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Manuals
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Transceiver
IC-A20MKII
Service manual
Icom IC-A20MKII Service Manual
Vhf air band
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Contents
Table of Contents
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Table of Contents
Introduction
Danger
Repair Note
Table of Contents
Specifications
Inside Views
VOR Unit
Main Unit
RF Unit
Circuit Description
Receiver Circuits
Antenna Switching Circuit
RF Circuit
Squelch Circuit
AGC Circuit
AF Circuit
ANL Circuit
VOR Circuit
VOR Circuit Block Diagram
Transmitter Circuits
Microphone Amplifier and ALC Circuits
Modulator Circuit
Pre-Drive and Drive Amplifiers
PLL Circuits
General
Reference Oscillator
VCO Circuit
Power Supply Circuit
CPU Port Allocations
Internal/External Power Switching Circuit
Voltage Lines
Mechanical Parts and Disassembly
Chassis Parts
Accessories
Parts List
Adjustment Procedures
Preparation before Servicing
Required Test Equipment
Connection
PLL Adjustment
Receiver Adjustment
Transmitter Adjustment
Board Layouts
Logic Unit
RF and VCO Units
Block Diagram
Voltage Diagram
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