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Icom IC-F4GS, Servise Manual

The Icom IC-F4GS is a professional two-way radio, offering reliable communication for various industries. To ensure optimal usage, it is important to have the Servise Manual readily available. Download the free manual from manualshive.com and gain valuable insights on operating and maintaining this exceptional product.

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SERVICE

MANUAL

UHF FM TRANSCEIVERS

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Summary of Contents for IC-F4GS

Page 1: ...SERVICE MANUAL UHF FM TRANSCEIVERS ...

Page 2: ... F4GT MAIN UNIT 1 pieces 8810009510 Screw BT M2 x 4 NI ZU IC F4GS Chassis 10 pieces Addresses are provided on the inside back cover for your convenience 1 Make sure a problem is internal before disassembling the transceiver 2 DO NOT open the transceiver until the transceiver is disconnected from its power source 3 DO NOT force any of the variable components Turn them slowly and smoothly 4 DO NOT s...

Page 3: ...OWER SUPPLY CIRCUITS 4 3 4 5 CPU PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 4 5 3 SOFTWARE ADJUSTMENT 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS SECTION 10 BC 137 OPTIONAL DESKTOP CHARGER INFORMATION 10 1 PARTS LIST 10 1 10 2 DISASSEMBLY INFORMATION 10 1 10 3 VOL...

Page 4: ... Maximum frequency deviation 2 5 kHz Spurious emissions 73 dBc typical Adjacent channel power 60 dB typical Transmitter audio distortion Less than 3 at 1 kHz 40 deviation Limitting charact of modulator 70 100 of max deviation Ext microphone connector 3 conductor 2 5 d mm 1 10 2 2 kΩ RECEIVER Receive system Double conversion superheterodyne system Intermediate frequencies 1st 46 35 MHz 2nd 450 kHz ...

Page 5: ...7030000500 S RESISTOR MCR10EZHJ 10 kΩ 1 R6 7030000190 S RESISTOR MCR10EZHJ 27 Ω 270 1 R7 7030001740 S RESISTOR MCR10EZHJ 2 kΩ 1 R8 7030001740 S RESISTOR MCR10EZHJ 2 kΩ 1 R9 7030000590 S RESISTOR MCR10EZHJ 56 kΩ 1 R10 7030000500 S RESISTOR MCR10EZHJ 10 kΩ 1 R11 7030000380 S RESISTOR MCR10EZHJ 1 kΩ 1 C1 4030001150 S CERAMIC GRM40 F 104Z 25PT 1 C2 4030001150 S CERAMIC GRM40 F 104Z 25PT 1 C3 403000115...

Page 6: ...6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan S 13610IZ CD 2000 Icom Inc ...

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