Kenwood TK-7108 Service Manual page 45

TK-7108
Transmitter section
Item
1. Frequency 1) CH: TX center
2) Transmit
2. High power 1) CH: TX low
CH: TX low'
CH: TX center
CH: TX high'
CH: TX high
2) Transmit
3. Low Power 1) CH: TX low
CH: TX low'
CH: TX center
CH: TX high'
CH: TX high
2) Transmit
4. DQT 1) CH: TX low:
CH: TX center:
balance
CH: TX high:
2) Transmit
5. Max 1) CH: TX low:
deviation
CH: TX center:
CH: TX high:
2) AG: 1kHz/50mV
3) Transmit
6. Mic 1) CH: TX center:
sensitivity 2) AG: 1kHz/5mV
3) Transmit
7. QT 1) CH: TX low:
deviation CH: TX center:
CH: TX high:
2) Transmit
8. QT 1) CH: TX low:
deviation CH: TX center:
CH: TX high:
2) Transmit
9. DTMF 1) CH: TX center:
2) Transmit
deviation
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
44
ADJUSTMENT
Measurement
Condition Test equipment
Frequency
counter
Power meter
Wide Modulation
analyzer or linear
Wide/Narrow
Wide detector(LPF: 3kHz)
Oscilloscope
Wide Modulation
analyzer or linear
Wide/Narrow
Wide
detector(LPF: 15kHz)
Oscilloscope
AG
AF.V.M
Wide/Narrow
Wide Modulation
Wide/Narrow analyzer or linear
Wide
detector(LPF: 3kHz)
Oscilloscope
Wide
Wide/Narrow
Wide
Wide/Narrow
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
Adjustment
Terminal Parts
ANT PC key Adjust to center frequency
25W
5W
Adjust the waveform as below
±4.0kHz: Wide
ANT
MIC
±2.0kHz: Narrow
According to the large +,-
Check
±0.75kHz: Wide
±0.35kHz: Narrow
±0.75kHz: Wide
±0.35kHz: Narrow
±3.0kHz: Wide
±1.5kHz: Narrow
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
Specifications/
Method Remarks
within ±100Hz
±1.0W
±0.5W
±50Hz
±3kHz±0.2kHz: Wide
±1.5kHz±0.1kHz: Narrow
±0.05kHz
±0.05kHz
±0.2kHz