour R152 QR 15k O GN IC8 S 80942ANMP DD6 100 k only st ie a RURAN SCK 7 pop 9990 E 9 595 932 x 16 lt lt lt lt lt lt lt lt T3 10 15 BAL R155 14 7456 MHz o caomaeiuir 2 1 T4 11 2 14 REF R156 10 VIN5 13 3 m IC7 oc HD6433664A24F
35. C9 Fa _ 2 3 TATA Output tunable bandpass filters con 10 11 i trol signals 14 REF Outputs differential voltage for the ref erence oscillator Q31 D19 X1 Outputs DTCS balance control signal Outputs modulating signal for the modulator circuit D6 SECTION5 ADJUSTMENT PROCEDURES 5 1 PREPARATION When you adjust the contents on page 5 5 or 5 6 SOFTWARE ADJUSTMENT the optional CS F21 ADJ ADJUSTMENT SOFTWARE Rev 1 0 or later OPC 478 CLONING CABLE and a JIG CABLE see illustration at page 5 2 are required REQUIRED TEST EQUIPMENT EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE DC power supply Output voltage 7 2 V DC Current capacity or more Measuring range 1 10 W RF power meter Frequency range 300 600 MHz terminated type Impedance 500 SWR Less than 1 2 1 Frequency range 0 12600 MHz Frequency counter Frequency accuracy 1 ppm or better Sensitivity 100 mV or better Frequency range DC 600 MHz Measuring range 0 to 5 kHz SYSTEM REQUIREMENTS IBM PC compatible computer with an RS 232C serial port 38400 bps or faster Microsoft Windows 95 or Windows 98 Intel i486DX processor or faster Pentium 100 MHz or faster recommended At least 16 MB RAM and 10 MB of hard disk space 640x480 pixel display 800x600 pixel display recommend ed ADJUSTMENT SOFTWARE INSTALLATION D Boot up Windows Quit all applications
36. CERAMIC S CERAMIC S CERAMIC S CERAMIC CONNECTOR CONNECTOR C1608 JB 1H 223K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A C1608 JB 1H 272K T A C1608 JB 1H 562K T A C1608 CH 1H 181J T A C1608 JB 1H 822K T A C1608 CH 1H 680J T A C1608 JB 1E 104K T N C1608 JB 1E 104K T N C1608 JB 1A 474K T N C1608 JB 1H 102K T A C1608 CH 1H 101J T A C1608 CH 1H 090D T A C1608 JB 1H 102K T A C1608 JB 1E 104K T N C1608 CH 1H 470J T A C1608 JB 1H 103K T A C1608 JB 1H 102K T A C1608 CH 1H 470J T A IMSA 9230B 04Z120 T IMSA 9230B 07Z120 T only S CONNECTOR BM02B ASRS TF CONNECTOR HSJ1122 010010 CONNECTOR HSJ1456 01 220 S CONNECTOR 06FLT SM1 TB S CONNECTOR IMSA 9178S 04Y901 MICROPHON S SWITCH S SWITCH S SWITCH S JUMPER S JUMPER S JUMPER S JUMPER S JUMPER S JUMPER PCB PCB S BEAD S BEAD S BEAD S BEAD S BEAD S BEAD S BEAD ANTENNA 2458 ANT F22SR only F22SR only KUC3523 040245 EVQ PUL 02K EVQ PUL 02K EVQ PUL 02K ERJ3GE JPW V ERJ3GE JPW V JPW V ERJ3GE JPW V JPW V ERJ3GE JPW V B 5601D B 56858 BLM11B221SB BLM11B221SB BLM11B221SB BLM11B221SB BLM11B221SB BLM11B221SB BLM11B221SB E only only F22SR only F21 F21BR F21GM F21S 8 F22 F22S F22SR F21BR F21GM F22SR 2 F21 F21S F22 F22S E F21BR F21S F22S F21GM 221 222 F22SR S Surface mount
37. DTA144 EU 0 1 9 x 14 7456 MH 9502 55552555576 15 BAL i R155 z t6 WG ME a C212 2k m R156 3 72 2 1 m m IC7 F e 0 001 HD6433664A24FP x 53149 T zi m 5 except F22SR rt C214 Q 2 5 HD64F3664FP EZB 47 P S5V 55 a 7 F22SR only 5 14110 J4 m 2 E MIC 5 IC5A Q29 R210 R216 R217 R218 2 R219 NJM13403V 2SC4116GR 120 22 47k 100k 220k R185 BU4094BCFV 27k R214 Q 1k C223 5 2 tonecode 1 EXT SP I a DTC144TU T C245 transmitting Bios 5 T T RB706F 40 IVER 22k J6 F22SR only C240 C239 238 ae oe R192 IC13 a 47 P 0 001 0 001 3 5 18k TC7S66FU 2 928 DTC144EU E gt gt lt Scio 9 R223 R224 4 R225 R226 R190 N O 4 68k 68k ef 68 k 68 k ni 47 o 5 O 0002 ie 0246 IC16B NJM12904V IC12A 191 u BDET Q 0 0027 180 P NJM12904V 68 P 229 C225 47k Q30 XP1213 CTCSS code transmitting 5 a ve NJM12904V 2 47 ATTI 3 1 V P P 8 B 5 lt gt i i 00 HN58X2416TI 0 039 H Ba 12 2 SW A AND SW B UNITS SW A UNIT gt CP10 L 1 ee 5 8 4 8 5 CP13 Q CP9 TP76N00N 15F 10KA 2251 Ri 1 7 CP1 L CP8 Fi MOX HV gt CP3 L Q Q RX SQL OPEN 0 V TX 41V LNJ107zW5PRW RX SQL OPEN 2 1 V RX SQL OPEN 4 1 V 5 1 TX TX OV YA
