GM300
Mobile Radios
136-162 MHz
146-174 MHz
403-433 MHz
438-470 MHz
465-495 MHz
490-520 MHz
Service Manual
6880902Z32-A
Table of Contents
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
How to Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Other Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Service Policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Ordering Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Model Charts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
SpeciÞcations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
Section 1
Disassembly/Re-assembly
Radio Disassembly and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
To Remove RF Chassis Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
To Remove the PA Heatsink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
To Remove the RF Circuit Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
To Remove the Logic Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
To Remove the PA Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
To Re-Assemble the Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Recommended Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Board Replacement and Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Section 2
Theory of Operation
RF Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
VHF Receiver Front End, 146-174 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
UHF Receiver Front End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Receiver Back End . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Frequency Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Charge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Loop Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Reference Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
VCOÕs and Buffers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Logic Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
DC Distribution and Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Microcomputer and Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Microcomputer Start-Up Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Microcomputer Operation-Expanded Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Reading or Writing in Memory-Expanded Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Programmable I/OÕs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Receiver Audio. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Voice Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Data Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Transmitter Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Voice Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Data Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Motorola,. All Rights Reserved
Printed In U.S.A. 1997 68 No.
i
Table of Contents Name of Manual
Transmitter Power Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Control Line Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
Power Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
RF Power AmpliÞers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
1-10 Watt VHF Power AmpliÞer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
10-25 Watt VHF Power AmpliÞer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
25-45 Watt VHF Power AmpliÞer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
1-10 Watt UHF Power AmpliÞer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
10-25 Watt UHF Power AmpliÞer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
25-35/40 Watt UHF Power AmpliÞers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Front Panel Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Display Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Display Board (8/16 Freq Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Vol/Mic Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Front Panel Filter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Section 3
Jumper-Selectable Options
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Jumper Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Section 4
Non-Field Servicable Components
Operation of the Reference Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Non-Field Servicable Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Schematic Diagrams & Circuit Board Details
Schematic Diagram for HLD8265A and HLD88266A VHF RF Boards, 136-162 MHz . . . . . . . . . . . . . . . . . . . . . .1
Circuit Board Details for HLD8265A and HLD8266A VHF RF Boards, 136-162 MHz . . . . . . . . . . . . . . . . . . . . .2
Schematic Diagram for HLD8029A and HLD8031A VHF RF Boards, 146-174 MHz . . . . . . . . . . . . . . . . . . . . . . .3
Circuit Board Details for HLD8029A and HLD8031A VHF RF Boards, 146-174 MHz . . . . . . . . . . . . . . . . . . . . .4
Schematic Diagram for HLE8229A and HLE8230A UHF RF Boards, 403-433 MHz . . . . . . . . . . . . . . . . . . . . . . .5
Circuit Board Details for HLE8229A and HLE8230A UHF RF Boards, 403-433 MHz . . . . . . . . . . . . . . . . . . . . . .6
Schematic Diagram for HLE8300A and HLE8301A UHF RF Boards, 438-470 MHz . . . . . . . . . . . . . . . . . . . . . . .7
Circuit Board Details for HLE8300A and HLE8301A UHF RF Boards, 438-470 MHz . . . . . . . . . . . . . . . . . . . . . .8
Schematic Diagram for HLE8263A and HLE8264A UHF RF Boards, 465-490 MHz . . . . . . . . . . . . . . . . . . . . . . .9
Circuit Board Details for HLE8263A and HLE8264A UHF RF Boards, 465-490 MHz . . . . . . . . . . . . . . . . . . . . .10
Schematic Diagram for HLE8227A and HLE8228A UHF RF Boards, 490-520 MHz . . . . . . . . . . . . . . . . . . . . . .11
