Equipment information

Icom IC-4GAT Transceiver
Manufacturer
Icom
Model IC-4GAT
Date 1988
Category: Radio, Communication
Group Transceiver
Description UHF FM TRANSCEIVER
Information
                                    

These manuals are available for the above equipment:

Icom -- IC-4GAT -- Service Manual
File name Icom-7454-Manual-Page-1-Picture
Manual Type Service Manual
Pages 58
Size 14.30 Mbytes (14993116 Bytes)
Language english
Revision
Manual-ID/Number A-5002-S
Date 1988
Quality Scanned document, all readable.
Upload date
MD5 ca649b8e99f1afecfd6937e4d624e9ba
Downloads 68 since 06 January 2016
Information
This service manual contains information relative to the
theoretical, physical, mechanical and electrical
characteristics of the IC-4GA/GAT/ GE UHF FM TRANSCEIVER

SECTION 1
SPECIFICATIONS............................................................................................................
1-1
SECTION 2 OUTSIDE AND INSIDE VIEWS
...................................................................................
2-1-4
2-1 FRONT AND SIDE PANELS
........................................................................................
2-1
2-2 TOP PANEL
................................................................................................................
2-2
2-3 FUNCTION
DISPLAY..................................................................................................
2-2
2-4 MAIN
UNIT.................................................................................................................
2-3
2-5 RF UNIT
.....................................................................................................................
2-4
2-6 SPEAKER AND DTMF
UNITS......................................................................................
2-4
SECTION 3 BLOCK
DIAGRAM............................................................................................................
3-1
SECTION 4 CIRCUIT
DESCRIPTION..............................................................................................
4-1-7
4-1 RECEIVER CIRCUITS
..................................................................................................
4-1
4-2 TRANSMITTER
CIRCUITS..........................................................................................
4-2
4-3 PLL CIRCUITS
............................................................................................................
4-3
4-4 POWER SUPPLY CIRCUITS
.......................................................................................
4-4
4-5 OTHER CIRCUITS
.......................................................................................................
4-4
4-6 CPU (IC501) PORTALLOCATION
..............................................................................
4-6
4-7 MATRICES
.................................................................................................................
4-7
SECTION 5 MECHANICAL PARTS AND DISASSEMBLY
..............................................................
5-1-2
SECTION 6 ADJUSTMENT
PROCEDURES...................................................................................
6-1-4
6-1 PLL
ADJUSTMENT.....................................................................................................
6-1
6-2 RECEIVER
ADJUSTMENT..........................................................................................
6-2
6-3 TRANSMITTER
ADJUSTMENT..................................................................................
6-3
SECTION 7 BOARD LAYOUTS
......................................................................................................
7-1-9
7-1 INTERCONNECTION
..................................................................................................
7-1
7-2 LOGIC-A UNIT
...........................................................................................................
7-2
7-3 LOGIC-B
UNIT............................................................................................................
7-3
7-4 RF UNIT
.....................................................................................................................
7-4
7-5 MAIN
UNIT.................................................................................................................
7-6
7-6 OTHER
UNITS............................................................................................................
7-8
SECTION 8 VOLTAGE
DIAGRAM..................................................................................................
8-1-3
8-1 LOGIC UNIT
...............................................................................................................
8-1
8-2 RF UNIT
.....................................................................................................................
8-2
8-3 MAIN
UNIT.................................................................................................................
8-3
SECTION 9 PARTS
LIST................................................................................................................
9-1-5
Icom-7454-Manual-Page-1-Picture
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