MIDLAND 200 AM/FM 4 WATT AND AM 1WATT CIRCUIT DESCRIPTION

INTRODUCTION1.MIDLAND 200 AM/FM 40CHANNEL AND THE POWER OUT PUT 4.0 W/1.0W AMFREQUENCY 26.9650MHZ - 27.4050MHZ2.THE FREQUENCIES FOR TRANSMITTER AND RECEIVER LOCAL FREQUENCIES ARE ALL FROMA CRYSTAL (X1) 10.2381MHZ BY MEANS OF A PHASE LOCKED LOOP.THE FIRST LOCAL OSCILLATOR FREQUENCIES ARE 16.26MHZ(CH.1) TO 16.70MHZ(CH.40) FOR RECEIVER AND THE SECOND LOCAL FREQUENCIES OF FIXED AT 10.23810MHZ GENERATE TO IF2 (455KHZ). THE VCO OF PLL OPERATES FREQUENCIES ARE 13.48MHZ(CH.1) TO 13.70MHZ(CH.40) FOR TRANSMIT.

TO PLL IC PIN27

FREQUENCY TX : 13.48MHZ(CH.1) TO 13.70MHZ(CH.40)LOCAL FREQUENCY RX : 16.26MHZ(CH.1) TO 16.70MHZ(CH40)

THE VCO OPERATE FREQUENCY FOR THE RECEIVER IS 16.26MHZ(CH.1) TO 16.70MHZ(CH.40) AS THEFIRST LOCAL OSCILLATOR, INJECTED THROUGH THE BUFFER AMPLIFIER Q22 IN TO THE FIRST MIXERQ3

DESCRIPTIONS OF EACH BLOCK

INTRODUCTIONTHE SYNTHESZER IS IMPLEMENTED WITH THE FOLLOWING, COMPONENTS ARE : PLL IC(IC1), CRYSTAL(X1),Q21,Q22,D19 ARE CLAPP OSCILLATOR CIRCUIT TO OPERATE AS VCO OF THE PLL IC.THE Q20 IS A SWITCHING TO CONNECT OR DISCONNECT THE TUNING CAPACITOR IN THE VCO OSCILLTOR TANK CIRCUIT FOR TRANSMITTER OR RECEIVER.THE Q22 WORKS AS A BUFFER AMP FOR RX LOCAL FREQUENCIES AND TX CARRIER GRNERATING FREQUENCIES.

REFERANCE FREQUENCY(CRYSTAL) THE CRYSTAL X1(10.2381MHZ) AND OTHER COMPONENTS AS IC1 PIN.20(XIN) MAKE A REFERANCEFREQUENCY OSCILLATOR WITH CLOCK DATA FOR INTERFACE.THIS SET IS USED EXTERNAL CLOCK SOURCE BY THE CRYSTAL. THE REFERANCE FREQUENCY(10.2381MHZ) IS ADJUSTED BY C76,C77AND CT1 EXACTLY

VCO THE Q18,Q19 AND SURROUNDING PARTS ARE CONSISTING A CLAPP OSCILLATOR WORKS AS A VCOOF PLL IC WITH APPROPRIATE CONTROL VOLTAGE ON D19 WITH BY ADJUST T7.THE VCO CAN BE OSCILLATE OVER THE REQUIRES RANGE OF 13.48MHZ TO 13.70MHZ.

Q21 VCO

Q22 BUFFER

itrinh

Rettangolo

Sheet1

ELECTRICAL : U P A R T S L ISTMECHANICAL : U ===============S/W VERSION : U MODELCODE & NAME CBM234 MIDLAND 200----- -- - - --- ------------ -------------------- --------------------------- --- SEQ LEVEL REF.P/N PART-NO. NAME & DESCRIPTION ICP----- -- - - --- ------------ -------------------- --------------------------- ---1 2 534-09C-A CBM234CO COVER ASS'Y

3 420-113-6 12-00000-83 SPEAKER YD077A008007P(ID)-R0304K ICP3 611-086 60-00008-01 MACHINE SCREW M2.6x4 ZINC PLATE ICP3 623-344 60-00054-02 TAPPING SCREW 1010 M3X8 BLACK RoHS ZINC ICP3 633-082 60-00064-02 TAP TITE SCREW 1010 M3x6 BLACK RoHS NICKEL ICP3 74-00009-00 COVER BOTTOM SECC T=0.83 74-00010-00 COVER UPPER SECC T=0.83 730-015-A 72-00001-00 HOLDER(SPK) EGI T1 USCOATING ICP3 86-00010-00 E.S.C ABS 94HB BLACK 3 84-00022-00 WINDOW PC CLEAR ICP3 83-00039-00 KNOB SLIDE ABS94HB L380-9001 3 83-00039-01 KNOB SLIDE EU+PL ABS94HB L380-9001 3 83-00040-00 KNOB CONTROL ABS 94HB BLACK ICP3 900-708 90-00006-00 FELT FELT Ø77xT=0.10MM ICP3 901-032 90-00007-00 FELT STICKER 6x110xT=0.5MM FELT STICKER ICP3 84-00023-00 BACK LIGHT KNOB CONTROL PC CLEAR3 83-00041-00 PUSH KNOB ABS 94HB BLACK3 84-00024-00 BACK LIGHT PUSH KNOB UP PC CLEAR3 84-00025-00 BACK LIGHT PUSH KNOB DOW PC CLEAR3 84-00026-00 LENS ABS 94HB BLACK3 86-00011-00 REAR FRONT ABS 94HB BLACK3 81-00062-00 LCD HOUSING ABS 94HB BLACK3 79-00010-00 CLIP LOCK SUS 304 T=0.15MM.

