Reference Frequency Calibration - Kenwood TS-50S Instruction Manual

ADJUSTMENTS
Removing the transceiver covers provides access to
the following variable resistors:
Top cover removed:
Sidetone volume (VR 5)
Beep voiume (VR 6)
Microphone gain (only SSB or AM mode, VR 7)
Bottom cover removed:
FM modulation level (VR 1)
In addition, the fuse mounted under the shield can be
replaced with the bottom cover removed.
@ =Removal of the Top and Bottom Covers
Remove the 7 screws as shown. Lift off the
transceiver top cover.
Remove the 9 screws as shown. Lift off the
transceiver bottom cover.
REFERENCE FREQUENCY
CALIBRATION
This section describes the method for calibrating the
reference frequency. However, a complete calibration
was done just prior to shipment, therefore no further
adjustment should be necessary. With the optional
S0-2 installed, calibration is not possible.
1 Remove the top and bottom covers from the
transceiver.
2 Connect the DC power cable and switch the
power on.
3 Insert one end of the supplied calibration cable
onto TP 6 of the PLL board.
4 Insert the other end of the calibration cabie onto
TP 3 (CAL terminal) of the RF board.
5 Tune in a Standard Time and Frequency station
such as WWV on 5, 10, or 15 MHz.
6 The WWYV signal will mix with the calibration signal
to produce a beat frequency. Adjust the trimmer,
TC 1, for the lowest frequency of beat note.
7 After completing the adjustment, remove the
calibration cable.
Note: When reinstalling the boards, take care not to
damage the wires.
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Location of the Variable Resistors
The variable resistors are located at the positions
shown.
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the speaker,
2 Be sure not to scrape or pinch any wires when reinstalling the
covers.
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