Receiver Section - Kenwood TK-7102 Service Manual

TK-7102
Use KPG-70D programming software for adjustment of the next items.
PCB Section
Item
1. Setting 1) Power supply voltage
DC Power supply teriminal:13.6V
2. VCO lock 1) CH: TX high
voltage
2) CH: RX high
3) CH: TX low
4) CH: RX low
3. IF Coil 1) CH: RX center wide
2) SSG output: -53dBm(501uV)
Mod: 1kHz, Dev: 3kHz
4. RF Band- 1) CH: RX center wide
pass filter
CH: RX low wide
CH: RX high wide
2) Tra generator output: -30dBm
Connect the spectrum analyzer
to BPF terminal

Receiver Section

Item
1. Sensitivity 1) CH: RX low:
CH: RX center:
CH: RX high:
2) SSG output:
-118dBm(0.28 V):
-116dBm(0.35 V):
Mod: 1kHz
Dev: 3.0kHz: Wide
Dev: 1.5kHz: Narrow
2. Squelch 9
1) CH: RX low:
CH: RX center:
CH: RX high:
2) SSG output:
9dB above to 12dB SINAD level:
Wide/Narrow
Mod: 1kHz
Dev: 3.0kHz: Wide
Dev: 1.5kHz: Narrow
3. Squelch 1 1) CH: RX low:
CH: RX center:
CH: RX high:
2) SSG output:
2dB above to 12dB SINAD level:
Wide/Narrow
Mod: 1kHz
Dev: 3.0kHz: Wide
Dev: 1.5kHz: Narrow
Test frequency(MHz)
Channel TX
1: Center 160.100
2: Low 146.100
3: High 173.900
4 160.000
5 160.200
6 160.400
TK-260 :K, K2
28
ADJUSTMENT
Measurement
Condition Test equipment
Digital voltmeter
SSG
Digital voltmeter
Tra generator
Spectrum analyzer
Measurement
Condition Test equipment
Wide/Narrow SSG
Wide/Narrow Oscilloscope
Wide/Narrow AF. V. M
Distortion meter
Wide
Narrow
Wide
Wide/Narrow
Wide
Wide
Wide/Narrow
Wide
RX
160.050
146.050
173.950
160.000
160.200
160.400
Adjustment
Terminal Parts Method
CV TC2 5.5V
TC1 5.5V
Check
AFV L22
ANT TC3 Adjust the BPF waveform to Fig.1
BPF TC5
Adjustment
Terminal Parts Method
ANT Check
Ext. SP
PC key Adjust to open the squelch.
Specifications/
Remarks
0.1V
0.1V
0.8V or more
3.2~3.3V(DC)
Specifications/
Remarks
SINAD:
12dB or higher