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GPH-CMD
BK Radio GPH-CMD Service Manual
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Maintenance
GPH-CMD VHF Radio
Page 5-12
BK RADIO
Figure 5-2 Systems Board Adjustm
ents
ADJUSTS VCO
TOP SIDE
NOTE: For clarity
, the top lid of the shield
is
not shown. The access hole to T1 is cov
e
red
with copper tape that is removed only for
servicing purposes. The tape must be
replaced after the adj
ustments are made.
64
66
Table of Contents
Default Chapter
2
Table of Contents
2
Description
6
General Information
6
Introduction
6
Section I
6
Technical Characteristics
7
Accessories
8
License Requirements
8
Service Information
8
Installation and Programming
9
Antenna Installation
9
Battery Installation
9
General Information
9
Unpacking and Inspecting Equipment
9
How to Program Radios
10
Keypad Programming
10
Navigation
11
Group Parameters (Ch 00)
12
Group Options: 1-12345678
12
Group Label
12
Channel Parameters (Ch 01 - Ch 20)
13
Channel Bandwidth
13
Receive Frequency
13
Receive Guard
13
Transmit Frequency
14
Transmit Guard
14
Channel Label
14
Global Parameters (Grp 00)
15
Keypad Programming Password
15
Global Options One: 1-12345678
15
Global Options Two: 2-12345678
17
Automatic Numeric Identification (Ani)
18
Transmitter Time-Out Timer
18
Scan Delay Time
19
Backlight Duration
19
Priority 1 Channel
19
Priority 1 Group
20
2.2.1.4.10 Priority 2 Channel
20
2.2.1.4.11 Priority 2 Group
20
2.2.1.4.12 Old-Style Bk Priority Scan
21
Review Global Parameters (Grp 00)
21
Exit Programming Mode
21
Cloning Radio Settings
21
Digital Code Guard Values
24
Tone Code Guard Values
24
Fcc Requirements
25
Operational Instructions for Fcc Occupational Use Requirements
26
Features
25
Introduction
25
Federal Communications Commission Regulations
26
Compliance with Rf Exposure Standards
27
Industry Canada Compliance
27
Instructions
27
Safety Precautions
28
Radio Controls
29
Basic Operation
30
Receive
30
Transmit
30
Code Guard Operation
31
Code Guard Receive
31
Code Guard Transmit
31
Command Group
31
Building a Command Group
32
Modification of the Command Group
32
Operating from the Command Group
32
Channel Groups
33
Programmable Top Switches/Function Menu
33
Select a Group/Channel
33
3.10 Scan Operation
34
Keypad Lock
34
Nuisance Channel Delete
34
Scan Code Guard Channels
34
Change the Scan List
35
Group Scan
35
Talkback Scan
35
Transmit with Scan on
35
3.11 Priority Scan
36
Dual Priority Scan
36
Old-Style Bk Priority Scan
37
Priority Mode a with Scan
37
Priority Mode B
37
Priority Mode B with Scan
37
Change the Priority 1 Channel
38
Priority Mode C
38
Priority Mode C with Scan
38
3.12 User Transmit Code Guard
39
3.13 Other Operational Features
39
Scan Delay
39
Ani Encoding
40
Busy Channel
40
Busy Channel Indication
41
Busy Channel Lockout
41
Busy Channel Lockout with Override
41
Dtmf Encoding
40
Hi/Lo Power
40
Time-Out Timer
40
3.14 Alphanumeric Display
42
Channel and Group Labels
43
Display Backlighting
43
3.15 Definitions and Acronyms
44
Theory of Operation
45
Introduction
45
Description
45
Receiver
45
Transmitter
47
Synthesizer
49
Systems Area
51
Digital Signal Processing
53
Maintenance
54
Introduction
54
Test Equipment Required
54
Overhaul
55
Accessories
55
Cleaning
56
Repair
57
Disassembly/Assembly
57
Battery Removal
57
Unit Disassembly
57
Assembly
58
Alignment Procedures
59
Test Setup
59
Alignment Order
59
Troubleshooting
68
Illustrated Parts List
70
Introduction
70
Parts List Description
70
Assembly Drawing Symbols
70
Final Assembly
71
Interconnect Diagram
73
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BK Radio GPH-CMD Specifications
General
Brand
BK Radio
Model
GPH-CMD
Category
Portable Radio
Language
English
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