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TK-7108
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-7108 C
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
42
ADJUSTMENT
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
TK-7108 C2
RX
Channel
160.050
1: Center
146.050
2: Low
173.950
3: High
160.000
4
160.200
5
160.400
6
Measurement
Terminal
Parts
CV
TC2
TC1
AFV
L22
ANT
TC3
BPF
TC5
Terminal
Parts
ANT
Ext. SP
PC key
TX
RX
149.100
149.050
136.100
136.050
161.900
161.950
149.000
149.000
149.200
149.200
149.400
149.400
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
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