2 2 534-09C-01 CBM234XTL CRYSTAL ASS'Y 3 07-00020-01 CRYSTAL 10.2381MHZ 30PPM 32PF ICP

3 2 534-09F-B CBM234FB FRONT BODY ASS'Y 3 132-704-3 01-00047-01 DISK CERAMIC 270PF NPO271K 50 ICP3 134-708-7X 01-00073-01 DISK CERAMIC 47PF NPO K% 50 ICP3 204-010-1 03-00035-00 TRANSISTOR 2SC2078(F) ICP3 229-075-1 10-00028-01 I.C TDA2003V ICP3 420-705-1Z 20-00002-00 JACK DC TC38-078-01 ICP3 421-046-7 15-00005-01 CONNECTOR SWCN-1601 ICP3 24-00008-00 HARNESS ASS'Y ( CURLED CORD) DC CORD 1450MM. PVC RED/BK Ø2.5MM. CIGARICP3 440-020-4 26-00001-00 MICA MICA 13x15xT=0.3MM ICP3 613-332 60-00028-01 (+)MACHINE SCREW(BH) 3X10 ZN-PLAT ICP3 621-159 60-00038-02 TAPPING SCREW M2.6x8 ZINC PLATE ICP3 623-265 60-00053-02 (+)TAPPING SCREW(BH) 3X6-2S ZN-PLAT ICP3 651-024 62-00004-00 NUT SS41 M3-1S ZN-PLAT ICP3 651-169 62-00006-00 NUT M7xT=2.4 COPPER ICP3 662-305 63-00014-00 WASHER (SPRING) M3 ZN-PLAT ICP3 70-00012-00 MAIN BODY EGI T1.0 U.S COATING ICP3 732-560 72-00008-00 HOLDER(ANT MTG) SPTE T0.3 ICP3 760-704 73-00003-00 HEAT SINK ALP3 13x26xT=2.0 MM. ICP3 750-215 75-00037-00 LUG TERMINAL SS34 18X9XT0.3 NI-P ICP3 76-00070-00 SHIELD PLATE SPTE 0.2MM THICKNESS ICP3 750-039-A 82-00013-00 CORD STOPPER P.P BLK3 853-105 85-00014-00 BUSHING NYLON66+GLASS ICP3 906-998 92-00012-00 COPPER TAPE COPPER TAPE T=0.1x16x36.3 ICP

4 2 534-09M-A CBM234MA MIC ASS'Y 3 130-A75-8Y 01-00074-00 CHIP CERAMIC 0.001UF GRM39 X7R102K 50 ICP3 420-205-9W 13-00000-00 MIC CONDENSER HZ9765502 ICP3 420-349-6X 24-00002-00 CURLED CORD 19/0.10x3C+35/0.10BC CURLED CORD OICP3 421-038-0 15-00004-01 CONNECTOR PLUG SWCN-0901-BNC ICP3 432-003-6Y 32-00001-11 SW PUSH CPS-2210C (77-0 ICP

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3 600-092 60-00003-03 SCREW(SECURING) ABS94HB M6X10(P=1) ICP3 621-089 60-00036-02 TAPING SCREW M2.6x12 NICKEL PLATE ICP3 621-159 60-00038-02 TAPPING SCREW M2.6x8 ZINC PLATE ICP3 623-663 60-00056-02 (+)TAPPING SCREW(BH) 3X10-2S NI-PLAT ICP3 625-007 60-00061-02 (+)TAPPING SCREW(TH) 5X12-1S ZN-PLAT ICP3 642-026 60-00069-02 WOOD SCREW M2.6x14 NICKEL PLATE ICP3 660-138 63-00002-00 WASHER RUBB.&7X&25XT1.5 BLK ICP3 664-320 63-00020-00 WASHER(LOCK"B"TYPE) M3 NI-PLAT ICP3 664-518 63-00022-00 WASHER(LOCK"B"TYPE) M5 ZN-PLAT ICP3 710-408-AA 81-00007-00 UPPER COVER(MIC) ABS 94HB BLK ICP3 710-418-A 81-00010-00 BOTTOM COVER (MIC) ABS 94HB BLK ICP3 720-050 71-00001-00 BRACKET(MIC MTG) SPC 60X35XT1 ICP3 71-00017-00 BRACKET(SET MTG) SECC T=1.6 BLACK-PAINT ICP3 730-024-B 82-00001-00 HOLDER(MIC) PC BLK ICP3 740-390 82-00010-00 LEVER(MIC) PC BLACK ICP3 780-214-A 95-00003-00 NAME PLATE(MIC) ALP3 16 X 47 X T0.4 ICP3 795-955 95-00015-00 NAME PLATE(MIC) PVC 23.9X12.8XT0.4 CLEAR ICP3 830-122 85-00004-00 BEZEL ABS BLK ICP3 830-480 85-00011-00 GRILL CAP ABS 94HB L380-9001 BLK ICP3 870-036 85-00024-00 WIRE CLAMP (CORD) NYLON ICP3 894-674 89-00013-00 CUSHION &22XT4 SPONGE STICKER ICP3 896-069 89-00028-00 RUBBER RUBBER BLACK Ø9.5XØ30XT18.2MM. ICP3 900-212 90-00005-00 FELT FELT 34x36xT=0.10MM ICP3 91B-649 97-00014-00 BOX MIC SW2E 221(W)X70(D)X ICP3 98-00005-02 CELLOPHANE P.P CELLOPHANE 100X100XT0.05MM. ICP3 98-00013-03 CELLOPHANE P.P CELLOPHANE 100X200XT0.05MM. ICP

5 2 534-09M-PA CBM234MPA MAIN PCB AUTO ASS'Y 3 101-006-2Y 01-00004-11 ELECT CAPACITOR 1UF 50V 20% 5X11 ICP3 101-012-7Z 01-00006-11 ELECT CAPACITOR 10UF 16V 20% 5X11 ICP3 101-117-9 01-00010-11 ELECT CAPACITOR 1000UF 16V 20% 10X16 ICP3 101-122-3 01-00012-11 ELECT CAPACITOR 100UF 16V 20% 6.3X11 ICP3 102-210-4Z 01-00018-11 ELECT CAPACITOR 22UF 16V 20% 5X11 ICP3 102-207-2X 01-00017-11 ELECT CAPACITOR 2.2UF 50V 20% 5X11 ICP3 102-299-5 01-00022-11 ELECT CAPACITOR 220UF 16V 20% 6.3X11 ICP3 103-313-9Y 01-00027-11 ELECT CAPACITOR 33UF 16V 20% 5X11 ICP3 104-813-9X 01-00036-11 ELECT CAPACITOR 470UF 16V 20% 8X12 ICP3 100-405-4X 01-00003-11 ELECT CAPACITOR 0.47UF 50V 20% 5X11 ICP3 104-707-7Y 01-00029-11 ELECT CAPACITOR 4.7UF 50V 20% 5X11 ICP3 104-771-4X 01-00034-11 ELECT CAPACITOR 47UF 16V 20% 5X11 ICP3 245-015-3X 05-00001-31 DIODE RECTIFIER 1N4004 ICP

