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TH-79 E
Kenwood TH-79 E Manuals
Manuals and User Guides for Kenwood TH-79 E. We have
1
Kenwood TH-79 E manual available for free PDF download: Service Manual
Kenwood TH-79 E Service Manual (59 pages)
144/430(440) MHz FM Dual Bander
Brand:
Kenwood
| Category:
Transmitter
| Size: 2.73 MB
Table of Contents
Contents
1
Disassembly for Repair
2
How to Remove the Printed Circuit Board
2
Open the Case
2
Remove the Holder
2
How to Remove the Shield Cover and the B Unit
3
How to Remove the LCD ASSY
3
Circuit Description
4
Frequency Configuration
4
Receiver Signal Channel
5
UHF Reception
6
VHF Reception
6
Sub-VHF Reception
6
Audio Circuitry
6
Transmission Signal Channel
7
Modulation Circuit
7
Driver, Final Amplifier
7
APC Circuit
7
PLL Circuit
8
Reference Oscillation Circuit
8
Phase Comparison
8
PLL, VHF VCO Circuit
8
Lock Voltage
9
Vhf Vco
9
Uhf Vco
9
Unlock Detection Circuit
9
Power Supply Circuit
10
Ni-CD Recharge Circuit
10
Power Supply Switching Circuit
10
Microprocessor and Peripheral Circuits
11
Reset Backup Circuit
11
Battery Voltage Detection Circuit
11
Battery Save Circuit
12
LED Drive Circuit
12
LCD Illumination
12
LED Lamp Circuit During TX, BUSY
12
Rotary Encoder Input Circuit
13
Auxiliary Circuits
14
Ctcss
14
Dtss
14
DTMF Decode Timing
14
Description of Components
15
Semiconductor Data
18
Pin Connections
18
DTMF Decoder IC
20
Pin Connection Diagram
20
Pin Description
20
Block Diagram
21
DC-DC Converter
21
Power Module
21
Parts List
22
Exploded View
43
Packing
45
Adjustment
47
Required Test Equipment
47
Stabilized Power Supply
47
DC Ammeter
47
How to Use the Set Mode
48
About the Set Mode
48
Setting Procedures
48
Common Section
49
VHF Receiver Section
49
SUB-UHF Receiver Section
50
UHF Receiver Section
50
UHF Transmitter Section
51
VHF Transmitter Section
51
Parts Layout
52
Terminal Function
53
Wiring Diagram
55
CTCSS Unit
57
Specifications
58
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