Kenwood TK-8108 Service Manual page 42

TK-8108
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(0.28µV):
-116dBm(0.35µV):
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)
TK-8108 C
Channel TX
1: Center 470.100
2: Low 450.100
3: High 489.900
4 470.000
5 470.200
6 470.400
TK-260 :K, K2
42
ADJUSTMENT
Condition Test equipment
Digital voltmeter
SSG
Digital voltmeter
Tra generator
Spectrum analyzer
Measurement
Condition Test equipment
Wide/Narrow SSG
Oscilloscope
Wide/Narrow
AF. V. M
Wide/Narrow
Distortion meter
Wide
Narrow
Wide
Wide/Narrow
Wide
Wide
Wide/Narrow
Wide
TK-8108 C3
RX Channel
470.050 1: Center
450.050
2: Low
489.950 3: High
470.000 4
470.200 5
470.400 6
Measurement
Terminal Parts
CV TC2
TC1
AFV L22
ANT TC3
BPF TC5
Terminal Parts
ANT
Ext. SP
PC key
TX RX
415.100 415.050
400.100 400.050
429.900 429.950
415.000 415.000
415.200 415.200
415.400 415.400
Adjustment Specifications/
Method
5.5V ±0.1V
5.5V ±0.1V
Check
0.8V or more
3.2~3.3V(DC)
Adjust the BPF waveform to Fig.1
Adjustment Specifications/
Method
Check SINAD:
12dB or higher
Adjust to open the squelch.
Remarks
Remarks