Circuit Board Details for HLE8227A and HLE8228A UHF RF Boards, 490-520 MHz . . . . . . . . . . . . . . . . . . . . .12
Schematic Diagram for HLE8074A Masked Logic Board (2-Layer) (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . .13
Schematic Diagram for HLE8074A Masked Logic Board (2-Layer) (Sheet 2 of 2) . . . . . . . . . . . . . . . . . . . . . . . .14
Circuit Board Details for HLN8074A Masked Logic Board (2-Layer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Schematic Diagram for HLN8070A Expanded Logic Board (4-Layer) (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . .16
Schematic Diagram for HLN8070A Expanded Logic Board (4-Layer) (Sheet 2 of 2) . . . . . . . . . . . . . . . . . . . . . .17
Circuit Board Details for HLN8070A Expanded Logic Board (4-Layer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Circuit Board Details and Schematic for HLD8293A
VHF Power Amplifier, 136-162 MHz, 10-25 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Circuit Board Details and Schematic For HLD8299A
VHF Power Amplifier, 146-174 MHz, 1-10 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Circuit Board Details and Schematic For HLD8033A
VHF Power Amplifier, 146-174 MHz, 10-25 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Circuit Board Details and Schematic for HLD8287A
VHF Power Amplifier, 146-174 MHz, 25-45 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
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68 No. March, 1997
Name of Manual Table of Contents
Circuit Board Details and Schematic for HLE8385A
UHF Power Amplifier, 403-433 MHz, 1-10 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Circuit Board Details and Schematic for HLE8275A
UHF Power Amplifier, 403-433 MHz, 25-40 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Circuit Board Details and Schematic for HLE8267A
UHF Power Amplifier, 438-470 MHz, 1-10 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Circuit Board Details and Schematic for HLE8034A
UHF Power Amplifier, 438-470 MHz, 10-25 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Circuit Board Details, and Schematic for HLE8271A
UHF Power Amplifier, 438-470 MHz, 25-40 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Circuit Board Details and Schematic for HLE8284A
UHF Power Amplifier, 465-495 MHz, 25-40 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Circuit Board Details and Schematic for HLE8269A
UHF Power Amplifier, 490-520 MHz, 25-35 Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Circuit Board Detail, Schematic and Parts List for Front Panel Filter Board (01-80704Y83) . . . . . . . . . . . . . . . .30
Schematic Diagram and Parts List for HLN8075A Display Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Circuit Board Details for HLN8075A Display Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Circuit Board Detail, Schematic and Parts List for HLN8071A Volume/Microphone Board . . . . . . . . . . . . . .33
Exploded View, Schematic, Circuit Board Detail and Parts List for Microphone . . . . . . . . . . . . . . . . . . . . . . . .34
Exploded Mechanical View and Parts List for Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Parts Lists for RF, Logic, & PA Boards
RF Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PA Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
March, 1997 68 No.
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68 No. March, 1997
lForeword
Scope of Manual
Scope of Manual
This manual is intended for use by experienced technicians familiar with similar types of equipment. It contains all service information required for the equipment described and is current as of the printing date.
Changes which occur after the printing date are incorporated by instruction manual revision. These revisions are added to the manuals as the engineering
changes are incorporated into the equipment.
How to Use This Manual
This manual contains introductory material such as
model charts, accessories, and speciÞcations, as well as
four sections that deal with speciÞc service aspects of
the GM300. Refer to the Table of Contents for a general
overview of the manual, or to the ÒOverviewÓ paragraph in each section for a speciÞc overview of the
information in that section.
Other Documentation
Table 1 lists other documentation for the GM300
Mobile Radios.
tiÞcation number for all chassis, kits, and components.
If you do not know a part number, include with your
order the number of the chassis or kit which contains
the part, and a detailed description of the desired component. If a Motorola part number is identiÞed on a
parts list, you should be able to order the part through
Motorola Parts. If only a generic part is listed, the part
is not normally available through Motorola. If no parts
list is shown, generally, no user serviceable parts are
available for the kit.
Technical Support
Radius Product Services
Hwy. 34 West
Mt. Pleasant, IA 52641 USA
1-800-356-1520
319-385-5395 (International)
Radius 30-Day Warranty
Radius Repair Depot
Attention: Warranty Return
1000 W. Washington Street
Mt. Pleasant, IA 52641 USA
1-800-356-1520
319-385-5395 (International)
Table 1.
Information Location
Basic Use of GM300 GM300 OwnerÕs Manual (6880902Z09)
Programming GM300 RSS Basic Manual (6880902Z36)
GM300 RSS RapidCall Manual (6880902Z64)
Technical Support
To obtain technical support, you may call MotorolaÕs
Radius Product Services. When you call, we ask that
you have ready the model and serial numbers of the
respective radio or its parts.
Service Policy
If malfunctions occur within 30 days that cannot be
resolved over the phone with Radius Product Services,
a defective major component should be returned. You
must obtain authorization from Radius Product Services before returning the component.