38. JSGEYJ 682 V ERJSGEYJ 103 V ERJSGEYJ 124 V ERJSGEYJ 273 V ERJ3GEYJ 105 V ERJ3GEYJ 1R0 V ERJ3GEYJ 103 V ERJSGEYJ 473 V ERJSGEYJ 103 V ERJSGEYJ 123 V ERJSGEYJ 562 V ERJSGEYJ 103 V ERJ3GEYJ 123 V ERJSGEYJ 472 V ERJ3GEYJ 103 V ERJSGEYJ 184 V ERJSGEYJ 471 V ERJSGEYJ 104 V ERJ3GEYJ 153 V ERJSGEYJ 471 V 68 kQ 150 kQ 120 kQ 100 Q 1 220 10 100 220 56 330 0 47 0 220 10 220 10 220 10 4 7 1 10 kQ 470 120 470 47 100 0 Q Q 2 7 kQ 180 Q 1 120 470 1 8 330 0 47 150 1 2 680 47 1 2 22 18 100 33 10 2 7 3 3 ko 1 68 3 3 18 2 2 470 10 120 33 100 220 150 39 6 8 10 120 27 Mo gt lt lt lt lt gt gt gt gt 47 10 12 ko 5 6 10 12 4 7 10 180 470 100 15 470 w gt lt lt lt lt S Surface mount F21 F21BR F21GM F21S 222 F22S F22SR 22188 F21GM F22SR 0 F21 2215 F22
39. K SS s T je L18 R27 LOCK4 5V 020 C86 C88 C87 ims C90 15nH C91 R39 R38 C72 R37 C71 R36 R35 10k UNLDEKOSV MADE 6001791 T JAP c89 76 6 P 100k 22k 1 0 001 100 1 18k 100k DEV 0017 DEV 251 5V 5V d 0 001 W13 Wi2 R5V R5V REV S5V S5V S5V only only only 04 T R96 OV 35V C150 C148 R95 RSSI 4P 3P 150 pod J1 C153 R83 only 0 01 R97 ae H OV 100 4 5V I 680 k IC3 TA31136FN 29V 7P 0 82 H OSCOUT 1k SW A UNIT C152 Q18 19 17 ALFYM450F k 2 OSCIN al R90 600 L 939 10P N Si P T a DR m 5 12 _ R88 C132 3SK272 988 C154 3 ae 180 uU 0 001 UN seus aid ee R86 R82 0 C133 220 T I 47 k C158 C157 C156 R100 rl ___ ____ gl 9 ___ I 5P C128 001 0 001 0 001 Be R98 2SC4215 O I 0 001 127 R99 47k 12k C147 C146 L C145 C144 o 5 27k ib C155 01 J T 0 0017 1 0 0017 cio n 20 ur 0 001 4 _____ voc UNITS 5b RED 55 S5V S5V 38 5 5 R133 VOLOUT EI se 12 IC5B NJM13403V 24V IC6 BU4066BCFV 70 C187 0 0058 IC5C NJM13403V 470 C162 C161 C160 PTTON 4 8V 0 022 10 a C182 C181 PTT OFF 022 UN911H gt PIT 4 R140 lt 3 4 15k 3 z z 9 gt gt gt gt ol ol B 2 2 9 0 189 C188 gt gt gt HE E 9 P uic 470 P 10 VOLIN YOUN vaout VOLOUT
40. MA2S111 TX HVC362TRF MA2S111 TX MA2S111 TX MA2S111 TX S MONOLITH CERAMIC FL 335 46 350 MHz ALFYM450F K S XTAL CR 671A 15 300 MHz S DISCRIMINATOR CDBCA450CX24 S XTAL CR 702 14 7456 MHz S COIL S COIL S COIL S COIL S COIL S COIL S COIL 0 30 0 9 5TL 14N 0 30 0 9 5TL 14N NL 252018T R82J 0 30 0 9 5TL 14N 0 40 0 9 2TL EXCCL3225U1 ELJRE 12NG F S Surface mount F21 F21BR F21GM F21S 8 222 F22S F22SR 2 F21 F21S F22 F22S F21BR F21GM F22SR E F21BR 2215 F22S F21GM 221 F22 F22SR 6 1 MAIN UNIT ORDER ORDER E E E E cene ELJRE 15NG F ELJRE 27NG F ELJRE 27NG F 0 45 1 4 3TL 11N NL 252018T 4R7J ELJFC R68M F 0 45 1 4 3TL 11N NL 252018T 4R7J ELJRE 15NG F 0 30 0 9 5TL 14N 0 30 0 9 5TL 14N LQN21A 10NJ04 LQN21A 10NJ04 LQN21A 10NJ04 LQN21A 10NJ04 ELJRE 33NG F NL 252018T 1R0J NL 252018T R82J NL 252018T R22J NL 252018T 390J 6200005680 6200005710 6200005710 6200009360 6200002860 6200002800 6200009360 6200002860 6200005680 6200008240 6200008240 6200007670 6200007670 6200007670 6200007670 6200005720 6200001980 6200002850 6200002840 6200009210 6200009760 7030003670 7030003320 7030003580 7030003440 7030003200 7030003280 7030003620 7030003520 7030003280 7030003320 7030003620 7030003520 7030003200 7030003570 7030003360 7030003440 7030003650 7030003560 7030003320 7030003520 7030
41. ON TP76N00N 15F 10KA 2251 331 V 330 0 ERJ3GEYJ 561 V 560 Q KAB 2402 322 NA29 LNJ107W5PRW TP70QF4161 16F 2458A 5603C 5603C F21 F21GM 222 F22SR SW B UNIT F21BR F21S AND F22S DESCRIPTION TP76NOON 15F 10KA 2251 331 V 330 0 ERJ3GEYJ 561 V 560 Q KAB 2402 322 NA29 LNJ107W5PRW ERDS2T0 ERDS2T0 5604 5604 F21BR 2215 225 MB15A02PFV1 G BND ER TA75S01F TE85R TA31136FN D EL TA7368F TP1 NJM13403V TE1 BU4066BCFV E1 HD6433664A24FP FX 2458A 1 except F22SR HD64F3664FP FX 2458B F22SR only S 80942ANMP DD6 T2 M62363FP 650C NJM2870F05 TE1 58 2416 NJM12904V TE1 TC7S66FU TE85R BU4094BCFV E2 MAIN UNIT ORDER E E mar 1110005330 1560001050 1560001020 1530002620 1530003310 1530003310 1530003310 1530003310 1590000430 1590001400 1530003230 1530003230 1590001190 1560000540 1590000720 1580000730 1580000660 1530002600 1530002690 1520000460 1590001190 1590000430 1590002530 1590000720 1520000460 1590001190 1510000920 1510000920 1590000430 1530002690 1590001770 1530002600 1590000660 1560000840 1750000580 1790001670 1790000620 1790000620 1720000780 1720000570 1720000780 1790000620 1790000620 1720000780 1720000780 1720000780 1720000780 1790000620 1790001670 1790001250 1750000830 1790001250 1790001250 1790001250 2030000150 2020001840 60500
