Kenwood TK-80 Service Manual page 52

Item Condition
14. S/N check 1) M CH: Following M CH
AF VR: 0.45V/4Ω
SSG f.: Following frequency
(USB: +1kHz, LSB: –1kHz)
M CH
13
14
15
16
17
18
19
20
21
22
Transmitter Section
Item Condition
1. ALC voltage 1) M CH: 11
adjustment Transmit
2. TX AMP 1) M CH: 11
adjustment Insert the measure cable to
CN19.
Transmit
3. MIX BIAS 1) M CH: 11
adjustment Transmit
4. CW/AM CAR 1) Power ON while holding the
level setting [SCAN] and [DATA] keys.
(Service adjustment mode)
Menu No.: 25
Transmit
2) Menu No.: 26
Transmit
5. TGC 1) Menu No.: 10
adjustment Transmit
2) Menu No.: 11
Transmit
3) Menu No.: 12
Transmit
ADJUSTMENT
Measurement
Test-
Unit Terminal
equipment
Radio Rear ANT
tester or panel
SSG
AF V.M EXT.SP
Oscilloscope
DM. SP
Frequency Mode SSG OUT
550.0kHz AM
1.550.0kHz AM
1.800.0kHz LSB –119dBm
3.550.0kHz LSB –119dBm
7.100.0kHz LSB –119dBm
10.100.0kHz LSB –119dBm
14.100.0kHz USB –119dBm
21.200.0kHz USB –119dBm
24.800.0kHz USB –119dBm
28.687.0kHz USB –119dBm
Measurement
Test-
Unit Terminal
equipment
D.V.M TX-RX TP1
50Ω CN19
terminated
Oscilloscope
or
Spectrum
analyzer
Spectrum CN19
analyzer
Adjustment
Unit Parts Method
S/N measurement
SSG MOD DEV
–89dBm 1kHz 60%
–89dBm 1kHz 60%
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Adjustment
Unit Parts Method
TX-RX VR12 2.7V
L60 Repeat adjustment
L61 2 to 3 times.
L63 Level maximum
L64
L65
L67
L69
VR2 Level maximum
Front [MODE] 9dBm
panel or
[DATA]
6.5dBm
6dBm
3dBm
0.8dBm
TK-80
Specifications/Remarks
10dB or more
AIP ON: Sensitivity down
(5~10dB)
Specifications/Remarks
+0.05V, –0.10V
CAR at 14.250MHz: MAX
± 1dB
± 0.5dB
± 0.5dB
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