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Icom Manuals
Transceiver
IC-25A
Instruction manual
Icom IC-25A Instruction Manual
144mhz fm transceiver
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Also See for IC-25A
:
Maintenance manual
(77 pages)
,
Instruction manual
(40 pages)
,
Maintenance manual
(77 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Specifications
Description
Installation
Unpacking
Location
Mounting Bracket Installation
Power Requirements
Angle Adjustment
Optional Installation
Antenna
Microphone
External Speaker
Control Functions
Front Panel Facilities
Rear Panel Facilities
Under the Top Cover
Vfo/Memory Channel Switch and VFO Switch
Operation
How to Tune
Preset Frequencies
Transfering VFO Frequency
Duplex (Repeater) Operation
Resetting the Offset Frequency
Memory Channel Operation
Memory-Write - Programming the Memory Channels
Memory Reading
Scanning Operation/Memory Scan
Programmed Scan
VFO Full Range Scan
Resuming Scan
Priority Function
Receiving
Transmitting
Inside View
Main Unit Side View
PLL Unit Side View
Circuit Description
Receiver Circuits
Antenna Switching Circuit
RF Circuit
IF Circuit
Audio Circuit
Squelch Circuit
Transmitter Circuits
16.9Mhz Oscillator, Modulation Circuits
Audio Frequency Circuit
Af/Modulation Circuit
Mixer Circuit
Driver Circuit
Power Amplifier Circuit
ALC Circuit/Metering Circuit
PLL (Phase Locked Loop) Unit
Power Supply Circuit/Local Oscillator Circuit
Mixer, Low Pass Filter and Amplifier Circuit
Programmable Divider Circuit
Reference Frequency Generator Circuit
Phase Detector and Loop Filter Circuit
Buffer Amplifier Circuit
VCO Unit
Driver Unit
Clock Pulse Generate Circuit
Scan and MIC Up/Down Control Circuit
CPU Control Circuit
Frequency Control, Display and I/O Circuit
Driver Circuit Chart
Troubleshooting
Block Diagram
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Microphone
2
Block Diagram
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See also:
Maintenance Manual
,
Instruction Manual
Table of
Contents
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