42. P R204 Q except F22SR 390 k A HD64F3664FP JEPANG 2 E i F22SR only i R203 m NS p Sz R205 11 IC5A 2 5 V 25 NJM13403V lo C233 232 IC15 O Foi EU I BU4094BCFV R187 470 R189 2 5 1908 470 k J6 F22SR only RES C222 0 047 CPU5V lt No o o TI 028 DTC144EU R186 150 k QI il NJM12904V CTCSS code transmitting 3 1 VP P oo an aD e So I 58 2416 SECTION 12 VOLTAGE DIAGRAM NOTE 4 F21 F21BR F21GM and F21S 8 F22 F22S F22SR F21BR F21GM and F22SR F21 F21S F22 and 2225 F21BR F21S and 2225 P F21GM F21 222 and F22SR VCC VCC 5 5 55 S5V 012 6501 AB ES 5 5V 6r 41 R28 5V sl 47 C56 3 3k 27k 5V 5V R44 613 1 C48 T is P 1055 52 a VCC VCC R47 47 Q13 LV ap 4P 4 51 R50 R51 TE n aoe T AT c54 5 VCO5V GERD 14 4n 56k 47 k
43. S TOP VIEW SW A UNIT SW B UNIT BOTTOM VIEW SW A UNIT J1 2 to MAIN unit J1 to the MAIN unit J2 SW B UNIT SECTION 10 146 OPTIONAL DESKTOP CHARGER INFORMATION 10 1 PARTS LIST 10 2 DISASSEMBLY INFORMATION CHARGE UNIT ODER NO DESCRIPTION 7010007550 RESISTOR ERG3SJ680H 7010007100 RESISTOR PSD1 4V 1 6510021470 CONNECTOR 0470 01 230 5040001390 LED TLG124A 0910053820 PCB B 5650 8930051340 2338 TERMINAL 8930051340 2338 TERMINAL CHASSIS UNIT REF NO ODER NO DESCRIPTION 8010018620 2447 case 8110007450 2447 cover MP2 8 8930039620 Leg cushion A 8930055020 2480 spacer 8930055030 2480 BC spacer 8810008660 Screw BO M 3 x 8 NI ZU BT Screw abbreviations BO BT Self tapping NI ZU Nickel Zinc CHARGE unit y NOTE CHASSIS UNIT CHARGE UNIT 10 1 10 3 VOLTAGE DIAGRAM N 13 8V N 13 8V 1 J1 DS1 HECO470 01 230 TLG124A 10 4 BOARD LAYOUT SECTION 11 BLOCK DIAGRAM Q8 DTC144EUA Q12 lt MAIN UNIT S5V RIPPLE vco RSV Q13 L FIL SW lt 2SK880 ANT 440 470MHz WV Q10 28C5085 LVIN lt BUFF K gt 05 HVU350B Y 1 CR 671A Q1 D2 D1 1SV307 Q7 Q5 Q4 Q3 Q2 MBISABeIT v1 28C5107 25 5107 MATI 2505107 2603585 2SK2973 2SK2974 RB706F 40 D9 D10 MA77 7 L 7 7 15 3MHz PRE PWR PWR ANT DRIVE AMP DET sw K LPF Q14 DTA14
44. S 5 R12 lt C31 W14 C30 C21 3 029 Ss 917 e a R 5 ur _ D mi cO Cm NO 1 9 BOTTOM VIEW 9 2 IC F21 F21S F21BR F21GM MAIN UNIT TOP VIEW con C m N T gin 9 5 N oy a N s ERG SE BBE a Er C198 SIEB al N pu R190 R225 EP R156 6246 y T224 R191 O a 2 R136 R129 J2 229 2 to the SW A B units J 7 GND D 2 VOLIN VOLOUT 1 CBIO co c c J1 to the SW A unit C159 IC16 R226 C193 R155 C245 X2 gt 5 CN R194 FI IN C258 R245 0 C124 4 e R19 PC Po 116 C6 C66 4 N C158 ca 55 WE mes ims Ts JT TT TTM R31 R24 d C48 m C156 1 o R164 TM AL AL AL n P L13 C _ SUR a 206 EI N O D El 55 R34 5 C65 C69 51 g O C50 R29 R28 8214 4 17 L14 2 B5601D C15 J4 J 8 B ZUR N 24745 D o S m B dM 3 MC1 N J Le J3 CQ to the speaker C201 BOTTOM VIEW 9 3 SW A AND SW B UNIT
45. S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR ERJSGEYJ 683 V ERJSGEYJ 154 V ERJSGEYJ 124 V ERJ3GEYJ 101 V ERJ3GEYJ 102 V ERJSGEYJ 224 V ERJ3GEYJ 103 V ERJSGEYJ 104 V ERJSGEYJ 224 V ERJSGEYJ 563 V ERJ3GEYJ 331 V ERJSGEYJ 470 V ERJSGEYJ 224 V ERJSGEYJ 103 V ERJSGEYJ 224 V ERJSGEYJ 103 V ERJSGEYJ 224 V ERJSGEYJ 103 V ERJSGEYJ 472 V ERJSGEYJ 102 V ERJ3GEYJ 103 V ERJSGEYJ 471 V ERJ3GEYJ 120 V ERJSGEYJ 471 V ERJSGEYJ 473 V ERJ3GEYJ 101 V ERJSGEYJ 102 V ERJ3GEYJ 1R0 V ERJ3GEYJ 221 V ERJSGEYJ 272 V ERJ3GEYJ 181 V ERJSGEYJ 102 V ERJSGEYJ 124 V ERJSGEYJ 471 V ERJ3GEYJ 182 V ERJSGEYJ 331 V ERJSGEYJ 470 V ERJ3GEYJ 151 V ERJSGEYJ 122 V ERJSGEYJ 684 V ERJSGEYJ 473 V ERJSGEYJ 122 V ERJSGEYJ 223 V ERJSGEYJ 183 V ERJSGEYJ 100 V ERJSGEYJ 330 V ERJ3GEYJ 103 V ERJSGEYJ 272 V ERJSGEYJ 332 V ERJSGEYJ 102 V ERJSGEYJ 683 V ERJ3GEYF 332 V ERJ3GEYJ 183 V ERJ3GEYF 222 V ERJSGEYJ 471 V ERJSGEYJ 103 V ERJSGEYJ 124 V ERJSGEYJ 333 V ERJSGEYJ 104 V ERJSGEYJ 224 V ERJSGEYJ 154 V ERJSGEYJ 393 V ER