Ordering Replacement Parts
You can order additional components and some piece
parts directly through your Radius price pages. When
ordering replacement parts, include the complete iden-
Radius Major Component Repair
Radius Repair Depot
1000 W. Washington Street
Mt. Pleasant, IA 52641 USA
Motorola Parts
Worldwide System and
Aftermarket Products Division
Attention: Order Processing
1313 E. Algonquin Road
Schaumburg, IL 60196
Worldwide System and
Aftermarket Products Division
Attention: International Order Processing
1313 E. Algonquin Road
Schaumburg, IL 60196
Customer Service
1-800-422-4210
1-708-538-8198 (FAX)
Parts IdentiÞcation
1-708-538-0021
1-708-538-8194
March, 1997 68 No.
iii
Foreword
Model Charts
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25/30 kHz
GM300 12.5 kHz
8
FREQ
GM300 20/25/30 kHz
8
16
16
VHF Mobile Radio
10 — 25 Watts RF Power
GM300
136 — 162 MHz
DESCRIPTION
RF Board 20/25/30 kHz
Logic Board Masked
RF Board 12.5 kHz
Logic Board, Expanded
Vol/Mic Board
Display Board 8/16 Frequency
Front Panel Hardware, 8/16 Freq
PA Board
PA Hardware
Chassis Hardware
MODEL
M33GMC00D1A
M33GMC20D1A
M33GMC09C1A
M33GMC29C1A
ITEM
HLD8266_
HLD8265_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLD8293_
Item Description
X HUD3834_ Chassis, 12.5 kHz (Masked) X X X
X HUD3833_ Chassis, 20/25/30 kHz (Masked) X X X
X HUD3832_ Chassis, 12.5 kHz (Expanded) X X X
X HUD3831_ Chassis, 20/25/30 kHz (Expanded) X X X
XXXXHLD3850_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8295_
HLN8076_
iv
68 No. March, 1997
Name of Manual Foreword
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25/30 kHz
GM300 12.5 kHz
GM300 20/25/30 kHz
GM300
DESCRIPTION
VHF Mobile Radio
8
FREQ
8
16
16
146 — 174 MHz
1 — 10 Watts RF Power
RF Board 20/25/30 kHz
RF Board 12.5 kHz
Display Board 8/16 Frequency
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
PA Board
Front Panel Hardware, 8/16 Freq
PA Hardware
Chassis Hardware
MODEL
M03GMC09C2A
M03GMC00D2A
M03GMC20D2A
M03GMC29C2A
ITEM
HLD8029_
HLD8031_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLD8299_
Item Description
X HUD3794_ Chassis, 12.5 kHz (Masked) X X X
X HUD3792_ Chassis, 20/25/30 kHz (Masked) X X X
X HUD3793_ Chassis, 12.5 kHz (Expanded) X X X
X HUD3791_ Chassis, 20/25/30 kHz (Expanded) X X X
XXXXHLD3852_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Panel Lens 8 Channel
X X HLN8123_ Panel Lens 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8274_
HLN8076_
March, 1997 68 No.
Foreword Name of Manual
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25/30 kHz
GM300 12.5 kHz
GM300 20/25/30 kHz
GM300
DESCRIPTION
VHF Mobile Radio
8
FREQ
8
16
16
146 — 174 MHz
10 — 25 Watts RF Power
RF Board 20/25/30 kHz
RF Board 12.5 kHz
Display Board 8/16 Frequency
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
PA Board
Front Panel Hardware, 8/16 Freq
PA Hardware
Chassis Hardware
MODEL
M33GMC00D2A
M33GMC20D2A
M33GMC09C2A
M33GMC29C2A
ITEM
HLD8029_
HLD8031_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLD8033_
Item Description
X HUD3409_ Chassis, 12.5 kHz (Masked) X X X
X HUD3410_ Chassis, 20/25/30 kHz (Masked) X X X
X HUD3570_ Chassis, 12.5 kHz (Expanded) X X X
X HUD3571_ Chassis, 20/25/30 kHz (Expanded) X X X
XXXXHLD3502_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8069_
HLN8076_
vi
68 No. March, 1997
Name of Manual Foreword
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25/30 kHz
GM300 12.5 kHz
GM300 20/25/30 kHz
GM300 20/25/30 kHz
GM300
DESCRIPTION
VHF Mobile Radio
8
FREQ
8
16
16
16
146 — 174 MHz
25 — 45 Watts RF Power
RF Board 20/25/30 kHz
RF Board 20/25/30 kHz
RF Board 12.5 kHz
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
Display Board 8/16 Frequency
Front Panel Hardware, 8/16 Freq
PA Board
PA Hardware
Chassis Hardware
MODEL
M43GMC00D2A
M43GMC20D2A
M43GMC09C2A
M43GMR29C2A
M43GMC29C2A
ITEM
HLD8029_
HLD8031_
HLD9002_
HLN8074_
HLN8071_
HLN8070_
HLN8075_
HLN8072_
HLD8287_
Item Description
X HUD3931_ Chassis, 12.5 kHz (Masked) X X X
X HUD3790_ Chassis, 20/25/30 kHz (Masked) X X X
X HUD3930_ Chassis, 12.5 kHz (Expanded) X X X
X HUD3823_ Chassis, 20/25/30 kHz (Expanded) X X X
X HUD3123_ Chassis, 20/25/30 kHz (Expanded) X X X
XXXXXHLD3848_ PA Kit (part of chassis) X X
XXXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X X HHN8170_ Housing Kit, expanded
XXXXXHLN8120_ Nameplate
X X X HLN8121_ ROM Kit
XXXXXHKN4137_ Power Cable
XXXXXHMN3413_ Microphone w/hangup clip
XXXXXHLN5189_ Installation Kit
XXXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X X 6880902Z41 Operator Card 16 Channel
HLN8289_
HLN8076_
March, 1997 68 No.