6 2 534-09M-PM CBM234MPM MAIN PCB MANUAL ASS'3 002-109-6Z 00-00109-00 FILM RESISTOR 1 1/ 8W 5% ST ICP3 030-101-7Z 00-00101-02 FILM RESISTOR 100 1/ 2W 5% ST MINI ICP3 019-150-0 00-00150-81 METAL OXIDE RESISTOR 15 2W 5% ST ICP3 00-00229-81 METAL OXIDE RESISTOR 2.2 Ohm 2W 5% ICP3 018-330-1X 00-00330-80 METAL OXIDE RESISTOR 33 1W 5% ST ICP3 030-472-2Z 00-00472-02 FILM RESISTOR 4.7K 1/ 2W 5% ST MINI ICP3 018-221-6X 00-00221-80 METAL OXIDE RESISTOR 220 1W 5% ST ICP3 00-005R6-81 METAL OXIDE RESISTOR 5.6 2W 5% (MOR02WJ056JA10) ICP3 202-124-1 03-00026-00 TRANSISTOR KTC1006 ICP3 224-063-5 10-00027-01 I.C LC7185-8750 ICP3 10-00034-01 I.C LA1150N ICP3 242-029-1 05-00002-11 DIODE VARICAP KDV251M ICP3 270-006-9V 08-00001-01 CERAMIC FILTER LT455HTU ICP3 270-010-2X 08-00004-01 FILTER CERAMIC LT10.7MJ-M ICP3 02-00012-01 TRANSFORMER EI-24 ICP3 300-116-5Z 02-00004-01 TRANSFORMER (MOD.) EI-19 ICP3 310-289-1Z 02-00000-31 COIL AXIAL AL0307-2R2K ICP3 310-316-6 02-00003-31 COIL AXIAL 0.47UH:LAL03TBR47K ICP3 310-407-1 02-00006-21 COIL SPRING 5X0.6X13.5T:R ICP3 02-00067-21 COIL SPRING 6.0X0.9X8.5T:R ICP

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3 02-00068-21 COIL SPRING 4.0X0.9X8.5T:R ICP3 02-00069-21 COIL MOLD COIL MOLD BALANCE 8.5T ICP3 02-00061-81 COIL IFT RF COIL RX 83A ICP3 02-00062-81 COIL IFT RF COIL RX 7252 ICP3 02-00063-81 COIL IFT RF COIL 7255 ICP3 02-00064-81 COIL IFT AM COIL RX 7224 ICP3 02-00065-81 COIL IFT AM COIL RX 7223 ICP3 02-00066-81 COIL IFT VCO COIL 7046 ICP3 02-00067-81 COIL IFT RF COIL 7014 ICP3 02-00068-81 COIL IFT FM COIL 5002 ICP3 202-066-2 03-00019-00 TRANSISTOR KTB1367 ICP3 241-264-3 05-00012-01 ZENER DIODE 1N5235B (6.8V) ICP3 241-263-2 05-00011-01 ZENER DIODE 1N5237B (8.2V) ICP3 244-004-8 05-00001-21 DIODE GE 1N60P ICP

7 2 CBM234MPS MAIN PCB SMD ASS'Y 3 00-001R0-15 CHIP RESISTOR 1 1/16W 5% T 1608 ICP3 05B-100-2Z 00-00100-15 CHIP RESISTOR 10 1/16W 5% T 1608 ICP3 05B-101-3Z 00-00101-15 CHIP RESISTOR 100 1/16W 5% T 1608 ICP3 05B-102-4Z 00-00102-15 CHIP RESISTOR 1K 1/16W 5% T 1608 ICP3 05B-103-5Z 00-00103-15 CHIP RESISTOR 10K 1/16W 5% T 1608 ICP

3 05B-104-6Z 00-00104-15 CHIP RESISTOR 100K 1/16W 5% T 1608 ICP3 05B-105-7Z 00-00105-15 CHIP RESISTOR 1M 1/16W 5% T 1608 ICP3 05B-122-2Z 00-00122-15 CHIP RESISTOR 1.2K 1/16W 5% T 1608 ICP3 05B-124-4Z 00-00124-15 CHIP RESISTOR 120K 1/16W 5% T 1608 ICP3 05B-123-3Z 00-00123-15 CHIP RESISTOR 12K 1/16W 5% T 1608 ICP3 05B-150-7Z 00-00150-15 CHIP RESISTOR 15 1/16W 5% T 1608 ICP3 05B-152-9Z 00-00152-15 CHIP RESISTOR 1.5K 1/16W 5% T 1608 ICP3 05B-153-0Z 00-00153-15 CHIP RESISTOR 15K 1/16W 5% T 1608 ICP3 05B-183-7Z 00-00183-15 CHIP RESISTOR 18K 1/16W 5% T 1608 ICP3 05B-182-6Z 00-00182-15 CHIP RESISTOR 1.8K 1/16W 5% T 1608 ICP3 05B-184-8Z 00-00184-15 CHIP RESISTOR 180K 1/16W 5% T 1608 ICP3 05B-222-9Z 00-00222-15 CHIP RESISTOR 2.2K 1/16W 5% T 1608 ICP3 05B-223-0Z 00-00223-15 CHIP RESISTOR 22K 1/16W 5% T 1608 ICP3 05B-220-7Z 00-00220-15 CHIP RESISTOR 22 1/16W 5% T 1608 ICP3 05B-221-8Z 00-00221-15 CHIP RESISTOR 220 1/16W 5% T 1608 ICP

