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MAIN Unit

FT-250R Technical Supplement

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Содержание FT-250R

Страница 1: ...rs ICs etc or leaded components only While we believe the information in this manual to be correct VERTEX STANDARD assumes no liability for damage that may occur as a result of typographical or other...

Страница 2: ...x 108 5 x 26 5 mm w o knob antenna Weight approx 11 5 Oz 325g w FNB 83 Antenna and BeltClip RECEIVER Circuit type Double conversion superheterodyne Intermediate Frequency 1st 21 7 MHz 2nd 450 kHz Sens...

Страница 3: ...RA0210600 RUBBER PACKING RA1111800 WINDOW RA1111900 VOLUME KNOB RA1112000 ENCODER KNOB RA0210300 RUBBER KNOB RA0211100 INTER CONNECTOR RA0211200 INTER CONNECTOR G6090137 LCD RA010690A TERMINAL PLATE L...

Страница 4: ...4 FT 250R Technical Supplement Exploded View Miscellaneous Parts Note...

Страница 5: ...5 Block Diagram FT 250R Technical Supplement...

Страница 6: ...6 Block Diagram FT 250R Technical Supplement Note...

Страница 7: ...the buffer amplifi er Q1043 2SC4617 it is then passed through the de emphasis network consisting of capacitor C1057 and re sistor R1208 to a high pass filter consisting of capacitors C1058 C1059 C106...

Страница 8: ...emains Low disabling the gate voltages of driv er amplifier Q1009 2SK3074 and final amplifier Q1008 RD07MVS1A thereby disabling the transmitter Spurious Suppression Generation of spurious products by...

Страница 9: ...quency is at the actual transmit frequency rather than offset for IFs as in the receiving case Also the VCO is modulated by the speech audio applied to D1010 HSC277 as described previously Receive and...

Страница 10: ...gnment determined to be abso lutely necessary Required Test Equipment The following test equipment and familiarity with its use is necessary for complete realignment Correction of prob lems caused by...

Страница 11: ...he antenna jack select 146 MHz key the transmitter and adjust TC1001 on the Main Unit if necessary so the counter frequency is within 100 Hz of 146 MHz TX SECTION ALIGNMENT SETUP RX SECTION ALIGNMENT...

Страница 12: ...l Alignment System Startup Procedure To begin set the transceiver to the 146 0000 MHz and turn the transceiver off Next press and hold in the PTT MONI and the LAMP switches hold them in while turning...

Страница 13: ...hieve a 0 7 kHz 0 05 kHz reading narrow 0 5 kHz on the deviation meter Transmitter Total Deviation Select 146 MHz and adjust the AF generator attenua tor for 80 mV output at 1 kHz to the microphone ja...

Страница 14: ...14 FT 250R Technical Supplement Alignment Note...

Страница 15: ...6 V 1 2 V 1 1 V 0 V 3 2 V TONE SQL 67 0 Hz 151 4 Hz 3 1 V 156 7 Hz 250 3 Hz 0 V DCS 3 1 V Wide 0 V Narrow 0 6 V CHG OFF 7 2 V ON 6 4 V CHG OFF 7 0 V ON 5 7 V CHG OFF 7 0 V ON 0 V 7 0 V 6 8 V 6 7 V 7 0...

Страница 16: ...16 MAIN Unit FT 250R Technical Supplement...

Страница 17: ...DA221 K D1007 1017 1019 DAN222 N D1025 1026 2SB1132 BA Q1063 1078 DTA144EE 16 Q1052 2SA1774 FR Q1068 M3826AEFGP Q1035 2SC4081 Q1015 1016 1037 1038 1041 1042 1044 1056 2SC4400 Q1014 TA31136FN Q1017 2SB...

Страница 18: ...8 AA1101F D1024 02CZ2 0X 2 0X D1029 2SD1664 DA Q1057 2SC4154 Q1001 1002 1006 1007 1025 1031 1034 1036 1040 1055 1059 1061 1063 1065 2SC5006 Q1011 2SC4617 BR Q1043 2SC5226 Q1010 2SC5374 Q1018 1019 1022...

Страница 19: ...82C1H330JA01D K22174223 1 B c1 C 1035 CHIP CAP 33pF 50V CH GRM1882C1H330JA01D K22174223 1 B c1 C 1036 CHIP CAP 0 001uF 50V B GRM188B11H102KA01D K22174821 1 B d1 C 1037 CHIP CAP 0 001uF 50V B GRM188B11...