vii
Foreword Name of Manual
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25 kHz
GM300 12.5 kHz
GM300 20/25 kHz
GM300
DESCRIPTION
UHF Mobile Radio
8
FREQ
8
16
16
403 — 433 MHz
1 — 10 Watts RF Power
RF Board 20/25 kHz
RF Board 12.5 kHz
Display Board 8/16 Frequency
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
PA Board
Front Panel Hardware, 8/16 Freq
PA Hardware
Chassis Hardware
MODEL
M04GMC00D1A
M04GMC20D1A
M04GMC09C1A
M04GMC29C1A
ITEM
HLE8301_
HLE8300_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLE8385_
Item Description
X HUE3944_ Chassis, 12.5 kHz (Masked) X X X
X HUE3945_ Chassis, 20/25 kHz (Masked) X X X
X HUE3946_ Chassis, 12.5 kHz (Expanded) X X X
X HUE3947_ Chassis, 20/25 kHz (Expanded) X X X
XXXXHLE3929_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8386_
HLN8076_
viii
68 No. March, 1997
Name of Manual Foreword
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25 kHz
GM300 12.5 kHz
GM300 20/25 kHz
GM300
DESCRIPTION
UHF Mobile Radio
8
FREQ
8
16
16
403 — 433 MHz
25 — 40 Watts RF Power
RF Board 20/25 kHz
RF Board 12.5 kHz
Display Board 8/16 Frequency
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
PA Board
Front Panel Hardware, 8/16 Freq
PA Hardware
Chassis Hardware
MODEL
M44GMC00D1A
M44GMC20D1A
M44GMC09C1A
M44GMC29C1A
ITEM
HLE8230_
HLE8229_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLE8275_
Item Description
X HUE3812_ Chassis, 12.5 kHz (Masked) X X X
X HUE3811_ Chassis, 20/25 kHz (Masked) X X X
X HUE3810_ Chassis, 12.5 kHz (Expanded) X X X
X HUE3809_ Chassis, 20/25 kHz (Expanded) X X X
XXXXHLE3853_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8277_
HLN8076_
March, 1997 68 No. ix
Foreword Name of Manual
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25 kHz
GM300 12.5 kHz
GM300 20/25 kHz
GM300
DESCRIPTION
UHF Mobile Radio
8
FREQ
8
16
16
438 — 470 MHz
1 — 10 Watts RF Power
RF Board 20/25 kHz
RF Board 12.5 kHz
Display Board 8/16 Frequency
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
PA Board
Front Panel Hardware, 8/16 Freq
PA Hardware
Chassis Hardware
MODEL
M04GMC00D3A
M04GMC20D3A
M04GMC09C3A
M04GMC29C3A
ITEM
HLE8301_
HLE8300_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLE8267_
Item Description
X HUE3816_ Chassis, 12.5 kHz (Masked) X X X
X HUE3815_ Chassis, 20/25 kHz (Masked) X X X
X HUE3814_ Chassis, 12.5 kHz (Expanded) X X X
X HUE3813_ Chassis, 20/25 kHz (Expanded) X X X
XXXXHLE3770_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8268_