3 05B-224-1Z 00-00224-15 CHIP RESISTOR 220K 1/16W 5% T 1608 ICP3 05B-272-4Z 00-00272-15 CHIP RESISTOR 2.7K 1/16W 5% T 1608 ICP3 05B-275-7Z 00-00275-15 CHIP RESISTOR 2.7M 1/16W 5% 1608 ICP3 05B-331-4Z 00-00331-15 CHIP RESISTOR 330 1/16W 5% T 1608 ICP3 05B-332-5Z 00-00332-15 CHIP RESISTOR 3.3K 1/16W 5% T 1608 ICP3 05B-333-6Z 00-00333-15 CHIP RESISTOR 33K 1/16W 5% T 1608 ICP3 05B-393-0Z 00-00393-15 CHIP RESISTOR 39K 1/16W 5% T 1608 ICP3 05B-470-6Z 00-00470-15 CHIP RESISTOR 47 1/16W 5% T 1608 ICP3 05B-471-7Z 00-00471-15 CHIP RESISTOR 470 1/16W 5% T 1608 ICP3 05B-472-8Z 00-00472-15 CHIP RESISTOR 4.7K 1/16W 5% T 1608 ICP3 05B-473-9Z 00-00473-15 CHIP RESISTOR 47K 1/16W 5% T 1608 ICP3 05B-474-0Z 00-00474-15 CHIP RESISTOR 470K 1/16W 5% T 1608 ICP3 05B-561-5Z 00-00561-15 CHIP RESISTOR 560 1/16W 5% T 1608 ICP3 05B-562-6Z 00-00562-15 CHIP RESISTOR 5.6K 1/16W 5% T 1608 ICP3 05B-681-0Z 00-00681-15 CHIP RESISTOR 680 1/16W 5% T 1608 ICP3 05B-682-1Z 00-00682-15 CHIP RESISTOR 6.8K 1/16W 5% T 1608 ICP3 05B-683-2Z 00-00683-15 CHIP RESISTOR 68K 1/16W 5% T 1608 ICP3 05B-823-2Z 00-00823-15 CHIP RESISTOR 82K 1/16W 5% T 1608 ICP3 05B-822-1Z 00-00822-15 CHIP RESISTOR 8.2K 1/16W 5% T 1608 ICP3 05B-821-0Z 00-00821-15 CHIP RESISTOR 820 1/16W 5% T 1608 ICP3 130-A73-6Y 01-00072-00 CHIP CERAMIC 0.01UF GRM39 X7R103K 25 ICP

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3 130-A75-8Y 01-00074-00 CHIP CERAMIC 0.001UF GRM39 X7R102K 50 ICP3 130-B09-9Y 01-00077-00 CHIP CERAMIC 0.1UF GRM39 X7R104K 16 ICP3 130-A01-7Y 01-00059-00 CHIP CERAMIC 0.015UF GRM39 X7R153K 25 ICP3 130-261-9Y 01-00005-00 CHIP CERAMIC 0.022UF GRM39 X7R223K 50 ICP

3 130-249-9 01-00003-00 CHIP CERAMIC 0.0022UF GRM39 X7R222J 50 ICP3 130-340-7Y 01-00020-00 CHIP CERAMIC 0.0033UF GRM39 X7R332K 50 ICP3 01-00300-00 CHIP CERAMIC 0.039UF GRM39 Y5V 393Z 50V ICP3 130-432-7Y 01-00030-00 CHIP CERAMIC 0.0047UF GRM39 X7R472K 50 ICP3 130-440-4Y 01-00031-00 CHIP CERAMIC 0.047UF GRM39 Y5V473Z 25 ICP3 130-630-9Y 01-00055-00 CHIP CERAMIC 0.068UF GRM39 X7R683K 16 ICP3 131-091-7Y 01-00092-00 CHIP CERAMIC 1PF GRM39 COG010C 50 ICP3 131-093-9Y 01-00095-00 CHIP CERAMIC 100PF GRM39 COG101J 50 ICP3 131-240-5Y 01-00112-00 CHIP CERAMIC 12PF GRM39 COG120J 50 ICP3 131-241-6Y 01-00114-00 CHIP CERAMIC 120PF GRM39 COG121J 50 ICP3 131-564-8Y 01-00129-00 CHIP CERAMIC 15PF GRM39 COG150J 50 ICP3 131-575-8Y 01-00130-00 CHIP CERAMIC 150PF GRM39 COG151J 50 ICP3 132-024-2Y 01-00147-00 CHIP CERAMIC 2PF GRM39 COG020C 50 ICP3 132-025-3Y 01-00148-00 CHIP CERAMIC 20PF GRM39 COG200J 50 ICP3 132-260-8Y 01-00159-00 CHIP CERAMIC 220PF GRM39 COG221J 50 ICP3 132-734-0Y 01-00174-00 CHIP CERAMIC 27PF GRM39 COG270J 50 ICP3 133-349-1Y 01-00193-00 CHIP CERAMIC 33PF GRM39 COG330J 50 ICP3 133-930-5 01-00201-00 CHIP CERAMIC 39PF GRM39 COG390J 50 ICP3 133-350-1Y 01-00194-00 CHIP CERAMIC 330PF GRM39 COG331J 50 ICP3 134-012-1Y 01-00212-00 CHIP CERAMIC 4PF GRM39 COG040C 50 ICP3 134-756-0Y 01-00221-00 CHIP CERAMIC 4.7PF GRM39 COG4R7C 50 ICP3 134-757-1Y 01-00222-00 CHIP CERAMIC 47PF GRM39 COG470J 50 ICP3 135-632-6Y 01-00243-00 CHIP CERAMIC 56PF GRM39 COG560J 50 ICP3 136-014-3Y 01-00251-00 CHIP CERAMIC 6PF GRM39 COG060D 50 ICP3 136-839-2Y 01-00260-00 CHIP CERAMIC 68PF GRM39 COG680J 50 ICP3 137-013-7Y 01-00269-00 CHIP CERAMIC 7PF GRM39 COG070D 50 ICP3 138-011-0Y 01-00275-00 CHIP CERAMIC 8PF GRM39 COG080D 50 ICP3 139-005-0Y 01-00286-00 CHIP CERAMIC 9PF GRM39 COG090D 50 ICP3 172-021-1Y 01-00000-40 CHIP TRIMMER 20PF STC3M20-T1 ICP3 202-082-6 03-00044-01 TRANSISTOR KTA1504ST1(G) ICP3 202-098-1 03-00052-01 BRT KRC102S ICP3 202-105-4 03-00056-01 TRANSISTOR KTA1505SY ICP3 202-112-0 03-00058-01 TRANSISTOR KTC3875S(GR) ICP

