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Motorola GP350 User Manual

Motorola GP350
55 pages
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GP350
Portable Radios
146-174 MHz
438-470 MHz
6880904Z07-O

Table of Contents

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Motorola GP350 Specifications

General IconGeneral
Channels16
Operating Temperature-30°C to +60°C
IP RatingIP54
Frequency RangeVHF: 136-174 MHz, UHF: 403-470 MHz
Power Output1-5 W
BatteryLi-Ion or NiMH
Audio Output0.5 Watts

Summary

Computer Software Copyrights

Airbag Warning Statement

Warning regarding airbag deployment and electronic equipment placement.

Section 4 Theory of Operation

Microcomputer

Details the Motorola 68HC11A8 microcomputer used in the GP350 radios.

Receiver

Describes the receiver circuitry, including front-end modules and filters.

Transmitter

Details the GP350 transmitter components and functions.

Frequency Generation Circuitry

Covers the synthesizer and VCO for frequency generation.

Section 5 Troubleshooting

Troubleshooting Flow Chart for Receiver

Flow chart for diagnosing receiver issues in GP350 radios.

Troubleshooting Flow Chart for Transmitter

Flow chart for diagnosing transmitter issues in GP350 radios.

Troubleshooting Flow Chart for Synthesizer

Flow chart for diagnosing synthesizer issues in GP350 radios.

Troubleshooting Flow Chart for Microprocessor

Flow chart for diagnosing microprocessor issues in GP350 radios.

Troubleshooting Flow Chart for VCO

Flow chart for diagnosing VCO issues in GP350 radios.

Section 6 Component Diagrams and Parts Lists

General and Schematic Notes

General component info, controller differences, and schematic interpretation notes.

Battery Filter Board and Flex Circuit Details

Diagrams and parts lists for battery filter board and flex circuit.

VHF and UHF Transceiver Diagrams

Component location and schematic diagrams for VHF and UHF transceivers.

Mechanical Parts Lists and Views

Parts lists and exploded views for basic mechanical components.

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