Kenwood TS-850S Instruction Manual page 71

6-6-6. Adjusting the NOTCH
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6-6-7. Digital display calibration
66
VR16
Calibration
cable
linear's relay control line to pin 4. The relay in this
transceiver is capable of handling 100V DC at 500 rnA.
Note
The TL-922/922A is NOT designed for Full Break-in
operation. Attempting operation of the linear in this
mode might lead to damage in the linear amplifier.
1. Rotate the tuning knob so that a stable signal of
about 59 is received in USB mode and the beat
frequency of the audio output is about 1.5 kHz.
2. Rotate the HIGH side of the SLOPE TUNE control
fully clockwise and the LOW side fully
counterclockwise.
3. Activate the NOTCH switch, and rotate the NOTCH
control to minimize the audio output.
4. Adjust VR16 to further reduce the audio output.
5. Perform steps 3 and 4 repeatedly.
6. The best point is where the audio output does not
change.
1. Remove the case.
2. Remove the shield cover of the final unit.
3. Remove the CAR unit.
4. Plug the accessory calibration cable to any one of the
CAL pins on the PLL unit.
Plug the other end of the calibration cable to CAL Pin
on the ANT unit.
5. Connect your antenna and tune to WWV. Select
"TUNE" on the front panel key pad.
6. Using a small flat bladed screwdriver adjust trimmer
capacitor TC5 on the PLL unit for zero beat. Zero
beat is the point where the two audio tones match
perfectly.
7. The reference frequency has been calibrated
correctly.
8. Remove the calibration cable.
Note
This equipment was calibrated at the factory using an
external frequency standard and should not require
recalibration. Do not attempt recalibration unless it is
necessary.