Table Of Contents - Icom IC-25H Instruction Manual

Table of Contents

Table Of Contents2
Specifications3
Description4
Multi-Purpose Scanning4
Dual Vfo's4
Outstanding Performance4
Installation5
Unpacking5
Location5
Power Requirements6
Antenna7
Microphone7
Control Functions8
Front Panel8
Rear Panel9
Under The Top Cover11
Operation12
How To Tune12
Preset Frequencies12
Tuning Control12
Transferring Vfo Frequency13
Duplex (Repeater) Operation13
Resetting The Offset Frequency14
Memory Channel Operation15
Scanning Operation15
Memory-Write15
Memory Reading15
Programmed Scan16
Vfo Full Range Scan17
Resuming Scan17
Priority Function18
Receiving19
Transmitting20
Inside Views21
Main Unit Side21
Pll Unit Side21
Circuit Description22
Outline22
Receiver Circuits22
Antenna Switching Circuit22
If Circuit23
Audio Circuit23
Squelch Circuit23
Transmitter Circuits24
Oscillator, Modulation Circuits24
Audio Frequency Circuit24
Mixer Circuit25
Driver Circuit25
Power Amplifier Circuit25
Alc Circuit25
Pll Unit26
Power Supply Circuit26
Local Oscillator Circuit26
Mixer, Low-Pass Filter26
Reference Frequency Generator Circuit27
Phase Detector And Loop Filter Circuit27
Buffer Amplifier Circuit27
Vco Unit27
Driver Unit28
Clock Pulse Generate Circuit28
Scan And Mic Up/Down Control Circuit28
Cpu Control Circuit29
Frequently Control, Display And I/O Circuit32
Troubleshooting33
Block Diagram35