3 202-106-5 03-00057-01 TRANSISTOR KTA1504SY ICP3 202-153-7 03-00063-01 TRANSISTOR 2SC5345SY ICP3 04-00016-01 FET 2SK211 GR ICP3 222-027-3 10-00060-00 I.C OP AMP KIA4558F ICP3 243-051-5 05-00003-40 DIODE SI CHIP KDS184S ICP3 243-049-4 05-00002-40 DIODE SI CHIP KDS226 ICP3 17-02472-10 POTENTIOMETER CHIP VG039NCHXTB472-PBF ICP3 33-00027-00 P.C.B ASS'Y 134.3 X 196.7 X 1.6 FR4 1/1 ICP

4 18-00037-02 P.C.B MAIN 114 X 146.8 X 1.6 FR4 1/1 4 18-00114-03 P.C.B SUB ESC 116 X 32 X 1.6 FR4 1/14 18-00115-03 P.C.B SUB VOLUME 36.5 X 13.5 X 1.6 FR4 1/1

8 2 534-09P-A CBM234PA PACKING ASS'Y 3 93-00073-00 OWNER'S MANUAL ART & WOODFREE PAPER 148X210 MMICP3 93-00074-00 RTTE BOOKLET WOODFREE PAPER 148X210MM. ICP3 94-00008-01 WARRANTY CARD (ITALY) WOOD FREE PAPER 70X92MM. ICP3 94-00013-01 WARRANTY CARD (SPAIN) WOOD FREE PAPER 83X160MM. ICP3 94-00015-01 WARRANTY CARD (UK) WOOD FREE PAPER 106X149MM. ICP3 95B-172 96-00085-00 LABEL SERIAL ARTPAPER 30X40 3 96-00169-00 NAME LABEL POLYESTER 21X44XT=0.05MM. ICP3 97-00142-00 TRAY BOX PULP MOLD N30&C70 160Wx232Lx52H MM.3 97-00155-00 INNER BOX SW1E 236(W)X 232(D)X58(H) 3 97-00156-00 OUT BOX DW BC 376(W)X240(D)X236(H)

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3 98-00013-04 CELLOPHANE P.P CELLOPHANE 150X300XT0.05MM.3 98-00013-05 CELLOPHANE P.P CELLOPHANE 250X350XT0.05MM. ICP

9 2 534-09S-A CBM234SA SUB PCB ASS'Y 3 06-00020-01 LED LAMP 523ID ICP3 06-00005-10 LED LAMP WS1608BSC-08K ICP3 06-00021-01 LED LAMP 523GD ICP3 06-00006-51 LED DISPLAY (BLUE) 3203BB3 421-559-4A 15-00034-01 CONNECTOR SCN-16-4 PCB(R) ICP3 429-335-4 16-00009-00 FLAT WIRE CABLE 7PIN 88MM 2.5PITCH 3 436-059-7Z 32-00003-21 SW TACT TM115AP ICP3 32-00005-01 SLIDE SWITCH SSA-23D01-G4-TA(2P3T) ICP3 32-00006-01 SLIDE SWITCH SSA-22D02-G4-TA(2P2T) ICP3 450-659-6 17-0B103-01 VR SJ093V-15SK B10K ICP3 450-657-4X 17-0A103-01 VR RD915S-2A1-A103-0H48 ICP3 95-00026-00 LED FILM PC CLEAR 15.5x15 T=0.2MM. ICP

10 2 534-09W-CA CBM234WCA WIRE COVER ASS'Y 3 427-045-6 16-00026-07 WIRE 1007 AWG 26(7/0.16) YEL ICP3 427-046-7 16-00027-07 WIRE 1007 AWG 26(7/0.16) GRN ICP

11 2 534-09W-MA CBM234WMA WIRE MIC ASS'Y 3 427-045-6 16-00026-07 WIRE 1007 AWG 26(7/0.16) YEL ICP3 427-046-7 16-00027-07 WIRE 1007 AWG 26(7/0.16) GRN ICP

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--------- --- ---- ------ ------------------------------- Q'TY UT KON OPT REFERENCE-NO--------- --- ---- ------ -------------------------------

1.000 EA 1.000 EA SUB SP1(SPEAKER)4.000 EA SUB ESCUTCHEON & MAIN BODY:4 3.000 EA SUB SPK.MTG:38.000 EA SUB COVER & MAIN BODY MTG 1.000 EA SUB1.000 EA SUB3.000 EA SUB SPK. MTG:31.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB2.000 EA SUB1.000 EA SUB AIR VENT (SPK)2.000 EA SUB COVER MTG(REAR)2.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB7.000 EA SUB1.000 EA 1.000 EA MAN X11.000 EA 1.000 EA SUB C116A1.000 EA SUB C311.000 EA SUB Q261.000 EA SUB IC31.000 EA MAN JK1(EXT)1.000 EA SUB JK4(ANT)1.000 EA SUB1.000 EA SUB TR 2SC20783.000 EA SUB TR MTG:2 , IC MTG:1 8.000 EA SUB SUB PCB MTG:8 4.000 EA SUB MAIN PCB:4 3.000 EA SUB TR MTG:2 , IC MTG:1 2.000 EA SUB FOR VOL , SQ3.000 EA SUB TR MTG:2 , IC MTG:1 1.000 EA SUB1.000 EA SUB1.000 EA SUB2.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB TR 2SC20782.000 EA SUB1.000 EA 1.000 EA SUB C411.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB SW5

