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IC-RP4020
ICOM IC-RP4020 Amateur UHF Repeater Manuals
Manuals and User Guides for ICOM IC-RP4020 Amateur UHF Repeater. We have
2
ICOM IC-RP4020 Amateur UHF Repeater manuals available for free PDF download: Service Manual, Instruction Manual
Icom IC-RP4020 Service Manual (56 pages)
UHF Repeater
Brand:
Icom
| Category:
Repeater
| Size: 2 MB
Table of Contents
Introduction
2
Danger
2
Ordering Parts
2
Repair Note
2
Table of Contents
3
Specifications
4
Inside Views
5
Top View
5
Bottom View
5
Circuit Description
6
Receiver Circuits
6
RF Circuit
6
Squelch Circuit
6
Transmitter Circuits
7
Microphone Amplifier Circuit
7
Modulation Circuit
7
Drive Amplifier Circuit
7
APC Circuit
8
PLL Circuits
9
Receiver PLL Circuit
9
Receiver VCO Circuit
9
Receiver Unlock Sensor Circuit
9
Voltage Lines
10
Regulator Circuits
10
Transmitter PLL Circuit
10
Transmitter Reference Oscillator Circuit
10
Other Circuits
11
CTCSS Decoder Circuit
11
CTCSS Encoder Circuit
11
CTCSS Tone Encoder Frequency Table
11
Mechanical Parts and Disassembly
12
Front Parts
12
Accessories
12
Chassis Parts
14
Rear Parts
18
Parts List
19
Adjustment Procedures
28
Preparation before Servicing
28
Required Test Equipment
28
Connection
28
TX PLL Adjustment
29
Receiver Adjustment
29
TX Unit
29
RX Unit
29
Transmitter Adjustment
30
Logic-A Unit
31
Logic Unit
31
Board Layout
34
Front Unit
34
MIC Unit
34
AF Unit
34
RX, R-VCO and T-VCO Units
39
PA and DIN Units
43
REG-A Unit
45
REG-B Unit
45
Block Diagram
46
Voltage Diagram
48
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ICOM IC-RP4020 Instruction Manual (25 pages)
UHF Repeater
Brand:
ICOM
| Category:
Repeater
| Size: 1 MB
Table of Contents
Introduction
2
Precautions
2
Unpacking
2
Table of Contents
3
Features
3
Control Functions
4
Front Panel
4
Rear Panel
5
Installation
6
Rear Panel Connections
6
Backup Battery Terminals
6
Handle Installation
6
Location
7
Antenna System
7
Duplexer
7
Grounding
7
Power
8
In AC Operation
8
In DC Operation
8
Microphone Connector
8
Basic Operation
9
Initial Settings
9
Microphone Function
9
COR Simulate Function
9
Basic Presettings
10
Setting a Frequency
10
Example of Setting N-Data for Receiving
10
Example of Settings N-Data for Transmitting
10
Setting a Tone Frequency
11
Subaudible Tone Decoder Frequency
11
Subaudible Tone Encoder Frequency
12
Functions Presettings and Operation
13
ID Function
13
Automatic ID Function
13
Handl-Up Timer Function
13
ID Timing Chart
14
Writing the ID Call Sign
16
External Control Function
17
Maintenance
18
Repeater Disassembly
18
Fuse Replacement
18
Backup Battery
18
Troubleshooting
19
Inside Views
20
Top View
20
Bottom View
21
Logic-A Unit
22
Specifications
23
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