HLN8076_
x 68 No. March, 1997
Name of Manual Foreword
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25 kHz
GM300 12.5 kHz
GM300 20/25 kHz
GM300
DESCRIPTION
UHF Mobile Radio
8
FREQ
8
16
16
438 — 470 MHz
10 — 25 Watts RF Power
RF Board 20/25 kHz
RF Board 12.5 kHz
Display Board 8/16 Frequency
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
PA Board
Front Panel Hardware, 8/16 Freq
PA Hardware
Chassis Hardware
MODEL
M34GMC00D3A
M34GMC20D3A
M34GMC09C3A
M34GMC29C3A
ITEM
HLE8301_
HLE8300_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLE8034_
Item Description
X HUE3820_ Chassis, 12.5 kHz (Masked) X X X
X HUE3819_ Chassis, 20/25 kHz (Masked) X X X
X HUE3818_ Chassis, 12.5 kHz (Expanded) X X X
X HUE3817_ Chassis, 20/25 kHz (Expanded) X X X
XXXXHLE3501_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8068_
HLN8076_
March, 1997 68 No. xi
Foreword Name of Manual
Model Charts
DESCRIPTION
GM300 12.5 kHz
GM300 20/25 kHz
GM300 12.5 kHz
GM300 20/25 kHz
GM300
DESCRIPTION
UHF Mobile Radio
8
FREQ
8
16
16
438 — 470 MHz
25 — 40 Watts RF Power
RF Board 20/25 kHz
RF Board 12.5 kHz
Display Board 8/16 Frequency
Logic Board Masked
Logic Board, Expanded
Vol/Mic Board
PA Board
Front Panel Hardware, 8/16 Freq
PA Hardware
Chassis Hardware
MODEL
M44GMC00D3A
M44GMC20D3A
M44GMC09C3A
M44GMC29C3A
ITEM
HLE8301_
HLE8300_
HLN8070_
HLN8074_
HLN8071_
HLN8075_
HLN8072_
HLE8271_
Item Description
X HUE3918_ Chassis, 12.5 kHz (Masked) X X X
X HUE3822_ Chassis, 20/25 kHz (Masked) X X X
X HUE3917_ Chassis, 12.5 kHz (Expanded) X X X
X HUE3821_ Chassis, 20/25 kHz (Expanded) X X X
XXXXHLE3772_ PA Kit (part of chassis) X X
XXXXHCN3503_ Control Head, 8/16 Channel X X X
X X HLN8122_ Front Panel Lens, 8 Channel
X X HLN8123_ Front Panel Lens, 16 Channel
X X HHN8073_ Housing Kit, masked
X X HHN8170_ Housing Kit, expanded
XXXXHLN8120_ Nameplate
X X HLN8121_ ROM Kit
XXXXHKN4137_ Power Cable
XXXXHMN3413_ Microphone w/hangup clip
XXXXHLN5189_ Installation Kit
XXXX6880902Z09 Owners Manual GM300
X X 6880902Z26 Operator Card 8 Channel
X X 6880902Z41 Operator Card 16 Channel
HLN8272_
HLN8076_
xii 68 No. March, 1997
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Professional Radio GM Series Radio Installation Manual 68P64112B30 Issue: July 2000
ii Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant, either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty-free license to use that arises by operation of law in the sale of a product.