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2.000 EA SUB4.000 EA SUB3.000 EA SUB2.000 EA SUB3.000 EA SUB1.000 EA SUB2.000 EA SUB2.000 EA SUB3.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA SUB1.000 EA FIN2.000 EA FIN ACCESSORY MIC:1,ACCESSORY SCREW:11.000 EA FIN MICROPHONE:11.000 EA 2.000 EA AUT C146.1475.000 EA AUT C2.142.150.151.CA11.000 EA AUT C482.000 EA AUT C69.705.000 EA AUT C33A.34.59.131.2021.000 EA AUT C181.000 EA AUT C524.000 EA AUT C40.47.67.682.000 EA AUT C32.492.000 EA AUT C83.842.000 EA AUT C28.423.000 EA AUT C33.62.662.000 EA AUT D11.121.000 EA1.000 EA MAN R1271.000 EA MAN R941.000 EA MAN R421.000 EA MAN R1521.000 EA MAN R431.000 EA MAN R1292.000 EA MAN R128.2101.000 EA MAN R721.000 EA MAN Q251.000 EA MAN IC11.000 EA MAN IC42.000 EA MAN D19.251.000 EA MAN CF21.000 EA MAN CF11.000 EA MAN T61.000 EA MAN L92.000 EA MAN L1.21.000 EA MAN L41.000 EA MAN L62.000 EA MAN L7.8

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Sheet1

1.000 EA MAN L51.000 EA MAN L31.000 EA MAN T11.000 EA MAN T23.000 EA MAN T3.8.91.000 EA MAN T41.000 EA MAN T51.000 EA MAN T71.000 EA MAN T101.000 EA MAN T111.000 EA MAN Q351.000 EA MAN D182.000 EA MAN D5.152.000 EA MAN D6.201.000 EA 1.000 EA SMD R693.000 EA SMD R4.68.1253.000 EA SMD R6.118.123

10.000 EA SMD R13.29.30.35.75.92.97.112.124.17623.000 EA SMD R3.7.12.22.52.54.71.74.83.93.100.

SMD 102.111.115.119.156.157.158.161. SMD 164.165.166.178

10.000 EA SMD R11.60.61.62.89.103.150.168.169.1751.000 EA SMD R1313.000 EA SMD R2.17.471.000 EA SMD R1092.000 EA SMD R46.551.000 EA SMD R1261.000 EA SMD R405.000 EA SMD R33.41.64.66.822.000 EA SMD R56.1722.000 EA SMD R78.801.000 EA SMD R1066.000 EA SMD R31.73.76.77.153.1627.000 EA SMD R16.53.67.84.85.180.1811.000 EA SMD R39

13.000 EA SMD R34.63.95.122.133.134.135.136.137. SMD 138.139.155.159

6.000 EA SMD R19.24.27.32.36.1673.000 EA SMD R15.108.1201.000 EA SMD R482.000 EA SMD R8.1175.000 EA SMD R96.116.140.141.1544.000 EA SMD R38.44.49.581.000 EA SMD R201.000 EA SMD R1516.000 EA SMD R18.25.101.107.130.1327.000 EA SMD R14.45.81.90.105.114.1774.000 EA SMD R26.65.86.2172.000 EA SMD R70.1632.000 EA SMD R1.53.000 EA SMD R88.104.1217.000 EA SMD R9.10.23.87.113.182.1831.000 EA SMD R215.000 EA SMD R37.99.143.173.1743.000 EA SMD R28.57.593.000 EA SMD R50.91.981.000 EA SMD R110

26.000 EA SMD C1.3.7.9.12.13.15.16.19.21.30.57.64. SMD 81.90.95.98.99.100.104.118.132.134. SMD 149.167.175

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Sheet1

9.000 EA SMD C14.17.36.38.73.136.139.143.2031.000 EA SMD C502.000 EA SMD C43.45

14.000 EA SMD C20.22.23.26.27.35.37.39.60.65. SMD 105.109.117.137

1.000 EA SMD C253.000 EA SMD C54.55.562.000 EA SMD C144.145

10.000 EA SMD C44.46.63.71.74.78.91.92.120.1935.000 EA SMD C11.75.138.141.1481.000 EA SMD C2241.000 EA SMD C725.000 EA SMD C10.80.97.108.1331.000 EA SMD C62.000 EA SMD C88.1121.000 EA SMD C612.000 EA SMD C86.1131.000 EA SMD C81.000 EA SMD C584.000 EA SMD C79.103.115.1531.000 EA SMD C961.000 EA SMD C1542.000 EA SMD C5.871.000 EA SMD C1061.000 EA SMD C941.000 EA SMD C1522.000 EA SMD C41A.1142.000 EA SMD C77.931.000 EA SMD C534.000 EA SMD C24.107.110.1351.000 EA SMD C1021.000 EA SMD C761.000 EA SMD C852.000 EA SMD TC1.21.000 EA SMD Q382.000 EA SMD Q33.364.000 EA SMD Q16.27.28.34

16.000 EA SMD Q8.9.10.11.13.14.15.17.20.21. SMD 22.23.24.29.30.31

3.000 EA SMD Q1.12.329.000 EA SMD Q2.3.4.5.6.7.18.19.371.000 EA SMD Q391.000 EA SMD IC2

13.000 EA SMD D1.2.3.4.7.8.9.10.13.14.16.17.231.000 EA SMD D214.000 EA SMD RV1.2.3.41.000 EA SMD1.000 EA SMD1.000 EA SMD1.000 EA SMD1.000 EA 1.000 EA FIN1.000 EA FIN1.000 EA FIN1.000 EA FIN1.000 EA FIN1.000 EA FIN1.000 EA FIN1.000 EA FIN1.000 EA FIN0.167 EA FIN

