Kenwood TK-2107 Service Manual page 21

Use the KPG-55D programming software for adjustment of the next item in PC MODE (see page 3).
Squelch Level, Transmit frequency, DQT Balance, RF Power, QT Deviation, DQT Deviation, Battery Level
Section common to the transmitter and receiver (VCO)
Item Condition
1. Setting 1) Power supply voltage
Battery teriminal:7.5V
2. VCO lock 1) CH: TX high
voltage
2) CH: RX high
3) CH: TX low
4) CH: RX low
Receiver Section
Item Condition
1. Band- 1) CH: RX center
pass filter 2) Tra generator output -40dBm
Connect the spectrum analyzer
to TP2 terminal.
2. AF level 1) CH: RX center
SSG output: -53dBm (501 V)
MOD: 1kHz
DEV: 3.0kHz (Wide)
3. Sensitivity 1) CH: RX center
CH: RX LO
CH: RX Hi
SSG ouput: -116dBm (0.35 V)
MOD: 1kHz
DEV: 3.0kHz (Wide)
4. Squelch 1) CH: RX center
Level MONI: ON
(PC MODE)
2) Level 9
SSG output: -117dBm (0.32 V)
3) Level 3
SSG output: -125dBm(0.126 V)
Transmitter section
Item Condition
1. Transmit 1) CH: TX center
frequency PTT: ON
(PC MODE)
2. DQT/QT 1) CH: TX center
Balance
(PC MODE)
3. Power 1) CH:TX center
(PC MODE) Battery terminal: 7.5V
PTT: ON
4. MAX DEV 1) CH: TX center
AG: 1kHz/120mV
PTT: ON
5. MIC SENS 1) CH: TX center
AG: 1kHz/12mV
6. QT DEV 1) CH: TX center
(PC MODE) QT: 67.0Hz
7. DQT DEV 1) CH: TX center
(PC MODE)
TK-260 :K, K2
8. Battery 1) Battery terminal: 5.8V
Level
(PC MODE)
ADJUSTMENT
Measurement
Test equipment Terminal
Digital voltmeter CV
Measurement
Test equipment Terminal
Tra generator ANT
Spectrum analyzer TP2
SSG ANT
Oscilloscope SP
AF. V. M
Distortion meter
Measurement
Test equipment Terminal
Frequency ANT
counter
Modulation
analyzer or linear
detector (LPF: 3kHz)
Oscilloscope
Power meter
Ammeter
Modulation ANT
analyzer or linear MIC
detector (LPF:15kHz)
Oscilloscope
AG
AF. V. M
Modulation ANT
analyzer or linear
detector (LPF:3kHz)
Oscilloscope
AG
AF. V. M
Modulation
analyzer or linear
detector (LPF:3kHz)
Oscilloscope
Digital voltmeter BATT
Adjustment
Parts Method
TC1 3.8V
TC2 3.8V
Check
Adjustment
Parts Method
TC201 Adjust the frequency so that
it becomes the spectrum
waveform shown in Fig.1.
L212 Adjust to the MAX AF level
Check
PC key Level 9
Adjust to close the squelch.
Level 3
Adjust to close the squelch.
Adjustment
Parts Method
PC key Adjust to center frequency
VR500 Rectify the waveform to square
wave
Adjust it to 4.8W
VR501 Adjust it to 4.2kHz
Check
(+, - Peak whichever is Maximum)
PC key Adjust it to 0.75kHz
PC key Adjust it to 0.75kHz
PC key A d j u s t s o t h a t t h e L E D
flashes.
TK-2107
Specifications/
Remarks
0.1V
0.1V
more than 0.7V
Specifications/
Remarks
SINAD: 12dB or
higher
The squelch must
be closed.
The squelch must
be closed.
Specifications/
Remarks
within 100Hz
0.1W
100Hz
2.2kHz~3.6kHz:
(Wide)
50Hz
50Hz
The LED must
flash.
21