46. Unplug J6 to separate the front panel and the chassis Black 2mm x 2 REMOVING THE MAIN UNIT Remove the searing rubber 2 Unsolder 2 points E and unscrew 2 nuts 3 Unscrew 9 screws silver 2mm to separate the chassis and the MAIN unit Take off the MAIN unit in the direction of the arrow 2215 F21BR 2225 only Side plate Sealing rubber MAIN unit Guide holes SECTION 4 CIRCUIT DESCRIPTION 4 1 RECEIVER CIRCUITS 4 1 1 ANTENNA SWITCHING CIRCUIT The antenna switching circuit functions as a low pass filter while receiving However its impedance becomes very high while D9 and D10 are turned ON Thus transmit signals are blocked from entering the receiver circuits The antenna switching circuit employs a 4 type diode switching system Received signals are passed through the low pass filter L1 L2 C5 The filtered signals are applied to the YA type antenna switching circuit D9 D10 The passed signals are then applied to the RF amplifier cir Cuit 4 1 2 RF CIRCUIT The HF circuit amplifies signals within the range of frequen coverage and filters out of band signals The signals from the antenna switching circuit are amplified at the RF amplifier Q15 after passing through the tunable bandpass filter D12 L21 C104 C105 The amplified sig nals are applied to the 1st mixer circuit Q16 after out of band signals are suppressed at the 3
47. W Low1 2 0 W except low2 1 0 W except Modulation system Max permissible deviation 5 0 kHz 25 kHz 2 5 kHz 12 5 kHz 2 5 kHz 12 5 kHz only In Low power stand by ESES Current dra Variable reactance frequency modulation External mic connector 3 conductor 2 5 mm in 2 Frequency error 2 5 ppm 1 5 kHz Spurious emissions 73 dBc typical 0 25 uW lt 1 GHz 1 00 uW gt 1 GHz Adjacent channel power 70 dB 25 kHz 60 dB 12 5 kHz Audio harmonics distortion typical at 1 kHz 40 deviation 5 typical at 1 kHz 60 deviation FM Hum and noise 46 dB typ 25 kHz 40 dB typ 12 5 Residual modulation 45 dB typ 25 kHz 43 dB typ 12 5 kHz Limiting charact of modulator 70 96 100 of max deviation Double conversion super heterodyne Intermediate frequencies 1st 46 350 MHz 2nd 450 kHz 0 25 uV typical for 12 dB SINAD Sensitivity 0 25 uV typical for 12 dB SINAD 0 63 uV typical for 20 dB SINAD 26 5 dBuV m for 20 dB SINAD Audio output power at 7 2 V 0 5 W at 5 distortion with an 8 Q load 0 6 W at 5 distortion with 6 Q load 70 dB typ 25 kHz 65 dB typ 12 5 kHz 70 dB 25 kHz 60 dB 12 5 kHz 81 29 dBuV m TRANSMITTER GENERAL Adjacent channel selectivity FM Hum and noise Typical 46 dB 25 kHz 40 dB 12 5 kHz 45 dB 25 kHz 43 dB typ 12 5 kHz Squelch sensitivity 0 3 uV typical at threshold
48. Y SEMI CONDUCTOR INFORMATION BOARD LAYOUTS IC F22 F22S F22SR MAIN UNIT riii IC F21 F21S F21BR F21GM MAIN UNIT SW A AND SW BUNITS BC 146 OPTIONAL DESKTOP CHARGER INFORMATION PARTO LIS ee ne u dent oe Z e sms au DISASSEMBLY INFORMATION u 3 au ua ee van ee ar m ee VOLTAGE DIAGRAM BOARD LAYOUT vee gues as SES ne ee UR es GE EORR DR BLOCK DIAGRAM VOLTAGE DIAGRAM MAN INI u yuya catus was oe dew SW A AND SW BUNITS SECTION 1 SPECIFICATIONS EIA 152 C 204D or TIA 603 ETS 300 086 300 296 440 000 MHz 470 000 MHz 440 000 MHz 470 000 MHz Frequency coverage 462 550 MHz 469 550 MHz 446 00625 MHZ 446 09375 MHz 462 550 MHz 467 725 MHz 16 at 25 12 5 kHz W N type 8K50F3E at 12 5 kHz N type 2 ch IC F21BR 2215 F22S 15 ch IC F21GM F22SR 16 ch IC F21 222 Antenna impedance 50 Q normal 1st 46 350 MHz 2nd 450 kHz High power 1 6 A 4 W except 4 1 2 A 2 W except 0 5 A 0 5 W only 0 8 A 1 W 70 mA Rated audio 250 mA Dimensions 54 W x 128 H x 37 D mm 2V8 W x 5V25 H x 1192 D inch Projections not included Weight 310 g 10 1 oz with BP 209 300 g 10 6 oz with BP 222 RF output power at 7 2 V DO High 4 0 W 2 0 W 0 5
