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Icom Manuals
Transceiver
IC-281H
Service manual
Icom IC-281H Service Manual
144 mhz fm transceiver
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Also See for IC-281H
:
Instruction manual
(61 pages)
,
Service manual
(42 pages)
,
Instruction manual
(61 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Repair Notes
Table of Contents
Specifications
Main Unit View
Circuit Description
Receiver Circuits
Antenna Switching Circuit (Main Unit)
RF and 1St Mixer Circuits/Af Circuit (Main Unit)
Transmitter Circuits
Squelch Circuit (Main and Logic Units)
Microphone Amplifier (Logic Unit)
Modulation Circuit - VCO-A Board
PLL Circuits
Power Supply Circuits
Voltage Lines
Port Allocation
CPU - Logic Unit IC6
Adjustment Procedures
PLL Adjustment
Receiver Adjustment
Transmitter Adjustment
Parts List
Mechanical Parts and Disassembly
Chassis Parts
Accessories
Exploded View
Board Layouts
Logic Unit PC Boards
Main Unit PC Boards
Optional Units
UT-66 Voice Synthesizer Unit Diagram and PC Board
UT-85 Tone Squelch Unit Diagram and PC Boards
Block Diagram
Voltage Diagrams
Logic Unit Voltage Diagram
Main Unit Voltage Diagram
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1
Repair Notes
2
Specifications
3
Main Unit View
4
Microphone Amplifier (Logic Unit)
5
Voltage Diagrams
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Instruction Manual
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