iii SAFETY INFORMATION Read this information before using your radio. SAFE AND EFFICIENT OPERATION OF MOTOROLA TWO-WAY RADIOS This document provides information and instructions for the safe and efficient operation of Motorola Portable and Mobile Two-Way Radios. The information provided in this document supersedes the general safety information contained in user guides published prior to 1 January 1998. For information regarding radio use in hazardous areas, please refer to the Factory Mutual (FM) approval manual supplement. EXPOSURE TO RADIO FREQUENCY ENERGY Your Motorola Two-Way Radio, which generates and radiates radio frequency (RF) electromagnetic energy (EME), is designed to comply with the following National and International Standards and Guidelines regarding exposure of human beings to radio frequency electromagnetic energy: Federal Communications Commission Report and Order No. FCC 96-326 (August 1996) American National Standards Institute (C95.1 - 1992) National Council on Radiation Protection and Measurements (NCRP-1986) International Commission on Non-Ionizing Radiation Protection (ICNRP- 1986) European Committee for Electrotechnical Standardization (CENELEC): To assure optimal radio performance and to ensure that your exposure to radio frequency electromagnetic energy is within the guidelines in the above standards, always adhere to the following procedures: MOBILE RADIO OPERATION AND EME EXPOSURE To assure optimal radio performance and that human exposure to radio frequency electromagnetic energy is within the guidelines referenced in this document, transmitonlywhen people inside and outside the vehicle are at least the minimum distance away from a properly installed, externally- mounted antenna. The table below lists the minimum distance for several different ranges of rated radio power. ENV 50166-1 1995 E Human exposure to electromagnetic fields Low frequency (0 Hz to 10 kHz) ENV 50166-2 1995 E Human exposure to electromagnetic fields High frequency (10 kHz to 300 GHz) Proceedings of SC211/B 1996 “Safety Considerations for Human Exposure to EMFs from Mobile Telecommunication Equipment (MTE) in the Fre- quency Range 30MHz - 6 GHz.” (EMF - Electro-Magnetic Fields) Table 1 Rated Power and Distance Rated Power of Vehicle-Installed Mobile Two-Way RadioMinimum Distance from Transmitting Antenna 7to15Watts30.5 Centimetres (1 Foot) 16 to 50 Watts 61 Centimetres (2 Feet) More than 50 Watts91.5 Centimetres (3 Feet)
iv Mobile Antenna Installation Install the vehicle antennaexter nalto the vehicle and in accordance with: a. The requirements of the antenna manufacturer/supplier b. Instructions in the radio installation manual. Control Station Operation When radio equipment is used to operate as a control station, it is important that the antenna be installed outside the building and away from places where people may be in close proximity. INSTALLATION WARNINGS For vehicles with electronic anti-lock/anti-skid brakes, Motorola recommends the following radio installation precautions and vehicle braking system test procedures to ensure that the radio, when transmitting, does not interfere with the operation of the vehicle braking system. Refer to your vehicle service manual for details of your vehicle’s braking system, or contact your dealer directly. Installation Precautions: 1.Always provide as much distance as possible between the braking modulator unit and the radio, the radio antenna, and associated transmission line. Before installing the radio, determine the location of the braking modulator unit in the vehicle. Depending on the make and model of the vehicle, the braking modulator unit may be located in the trunk, under the dashboard, in the engine compartment, or in some other cargo area. If you cannot determine the location of the braking modulator unit, refer to the vehicle service manual or contact a dealer for the particular make of the vehicle. 2.If the braking modular unit is located on the left side of the vehicle, install the radio on the right side of the vehicle, and conversely. 3.Route all radio wiring, including the antenna transmission line, as far away as possible from the braking modular unit and associated braking system wiring. 4.Never activate the radio transmitter while the vehicle is in motion and the vehicle trunk lid is open. Braking System Tests: Be sure the following vehicle testing is done in an isolated area. The following procedure checks for the most common types of interference that may be caused by a radio transmitter to vehicle braking system: 1.Run the vehicle engine at idle speed and set the vehicle transmission selector to PARK. Release the brake pedal completely and key the radio transmitter. While NOT speaking into the microphone, verify that there are no unusual effects (visual or audible) to the vehicle lights, or other electrical equipment and accessories. 2.Repeat Step 1, except do so while speaking into the microphone. 3.Press the vehicle brake pedal slightly; just enough to illuminate the vehicle brake light(s). Then repeat Steps 1 and 2. 4.Press the vehicle brake pedal firmly and repeat Steps 1 and 2. NOTE Refer to Table 1 for rated power and minimum distance values for transmitting antennas. WARNING: Disruption of the anti-skid/anti-lock braking system by the radio transmitter may result in unexpected vehicle motion. !
