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Porta Mobil LBI-3480H
GE Porta Mobil LBI-3480H Manuals
Manuals and User Guides for GE Porta Mobil LBI-3480H. We have
1
GE Porta Mobil LBI-3480H manual available for free PDF download: Maintenance Manual
GE Porta Mobil LBI-3480H Maintenance Manual (178 pages)
Two-Way FM Radio 132-174 MHz
Brand:
GE
| Category:
Two-Way Radio
| Size: 11.83 MB
Table of Contents
Table of Contents
2
Equipment Index
3
Optional Equipment
4
Specifications
5
Power Supplies
6
Description
7
Operation
7
Maintenance
7
Test Procedures
7
Troubleshooting
8
Circuit Analysis
10
Transmitter
10
Power Inputs
10
Voltage Regulator
10
Oscillator
11
Audio Amplifiers and Limiter
11
Buffer and Doublers
11
Drivers
11
Receiver
12
Helical Filter
12
Voltage Regulation
12
RF Amplifier
12
Oscillator/Multiplier
13
1St Mixer/2Nd Oscillator and Mixer
13
LO if Amplifiers
13
Limiters
13
Power Supply
14
Discriminator
14
Audio Amplifiers
14
Squelch
14
Battery Supplies
15
Vehicular Power Supplies
16
Dry Battery Supply
16
Antenna Switching and Power Distribution
17
Regulator Circuit
18
Industrial Power Supply
19
Input Filter
19
Simplified TRC Circuit Diagram
19
Control Units
20
DC to DC Converter
20
Over Voltage Protective Circuit
20
Adjustment of R508 and R513
20
Audio Output Switch
22
10-Watt Audio Amplifier
22
Accessory Jack Option
22
Modulation Level Adjustment
23
PA Power Input
23
Internal View
24
Transmitter Alignment
25
Transmitter Test Procedures
27
Power Measurement
27
Tone Deviation with Channel Guard
28
Service Check
28
Voice Deviation and Symmetry
29
Front End Alignment
30
Complete Receiver Alignment
32
Parts List
34
Schematic Diagrams and PCB Views
37
Production Changes
62
Troubleshooting Procedures
112
Outline Diagram
112
Adjustment
113
Extended Local Control Unit
140
Extended Local Control Cable
141
Extended Local Control Unit Diagram
155
Transmitter-Receiver Top Panel Diagram
158
Quick Checks
160
Audio and Squelch Waveforms
171
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