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1.000 EA FIN FOR MANUAL1.000 EA FIN FOR UNIT1.000 EA1.000 EA MAN LD3(TX)6.000 EA SMD LD4.5.6.7.8.91.000 EA MAN LD2(RX)1.000 EA MAN LD1(DISPLAY)1.000 EA MAN MIC PLUG JK31.000 EA MAN CON12.000 EA MAN UP/DOWN SW3.41.000 EA MAN SW11.000 EA MAN SW21.000 EA MAN VR1(SQ)1.000 EA MAN VR2(VOL)1.000 EA FIN1.000 EA 0.160 ME SUB PCB SP(+)---SP(+) 0.5:0.5 0.160 ME SUB PCB SP(-)---SP(-) 0.5:0.5 1.000 EA 0.060 ME SUB PUSH SW ---CONDENSER MIC 0.5:0.5 0.060 ME SUB PUSH SW --- CONDENSER MIC 0.5:0.5

Page 10

PLL

IC1

1'ST MIXQ3

2'ND MIXQ4

IF AMPQ5,Q6

AM DETD2

ANLD4

SW AMPQ10,11

RF AMPQ2

SQ AMPIC2

2'nd IFFILTER CF-2

1'st IFFILTER CF-1

CH SELECTORUP/DOW S/W

LED DISPLAY DRIVERQ27,28

RX/TX SWD6

FILTERQ18,Q19

DOUBLERAMPQ23

SW AMPQ17

SW AMPQ16

REGULATORFOR IC1

D18

VCO AMPQ21

SW AMPQ13,D14

AMC COMPARATOR

Q12

SW AMPQ30,31

SW AMPQ32

REGULATORD15,Q15

MIC AMPAUDIO AMP

IC2

VOLUME

10.238MHZ

MICROPHONE

VR1 SQUELCH

EXT JACK

SPEAKER

RF PREDRIVER

AMPQ24

PROTECTORQ1

FM DETIC4

AGC AMPQ7

AUDIO AMP MODIC3

LIMITD21,22

AMC ATTQ14

SW AMPQ9

AF AMPQ29

RF POWER

AMPQ26

RF DRIVER

AMPQ25

BUFFERAMPQ22

RX/TX SWQ20

ANTENNA

RX B+

TX B+

FM B+

CB

SW2

FM AM

SW1

SUPPLY13.8V.

SW ON/OFF(VR2)

SW1 AM

FM

VR2

SW1

FM

AM

2

'ND

MIX

1'ST MIX

FM B+

COMPANY: THAIRADIO

TITLE: BLOCK DIAGRAM

SHEET 1 OF 1CODE: MIDLAND-200

BLACK LIGHT

APC REGURATE

Q35

NBD6,D20,Q39

EXPLODE VIEW

terdsak p.

BODY VEIW

17,SEP,08

MIDLANDMODEL ALAN 200

Thai radio Co.,Ltd.787 M.1, Banlane, A. Bang Pa-InAyutthaya 13160Tel. 035-351-787-9,Fax.035-351-790

SCALE:1:0.5

SIZE DWG. NO.

AREV.

MATERIAL

FINISH

XXXXX

--

DO NOT SCALE DRAWING

NAME DATE

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

SHEET 1 OF 2WEIGHT:

COMMENTS:

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL

ANGULAR: MACH BEND

TWO PLACE DECIMAL

THREE PLACE DECIMAL

NAME&TITLE

CUSTOMER

ITEM NO. PART NUMBER & PART NAME QTY.

1 79-00010-00 CLIP LOCK 5

2 71-00017-00 BRACKET(SET MTG) 1

3 70-00012-00 BODY MAIN 1

4 74-00010-00 COVER UPPER 1

5 74-00009-00 COVER BOTTOM 1

6 18-00028-02 P.C.B MAIN 1

7 15-00005-01 CH-239(A) SW-1229 1

9 20-00002-00 JACK DC 1

10 82-00013-00 CORD STOPPER 1

11 60-00008-01 M2.6x4 ZINC PLATE 4

12 26-00001-00 MICA 1

13 85-00014-00 BUSHING 1

14 62-00004-00 SS41 M3-1S ZN-PLAT 2

16 12-00000-83 SPEAKER 1

17 72-00001-00 HOLDER(SPK) 3

18 60-00064-02 (M3x6) TAP TITE 8

19 63-00002-00 RUBB.&7X&25XT1.5BLK

2

20 60-00003-03 SCREW(SECURING) 2

21 90-00006-00 &77XT0.3 FELT 1

22 90-00007-00 6X110XT0.5 FELT STIC. 2

23 03-00035-00 2SC2078(F) 1

24 71-00001-00 BRACKET(MIC MTG) 1

25 63-00020-00 WASHER LOCK M3 2

26 60-00056-02 (+)TAPPINGSCREW(BH)

2

27 63-00022-00 WASHER LOCK M5 2

28 24-00008-00 DC car 1

29 front explod 1

30 76-00070-00 sheild plate 1

31 60-00053-02 (M3x6) Tapping screw 4

32 60-00028-01 (M3x10) Machinescrew

2

33 60-00054-02 (M3x8) 3

34 10-00028-01 IC TDA2003H 5 LEG 1

35 60-00061-02 5X12-1S ZN-PLAT 2

219

20

6

3130

28

9

10

8

23

14

1

15

32

24

26

35

33

16

5

21

22

29

3

7

11

17

4

18

27

34

explode view

terdsak p.

FRONT VIEW

17,sep,08

MIDLANDMODEL ALAN 200

Thai radio Co.,Ltd.787 M.1, Banlane, A. Bang Pa-InAyutthaya 13160Tel. 035-351-787-9,Fax.035-351-790

SCALE:1:2

SIZE DWG. NO.

AREV.

MATERIAL

FINISH--

DO NOT SCALE DRAWINGAPPLICATION

USED ONNEXT ASSY

NAME DATE

DRAWN

CHECKED

ENG APPR.

MFG APPR.

Q.A.