49. ad ZK Black NI ZU Nickel zinc 8510011180 8510014320 8930055690 ACCESSORIES REF NO ODER NO DESCRIPTION Optional product Optional product Optional product Optional product Optional product 1923 VCO cover 2458 main shield Sponge GT Antenna FA SC57U Battery BP 209 Battery BP 222 D BC 147A 147 22258 only 146 F22SR only except F22SR 1922 Belt clip MP21 ES MP32 C MP27 C MP8 C MAN de A nd y MP29 C MP13 C gt MP9 MP35 C F21S 22188 and 2225 only a i MP18 C 9 K MP19 C F21 F21GM F22 and F22SR only MP6 M MP26 MP29 C MP33 C MP7 M X Ber D MP4 C Se eo a gt AN z SP1 vn gt PE D on FT MP15 C MP10 C MAIN unit MP1 M MP2 M MP29 C MP30 C MP11 C MP29 C MP1 C MP20 C UNIT abbreviation C CHASSIS PARTS M MAIN UNIT SECTION8 SEMI CONDUCTOR INFORMATION e TRANSISTOR AND FET S 2SA1577 Q 2SB1132 R 2SC3585 R44 2SC4116 GR 2SC4215 O Symbol HQ Symbol BARB Symbol R44 Symbol LG Symbol QO 25C5085 Y 25C5107 25K880 Y 2SK1829 2SK2973 Symbol MCY Symbol MFO Symbol XY Symbol K1 Symbol K1 dep stip 2SK2974 3SK272 3SK293 DTA144 EUA DTC144 EUA Symbol K2974 Symbol K Symbol UF Symbol 16 Symbol 26 D ie PP
50. any Phone 0211 346047 Fax 0211 333639 URL http www icomeurope com Icom Spain S L Crta de Gracia a Manresa Km 14 750 08190 Sant Cugat del Valles Barcelona SPAIN Phone 93 590 26 70 Fax 93 589 04 46 URL http www icomspain com Icom UK Ltd Unit 9 Sea St Herne Bay Kent CT6 8LD U K Phone 01227 741741 Fax 01227 741742 URL http www icomuk co uk Icom France S a Zac de la Plaine Rue Brindejonc des Moulinais BP 5804 31505 Toulouse Cedex France Phone 561 36 0303 Fax 561 36 03 00 URL http www icom france com Asia Icom Inc 6F No 68 Sec 1 Cheng Teh Road Taipei Taiwan R O C Phone 02 2559 1899 Fax 02 2559 1874 Count on us Icom Inc S 13806IZ C1U 1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan 2001 Icom Inc
51. frequency Top Connect a SINAD meter with an 12 dB SINAD LEVEL 455 000 MHz panel 8Q load to the SP jack SQL 466 050 MHz 465 138 MHz 446 09375 MHz e Channel spacing Narrow Connect a standard signal generator to 2 the antenna and set as Frequency 455 000 MHz 9 466 050 MHz 465 138 MHz 446 09375 MHz O Level 0 2 uV 121 dBm Modulation 1 kHz Deviation 1 75 kHz zn k Q the audio signals F21 F21S 222 and F22S 8 F21BR F21GM 0 F22SR The output level of the standard signal generator SSG is indicated as the SSG s open circuit In case of IC F22SR instead of the antenna connector connect to the J7 as shown page 5 3 S SIUE BPF T1 H BPF 4 just appears SECTION 6 PARTS LIST 7210003060 7030003380 7030003410 5210000710 5040002070 2250000450 0910053673 0910054163 7210003060 7030003380 7030003410 5210000710 5040002070 7120000470 7120000470 0910053683 0910054173 MAIN UNIT ORDER WR soto 1140005990 1110002750 1110003490 1110001810 1110005320 1130008090 1140009850 1140010200 1130009110 1190000350 1110005350 1130010390 1110005330 1130007020 1130007570 VARIABLE S RESISTOR S RESISTOR S FUSE S LED ENCODER PCB PCB VARIABLE S RESISTOR S RESISTOR S FUSE S LED JUMPER JUMPER PCB PCB SW A UNIT F21 F21GM F22 AND F22SR DESCRIPTI
52. gen erates the transmit frequency and divided ratio based on serial data from the CPU and compares the phases of VCO signals with the reference oscillator frequency The PLL IC detects the out of step phase and output from pin 5 The ref erence frequency 15 3 MHz is oscillated by X1 4 3 2 TX LOOP The generated signal at the TX VCO Q11 D7 enters the PLL IC IC1 pin 8 and is divided at the programmable divider section and is then applied to the phase detector section The phase detector compares the input signal with a refer ence frequency and then outputs the out of phase signal pulse type signal from pin 5 The pulse type signal is converted into DC voltage lock voltage at the loop filter R40 R42 C75 C77 and then applied to varactor diodes D6 of the TX VCO to stabilize the oscillated frequency 4 3 3 RX LOOP The generated signal at the RX VCO Q10 D5 enters the PLL IC IC1 pin 8 and is divided at the programmable divider section and is then applied to the phase detector section The phase detector compares the input signal with a refer ence frequency and then outputs the out of phase signal pulse type signal from pin 5 PLL CIRCUIT 45 9 MHz po Programmable counter The pulse type signal is converted into DC voltage lock voltage at the loop filter 40 42 74 77 a