v 5.Ensure that there is a minimum of two vehicle lengths between the front of the vehicle and any object in the vehicle’s forward path. Then, set the vehicle transmission selector to DRIVE. Press the brake pedal just far enough to stop the vehicle motion completely. Key the radio transmitter. Verify that the vehicle does not start to move while NOT speaking into the microphone. 6.Repeat Step 5, except do so while speaking into the microphone. 7.Release the brake pedal completely and accelerate the vehicle to a speed between 25 and 40 kilometres (15 and 25 miles) per hour. Ensure that a minimum of two vehicle lengths is maintained between the front of the vehicle and any object in the vehicle’s forward path. Have another person key the radio transmitter, and verify that the vehicle can be braked normally to a moderate stop while NOT speaking into the microphone. 8.Repeat Step 7, except do so while speaking into the microphone. 9.Release the brake pedal completely and accelerate the vehicle to a speed of 30 kilometres (20 miles) per hour. Ensure that a minimum of two vehicle lengths is maintained between the front of the vehicle and any object in the vehicle’s forward path. Have another person key the radio transmitter, and verify that the vehicle can be braked properly to a sudden (panic) stop while NOT speaking into the microphone. 10.Repeat Step 9, except do so while speaking into the microphone. 11.Repeat Steps 9 and 10, except use a vehicle speed of 50 kilometres (30 miles) per hour. OPERATIONAL WARNINGS Potentially explosive atmospheres Blasting caps and areas WARNING: For radios installed in vehicles fuelled by liquefied petroleum gas, refer to the (U. S.) National Fire Protection Association standard, NFPA 58, for storage, handling, and/or container information WARNING: Turn off your Two-Way radio when you are in any area with a potentially explosive atmosphere, unless it is a radio type especially qualified for use in such areas (e.g. FM or Cenelec approved). Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or even death. WARNING:To avoid possible interference with blasting operations, turn off your radio when you are near electrical blasting caps. In a “blasting area” or in areas posted “turn off two-way radio”, obey all signs and instructions. NOTEThe areas with potentially explosive atmospheres referred to above include fuelling areas such as: below decks on boats; fuel or chemical transfer or storage facilities; areas where the air contains chemicals or particles, such as grain, dust or metal powders; and any other area where you would normally be advised to turn off your vehicle engine. Areas with potentially explosive atmospheres are often but not always posted. ! ! !
vii Ta b l e o f C o n t e n t s SAFETY INFORMATION ....................................................................................... iii Chapter 1 INSTALLATION 1.0 Introduction .......................................................................................................... 1-1 1.1 General Information ....................................................................................... 1-1 1.2 Plan the Installation ........................................................................................ 1-1 2.0 DC Power Cable Installation................................................................................ 1-1 2.1 Planning the Power Cable Installation ........................................................... 1-1 2.2 Power Cable Installation Procedure ............................................................... 1-2 3.0 Trunnion Installation ............................................................................................ 1-4 3.1 Planning the Mounting Trunnion Installation .................................................. 1-4 3.2 Trunnion Installation Procedure ..................................................................... 1-4 3.3 Control Head Mounting Position .................................................................... 1-5 4.0 Antenna Installation ............................................................................................. 1-5 4.1 Mobile Radio Operation and EME Exposure ................................................. 1-5 4.2 Selecting an Antenna Site .............................................................................. 1-6 4.3 Antenna Installation Procedure ...................................................................... 1-6 4.4 Completing the Installation ............................................................................. 1-7 5.0 Installation Options .............................................................................................. 1-9 5.1 Radio Mounting in Dashboard........................................................................ 1-9 5.2 External Speaker Installation ....................................................................... 1-10 5.3 Remote Control Head Installation ................................................................ 1-11 6.0 Accessory Connections ..................................................................................... 1-13 6.1 Accessory Connector Pin Functions ............................................................ 1-13 Chapter 2 REDUCING NOISE INTERFERENCE 1.0 Introduction .......................................................................................................... 2-1 1.1 Noise Sources ................................................................................................ 2-1 1.2 Radiated Noise............................................................................................... 2-1 1.3 Conducted Noise............................................................................................ 2-2 1.4 Induced Noise ................................................................................................ 2-3 2.0 Operation of a Conventional Ignition System ...................................................... 2-3 2.1 Introduction .................................................................................................... 2-3 2.2 Sources of Ignition Interference ..................................................................... 2-3 3.0 Detection of Noise Sources ................................................................................. 2-5 3.1 Noise Detection Procedure ............................................................................ 2-5 3.2 Sources of Noise ............................................................................................ 2-7 4.0 Noise Reduction Techniques............................................................................... 2-7 4.1 General .......................................................................................................... 2-7 4.2 Ignition System Interference .......................................................................... 2-8 4.3 Alternator/Generator Whine ........................................................................... 2-9