SHEET 2 OF 2WEIGHT:

COMMENTS:

DIMENSIONS ARE IN INCHES

TOLERANCES:

FRACTIONAL

ANGULAR: MACH BEND

TWO PLACE DECIMAL

THREE PLACE DECIMAL

NAME&TITLE

CUSTOMER

112 18 19 20

22

14

15

13

8

17

16

121972356

4

10

3

21

2625

ITEMNO.

PART NUMBER & PART NAME QTY.

1 86-00010-00 E.S.C 1

2 15-00034-01 mic plug 1

3 Nut washer mic 1

4 Backup of Push knob ASSY 1

5 84-00023-00 backlight knobcontrol

2

6 83-00040-00 Knob control 2

7 84-00026-00 Lens 1

8 86-00011-00 Rear front 1

9 81-00062-00 LCD Housing 1

10 84-00022-00 WINDOW 1

11 83-00039-00 SLIDE KNOB 2

12 06-00003-51 led display 1

13 17-0A103-01 VR (ON_OFF) 1

14 17-0B103-01 VR SQ 1

15 18-00102-03 PCB sub vol 1

16 18-00103-03 PCB SUP ESC 1

17 06-00001-01 LED L-314GD 4

18 06-00020-01 523ID TX 1

19 32-00006-01 slide sw 2_2 1

20 32-00005-01 slide sw 3_2 1

21 60-00038-02 M2.6x8 ZINC PLATE 7

22 16-00009-00 flat wire 7 core 1

23 62-00006-00 Nut sw m7 2

25 06-00021-01 523GD RX 1

26 32-00003-21 TM115AP SW TACT 2

PHASE DETECTOR AND VCO CONTROLTHE PHASE DETECTOR IS A DIGITAL PHASE COMPARATOR WHICH COMPARES THE PHASE OF THE REFERANCE SIGNAL WITH PROGRAMMABLE DIVIDER OUTPUT SQUARE WAVESAND DEVELOPSA SERIES OF PLUSE WHOSE DC LEVEL DEPENDS ON THE PHASE ERROR OF EACH SIGNAL.

THE PHASE DETECTOR PLUSE OUTPUT IS FED TO AN ACTIVE LOW PASS FILTE R, AND FED TOVARIABLE CAPACITOR DIODE D19 CONTROL THE VCO FREQUENCY.

SWITCHING OF TUNNING CAPACITOR IN VCOTHE VCO CIRCUIT MUST USE WITH A WIDE RANGE OF FREQUENCIES 13.48MHZ TO 13.70MHZ FOR TRANSMITTER AND 16.26MHZ(CH.1) TO 16.70MHZ(CH.40) FOR RECEIVER.TO COMPLY ABOVE RANGE OF VCO, THE TUNNING CAPACITANCE SHOULD SWITCHED FOR TRANSMISSION OR RECEPTION.THE TUNNING CIRCUIT VCO IS WORKING AS A RECEIVER AND TRANSMITTING OF BECOMES TURN ON AND BECOMES OFF BY T7 AND D19 CAPACITANCE OF MAKE TUNNING FUNCTION.

RECEIVER LOCAL OSCILLATOR OUTPUTS1ST MIXER : THE OUTPUT SIGNAL OF Q22 IS INJECTED TO THE SOURCES OF 1ST MIXER Q3 IN THE1ST IF MIXER SECTION.2ND MIXER : THE OUTPUT OF 10.2381MHZ OSCILLATOR CIRCUIT WITH XOUT IS INJECTED IN TO THE Q4

DESCRIPTION OF OTHER CIRCUIT

TRANSMITTER

RF AMLIFICATION THE OUTPUT OF BUFFER AMP Q22 IS FED THROUGH TUNNING TO DOUBLER AMP Q23 TO DOUBLERCOIL T8,T9 TO THE BASE OF PRE DRIVER AMP Q24. THE PRE DRIVER AMP OUTPUT SIGNAL FED THROUGH TO DRIVER AMP BASE Q25, FED THROUGH TO POWER AMP Q26 TO THE ANTENNA.

CIRCUIT FOR SUPPRESSION OF SPURIOUS RADITIONTHE TUNNING CIRCUIT BETWEEN THE OUTPUT OF FINAL AMP Q26 AND ANTENNA, ANTENNA TYPE"LPF TYPE" NETWORK L9,L7,L8,C114,C115,C116A,C113,C115 SERVES AS A SPURIOUS RADIATIONSUPPRESSOR.THIS NETWORK ALSO SPURIOUS RADIATION SUPPRESSOR.THIS NETWORK ALSO SERVES TO MATCH THE IMPEDANCE BETWEEN TX POWER TRANSISTOR Q26AND ANTENNA.

MAXIMUM MODULATION CONTROLMODULATION SIGNALS ARE FILTERED WITH RC NETWORK AND GOES TO THE PRE MIC AMP IC(IC2-B)TO AUDIO AMP IC(IC3) TO MAKE NOMINAL SIGNAL LEVEL TO ACHIEVE WANTED MODULATION.TO CONTROL INCOMING AUDIO SIGNAL BY AMC CIRCUIT.THE AMC ARE Q16,Q14,RV4, THAT IS CIRCUIT CONTROL MAXIMUM MODULATION CAPABILITY AND MAXIMUM MODULATION LIMITTING.

RECEIVER A. RF AMP Q2 AMPLIFY RF SIGNAL FROM ANTENNA,AND THEN THE AMPLIFIED RF SIGNAL IS FEDTHROUGH MIXER 1ST WITH BY SOURCE ALSO VCO FREQUENCY LOWER 10.695MHZ THAN THE FREQUENCY OF EACH CHANNEL IS SUPPLIED TO MIXER. B.THE SOURCE OF 10.695MHZ FREQUENCY IS FED THROUGH CF1 TO 2'ND MIXER. C.THE 455KHZ FREQUENCY SIGNAL IS FED THROUGH CF2 TO IF AMP. D.THE Q5,Q6 IS IF AMP AND D2 DETECTOR DIODE.AUDIO SIGNAL RECOVER BY THAT DIODE.THE AUDIO SIGNAL IS FED THROUGH TO AUDIO AMP IC(IC3) FOR DRIVER SPEAKER.