53. ignals twice improves the image rejection ratio and obtains stable receiver gain The 1st IF signal from the IF amplifier is applied to the 2nd mixer section of the FM IF IC IC3 pin 16 and is mixed with the 2nd LO signal to be converted into a 450 kHz 2nd IF sig nal The FM IF IC contains the 2nd mixer limiter amplifier quad rature detector and active filter circuits A 2nd LO signal 45 9 MHz is produced at the PLL circuit by tripling it s ref erence frequency The 2nd IF signal from the 2nd mixer IC3 pin 3 passes through a ceramic filter FI2 to remove unwanted hetero dyned frequencies It is then amplified at the limiter amplifi er 103 pin 5 and applied to the quadrature detector 103 pins 10 11 to demodulate the 2nd IF signal into AF signals 4 1 5 AF CIRCUIT AF signals from the FM IF IC IC3 pin 9 are applied to the analog switch IC6 pin 1 after being passed through the high pass filter IC5B pins 5 7 via the DET signal The signals pass through the low pass filter IC5D pins 13 14 and then applied to the analog switch IC6 pins 9 10 again The output signals from the analog swtich IC6 pin 11 are applied to the AF power amplifier IC4 pin 4 after being passed through the VOL control SW A SW B unit R143 via the VOLIN and VOLOUT signals 2nd IF filter 450 kHz SESS Pie E IC1 Cm ONG X1 15 3 MHz IC3 TA31136F 1st IF from the IF amplifier
54. io generator to an RS 232C port Personal computer 885 O04 1 EA 14 14 d pt mf 1 I I DB9 female plug incl level converter circuit to SP JIG cable SINAD meter Speaker 8 Q 225 ANTENNA CONNECT POINT NOTE When adjusting SOFTWARE ADJUST MENT of IC F22SR connect the Standard Signal generator RF power meter etc to the J7 See illustration at above 5 2 PLL ADJUSTMENT MEASUREMENT ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITIONS VALUE UNIT w UNIT ADJUST Transmitting 13 V EU 1 8 V EU PLL LOCK Operating frequency MAIN Connect a digital multi 1 3 V MAIN C54 VOLTAGE 440 000 MHz 9 meter to check point 1 8 V D 462 550 MHz LV 446 00625 MHz O Receiving i F21 F21S 222 and F22S 8 F21BR F21GM D F22SR RF power meter C54 PLL lock voltage adjustment RX e C68 PLL lock voltage adjustment TX zu a LV PLL lock voltage check point TOP VIEW 5 3 SOFTWARE ADJUSTMENT Select an operation using T 4 keys then set specified value using lt gt keys on the connected computer keyboard MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION REFERENCE Ope
55. is then applied to the antenna connector The bias current of the pre drive Q2 and the power ampli fier Q1 is controlled by the APC circuit 4 2 5 APC CIRCUIT The APC circuit IC2 protects the drive and the power amplifiers from excessive current drive and selects HIGH or LOW output power The signal output from the power detector circuit D2 is applied to the differential amplifier IC2 pin 3 and the T4 signal from the expander IC9 pin 11 controlled by the CPU IC7 is applied to the other input for reference When the driving current is increased input voltage of the differential amplifier pin 3 will be increased In such cases the differential amplifier output voltage pin 4 is decreased to reduce the driving current AF CIRCUIT IC5B DET signal Analog from IC3 pin 9 switch o 10 IC6 NWC signal from IC15 pin 14 SW A SW B unit GED APC CIRCUIT VCC HF signal D1 from PLL Q1 Power LPF to antenna amp 9 S5V 2 APC control circuit sel Power detector circuit D2 4 3 PLL CIRCUIT 4 3 1 GENERAL A PLL circuit provides stable oscillation of the transmit fre quency and receive 1st LO frequency The PLL output com pares the phase of the divided VCO frequency to the refer ence frequency The PLL output frequency is controlled by a crystal oscillator and the divided ratio N data of a pro grammable divider The PLL circuit using a one chip PLL IC 101 directly