viii 4.4 Voltage Regulator Noise ...............................................................................2-11 4.5 Hood and Trunk Lid Noise ............................................................................2-11 4.6 Other Electrical Noises .................................................................................2-12 4.7 Wheel Static..................................................................................................2-12 4.8 Ground Bonding............................................................................................2-12
Chapter 1 INSTALLATION 1.0 Introduction 1.1 General Information There are two methods of installing your mobile radio: 1.Using the direct mounting trunnion and power cables supplied with a standard radio package. 2.Mounted in the car radio cut-out (using the required GLN7320_ mounting kit, per ISO7736). An accessory connector on the rear of the radio (see Figure 1-4 Connections to the Back of Radio) enables you to attach different accessories required for the installation. A ten-pin telephone type connector on the front control head panel (see Figure 1-5 Transmission Hump Mounting (Top) and Below Dash Mounting (Bottom)) provides for the connection of various types of microphones. 1.2 Plan the Installation 1.Mount the radio horizontally near the driver, so the driver can easily view, access and operate the controls and accessories. 2.Ensure that the location is not exposed to dirt and moisture. 3.Verify that there will be sufficient space around the mobile unit for air flow and installation. 4.Check that there is enough routing space for the power cable connector and the antenna coaxial cable. 5.Plan the best place to run connections to minimize pinching, crushing, and overheating of wires and cables. 2.0 DC Power Cable Installation 2.1 Planning the Power Cable Installation The 3 metres (10 feet) DC power cable shipped with the radio should be long enough to be installed in most vehicles. Take the following precautions before you begin: Whenever possible, avoid routing the cable above the catalytic converter. Use grommets whenever a cable has to pass through a hole in a metal panel. NOTE In a vehicle with an airbag, make sure that the mounting location of the mobile radio, or of any radio accessory, is not in the deployment path of the air bag. CAUTION: This radio must be operated only in negative ground electrical systems. Operating the radio on a positive ground system will cause the cable fuse to short-circuit. Check the vehicle ground polarity before you begin the installation. !
1-2INSTALLATION The following table lists power cables available for this radio: 2.2 Power Cable Installation Procedure Begin the power cable installation as follows: 1.Determine a routing plan, keeping in mind where the radio is to be mounted. 2.Locate an existing hole with grommet in the vehicle fire wall, or use a 9.5 mm (3/8-inch) bit to drill an access hole in the fire wall. Install a grommet with a 5 mm (3/16-inch) inside diameter into the hole to protect the power cable. 3.From inside the vehicle, feed the red and black leads (without the lugs attached) through the access hole and into the engine compartment. (See Figure 1-1 Power Cable Routing into the Engine Compartment)Ta b l e 1 - 1Power Ca bles Number Description Rating HKN4137_Low power cable to batter y1-25W; 15A fuse; 14 AWG 3m HKN4191_ High Power Cable to battery 25-45W; 20A fuse; 12 AWG 3m CAUTION: Improper handling with the power cable may cause shorting to ground. Ensure that during radio installation the power cable fuse is removed. CAUTION: Be very careful not to damage existing wires. Figure 1-1Power Cable Routing into the Engine Compartment ! ! Black Lead Red LeadFirewall Grommet Engine Compartment To Radio FL0830246-OFL0830246-O
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Operating Instructions for the Motorola
Radius® GM300 8-Channel, Conventional FM Radio
To turn the radio on
Turn the ON/OFF VOLUME knob to the right until it clicks. The LED lights will show the last sta-
tus of the radio, and a start-up tone will be heard.
To receive
Set the volume by turning the ON/OFF VOLUME knob clockwise.
Select the channel by pressing the UP/DOWN (
/
) button. An extended press will scroll
through the channels.
To monitor a channel, push the MONITOR (
) button or take the microphone off hook. When
in the monitor mode, the amber MONITOR LED will light steadily.
To unsquelch the radio, press and hold the MONITOR (
) button for two seconds.
To leave the unsquelched mode, press the MONITOR (
) button again. This will return the
radio to the coded squelch (PL/DPL) mode.
A short beep tone will be heard whenever a keypress is made.
To transmit
When the channel is clear, press and hold down the Push-to-Talk (PTT) button on the side of the
microphone, and speak slowly and clearly. The TRANSMIT/BUSY LED will remain red until the
PTT button is released to indicate that you are “on the air”.
The red TRANSMIT/BUSY LED will flash whenever there is another carrier on the selected chan-
nel.
NOTE:
If your radio has the Time-out-timer (TOT) function activated, transmission will termi-
nate if you hold the PTT button down for over 60 seconds or the programmed time
period. When this occurs, an alert tone sounds four seconds before the transmission is
cut. To resume transmitting, release the PTT and push again.
ON/OFF
VOLUME
CHANNEL
UP
MONITOR
LED
SCAN
LED
TRANSMIT/
BUSY LED
MONITOR
SELECT
SPEAKER
SCAN
CHANNEL
DOWN
MICROPHONE
CONNECTOR
+
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