Страница 20: ...HIP CAP 15pF 50V CH GRM1882C1H150JA01D K22174215 1 B d2 C 1109 CHIP CAP 18pF 50V CH GRM1882C1H180JA01D K22174217 1 B d2 C 1110 CHIP CAP 0 001uF 50V B GRM188B11H102KA01D K22174821 1 B d2 C 1111 CHIP CA...

Страница 21: ...CAP 0 001uF 50V B GRM188B11H102KA01D K22174821 1 A G3 C 1190 CHIP CAP 0 001uF 50V B GRM188B11H102KA01D K22174821 1 B a4 C 1191 CHIP CAP 0 001uF 50V B GRM188B11H102KA01D K22174821 1 B b3 C 1192 CHIP CA...

Страница 22: ...2070660 1 A B1 D 1022 LED AA1111C TR G2070660 1 A A3 D 1023 LED AA1111C TR G2070660 1 A B3 D 1024 LED AA1101F TR G2070658 1 B a3 D 1025 DIODE DAN222 TL G2070174 1 A C3 D 1026 DIODE DAN222 TL G2070174...

Страница 23: ...G3117748R 1 B e3 Q 1033 TRANSISTOR DTA114TE TL G3070264 1 B f2 Q 1034 TRANSISTOR 2SC4081 T106 R G3340818R 1 B f1 Q 1035 IC M3826AEFGP 1 A E2 Q 1036 TRANSISTOR 2SC4081 T106 R G3340818R 1 B d3 Q 1037 TR...

Страница 24: ...16W 5 RMC1 16S 473JTH J24189045 1 B c2 R 1042 CHIP RES 330 1 16W 5 RMC1 16S 331JTH J24189019 1 B c1 R 1043 CHIP RES 33 1 16W 5 RMC1 16S 330JTH J24189007 1 B d1 R 1044 CHIP RES 330 1 16W 5 RMC1 16S 331...

Страница 25: ...CHIP RES 470 1 16W 5 RMC1 16S 471JTH J24189021 1 B e2 R 1114 CHIP RES 1k 1 16W 5 RMC1 16S 102JTH J24189025 1 B e2 R 1115 CHIP RES 1k 1 16W 5 RMC1 16S 102JTH J24189025 1 B e2 R 1116 CHIP RES 0 1 16W 5...

Страница 26: ...1 16W 5 RMC1 16S 474JTH J24189057 1 A F1 R 1190 CHIP RES 100k 1 16W 0 5 RR0510R 104 D J24189167 1 A E2 R 1191 CHIP RES 22k 1 16W 5 RMC1 16S 223JTH J24189041 1 A D3 R 1192 CHIP RES 470k 1 16W 5 RMC1 1...

Страница 27: ...65 CHIP RES 1k 1 16W 5 RMC1 16S 102JTH J24189025 1 A D2 R 1266 CHIP RES 1k 1 16W 5 RMC1 16S 102JTH J24189025 1 B c3 R 1267 CHIP RES 1k 1 16W 5 RMC1 16S 102JTH J24189025 1 A D2 R 1268 CHIP RES 1k 1 16W...

Страница 28: ...JTH J24189033 1 B f3 R 1338 CHIP RES 22k 1 16W 5 RMC1 16S 223JTH J24189041 1 B f3 R 1339 CHIP RES 3 9k 1 16W 5 RMC1 16S 392JTH J24189032 1 B f3 R 1340 CHIP RES 100k 1 16W 5 RMC1 16S 104JTH J24189049 1...

Страница 29: ...Unit FT 250R Technical Supplement HOLDER RA0210100 1 TERMINAL PLATE RA0210700 1 SHEET RA023330A 1 LIGHT GUIDE RA020950A 1 Parts List REF DESCRIPTION VALUE V W TOL MFR S DESIG VXSTD P N VERS LOT SIDE...

Страница 30: ...30 MAIN Unit FT 250R Technical Supplement Note...

Страница 31: ...uF 50V B K22174817 1 C 3002 CHIP CAP 0 0047uF 50V B K22174817 1 D 3001 LED G2070706 1 R 3001 CHIP RES 100ohm 1 16W 5 J24189013 1 S 3001 ROTARY ENCODER Q9000739 1 VR3001 POT J60800236 1 VR3001 POT J608...

Страница 32: ...12 1 A R 5001 CHIP RES 18k 1 16W 5 RMC1 16 183JATP J24185183 1 A DESCRIPTION VALUE V W TOL YAESU P N MFR S DESIG VERS REF LOT SIDE SW UNIT PCB with Components CB4883001 Printed Circuit Board FR002650B...

Страница 33: ...Copyright 2009 VERTEX STANDARD CO LTD All rights reserved No portion of this manual may be reproduced without the permission of VERTEX STANDARD CO LTD...

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