56. nd then applied to varactor diodes D5 of the RX VCO to stabilize the oscillated frequency The lock voltage is also used for the receiver circuit for the bandpass filter center frequency The lock voltage from the loop filter is amplified at the buffer amplifier Q13 and then applied to the CPU IC7 pin 60 The signal is analyzed at the CPU and then applied to the D A convertor IC9 The D A convertor outputs T1 T2 4 signals to RF bandpass filters D12 D15 to sup press harmonic components 4 3 4 VCO CIRCUIT The VCO outputs from Q11 TX and Q10 RX are buffer amplified at Q7 and Q6 and are then sent to the T R switch D3 D4 The receive LO signal is applied to the 1st mixer circuit Q16 through an attenuator and the tramsmit signal is applied to the YGR amplifier Q4 A portion of the VCO output is reapplied to the PLL IC IC1 pin 8 via the buffer amplifier Q6 and low pass filter L18 R53 C89 C91 Buffer Buffer gt to transmitter circuit to 1st mixer circuit D4 Buffer IC1 PLL IC Prescaler to the FM IF IC 55 Si ee f u T ak Si 4 5 PORT ALLOCATIONS 4 5 1 CPU IC7 4 4 POWER SUPPLY CIRCUITS VOLTAGE LINE LINE DESCRIPTION The voltage from the attached battery pack number name Peseription 0 name The same voltage as the HV line battery volt VCC jage which is controlled by the power
57. ontrol signal for the regulator 43 AFON circuit of AF power amplifier High While squelch is open etc O port for data signal from to the 44 ESDA EEPROM 1211 45 Input port for cloning signal 46 Outputs the cloning signal 51 F1 Input ports for the customization key 52 F2 signals Input port for the noise pulse signal for the squelch function Input port for PLL unlock signal 94 High PLL is locked Input port for the transceiver s internal tempereture detection 57 CDEC Input port for CTCSS DTCS signals 58 SDEC port for single tone decode sig 59 RSSI Input port for the RSSI voltage LVIN Input port for the PLL lock voltage CPU IC7 continued number name 0 name BDET Input port for the battery s type detec tion BATV Input port for battely voltage detection 4 5 2 OUTPUT EXPANDER IC IC15 MEDm name Outputs clock shift control signal for RMUT Outputs RX mute control signal MMUT Outputs mute control signal Outputs low pass filter cut off frequen 7 DUSE control signal when DTCS is acti vated 11 5 Outputs T5 regulator control signal Low While transmitting Outputs R5 regulator control signal Low While receiving Outputs S5 regulator control signal Low While power is ON Outputs Narrow Wide of channel 14 NWC spacing control signal Low While Narrow is selected 4 5 3 D A CONVERTOR IC I
58. ontrols the analog switch IC6 pin 13 to cut the AF signal line 4 2 TRANSMITTER CIRCUITS 4 2 1 MICROPHONE AMPLIFIER CIRCUIT The microphone amplifier circuit amplifies audio signals with 6 dB octave pre emphasis characteristics from the micro phone to a level needed for the modulation circuit The AF signals from the microphone are applied to the microphone amplifier circuit IC5c pin 10 after being pass through the high pass filter C186 C187 The amplified AF signals are passed through the low pass filter circuit IC5d pins 13 14 via the mute switch IC6 pins 2 3 4 The fil tered AF signals are applied to the modulator circuit after being passed through the mute switch IC6 pins 8 9 10 4 2 2 MODULATION CIRCUIT The modulation circuit modulates the VCO oscillating signal RF signal using the microphone audio signal The audio signals change the reactance of a diode D6 to modulate an oscillated signal at the TX VCO circuit Q11 The oscillated signal is amplified at the buffer amplifiers Q5 Q7 then applied to the T R switching circuit D3 D4 4 2 3 DRIVE POWER AMPLIFIER CIRCUITS The signal from the VCO circuit passes through the T R switching circuit D3 and is amplified at the YGR Q4 Q3 pre drive Q2 and power amplifier Q1 to obtain 4 W of RF power at 7 2 V DC The amplified signal passes through the antenna switching circuit D1 via the power detector D2 and low pass filter and
59. rating frequency Loosely couple a frequnecy FREQUENCY 470 000 MHz panel counter to the antenna connec tor 470 0000 MHz 469 5500 MHz 467 7250 MHz 446 0062 MHz O TXF 469 550 MHz 467 725 MHz 446 00625 MHz D High Low switch Low e Connect the RF power meter or 50 dummy load to the antenna connector Transmitting OUTPUT Operating frequency Top Connect an RF power meter to POWER 440 000 MHz panel the antenna connector POWER Hi 462 550 MHz 446 00625 MHz High Low switch High Transmitting 2 High Low switch Low2 Transmitting POWER L1 e High Low switch Low1 Transmitting 2 0 W B 1 5 FM Operating frequency Top Connect an FM deviation meter 4 10 kHz DEVIATION 455 000 MHz panel 10 the antenna connector except D Wide 466 050 MHz through the attenuator MOD W 465 138 MHz only e High Low switch Low1 Channel spacing Wide Connect the audio generator to the MIC jack and set as 1 0 kHz 150 mVrms Set the FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector 2 Transmitting Narrow 2 Operating frequency MOD N 455 000 MHz 466 050 MHz 465 138 MHz 446 00625 MHz e Channel spacing Narrow Transmitting DTCS WAVE Operating frequency Top Connect an FM deviation meter FORM 455 000 MHz panel with an oscilloscope to the Setto flat
60. rce DO NOT force any of the variable components Turn them slowly and smoothly DO NOT short any circuits or electronic parts An insulated turning tool MUST be used for all adjustments DO NOT keep power ON for a long time when the transceiver is defective DO NOT transmit power into a signal generator or a sweep generator ALWAYS connect a 40 dB to 50 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when using such test equipment 8 READ the instructions of test equipment thoroughly before connecting equipment to the transceiver PLE Do IS TABLE OF CONTENTS SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION 4 1 4 2 4 3 4 4 4 5 9 1 5 2 5 3 9 1 9 2 9 3 10 10 1 10 2 10 3 10 4 11 12 12 1 12 2 SPECIFICATIONS INSIDE VIEWS DISASSEMBLY INSTRUCTIONS CIRCUIT DESCRIPTION RECEIVER CIRCUNS AREE TRANSMITTER CIRCUITS ep oe er neues POWER SUPPLFEIRCUIT ana dees vete nassen a eee as ann PORT ALLOCATIONS 226248255 RE RI du en tra Pu u guess RE EI W ha ADJUSTMENT PROCEDURES PREPARATION ze duro Dd u 1 PULADIUSIMENT vu u a dee a pash pA upaqa SOFTWARE ADJUSTMENT PARTS LIST MECHANICAL PARTS AND DISASSEMBL
61. stages tunable band pass filter D13 L22 C111 C113 D14 L23 C116 C117 D15 L24 C120 C122 Varactor diodes are employed at the bandpass filters that track the filters and are controlled by the CPU IC7 via the D A convertor IC9 using T1 T4 signals These diodes tune the center frequency of an RF passband for wide bandwidth receiving and good image response rejection 4 1 3 1ST MIXER AND 1ST IF CIRCUITS The 1st mixer circuit converts the received signal into a fixed frequency of the 1st IF signal with a PLL output frequency By changing the PLL frequency only the desired frequency will pass through a crystal filter at the next stage of the 1st mixer 2ND IF AND DEMODULATOR CIRCUITS R98 R99 8 7 filter SQLIN signal to the D A convertor 1 9 pin 23 u AF signal DET R93 T0138 C139 I C154 Active E Limiter RT OR5V The signals from the RF circuit are mixed at the 1st mixer Q16 with a 1st LO signal 393 65 423 65 MHz coming from the VCO circuit to produce a 46 35 MHz 1st IF signal The 1st IF signal is applied to a crystal filter 811 to sup press out of band signals The filtered 1st IF signal is applied to the IF amplifier Q17 then applied to the 2nd mixer circuit IC3 pin 16 4 1 4 2ND IF AND DEMODULATOR CIRCUITS The 2nd mixer circuit converts the 1st IF signal into a 2nd IF signal A double conversion superheterodyne system which converts receive s

IC-F21/F22 series Service Manual

Contents

Download Pdf Manuals

Related Search

Related Contents