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TUNER SECTION
0 dB=1µV
AM Tuning Voltage Adjustment
DC voltmeter
Main board TP1 G VT
+ �
Procedure: 1. Set the reception frequency of the unit to 530 kHz. 2. Adjust L105 for 1.2 ± 0.05 V reading on the DC voltmeter. 3. Set the reception frequency of the unit to 1,710 kHz. 4. Confirm that the voltage reading on the DC voltmeter is within 8.0 ± 0.5 V. Adjustment Location: MAIN board (See page 14)
AM Tracking Adjustment
loop antenna loop antenna (Supplied accessories)
AM RF SSG set 30% amplitude modulation by 400 Hz signal AM ANTENNA terminal (TM1)
60 cm
Field strength dB (µV/m) =SSG output level dB (µV/m) �26 dB.
Procedure: 1. Tune the set to 600 kHz. 2. Set the output of AM RF SSG so that the input level of the set will become 60 dB (µV/m). 3. Adjust L104 so that when the waveform on the oscilloscope is maximum, no noise appears. 4. Tune the set to 1,400 kHz.
5.
Adjust TC102 so that when the waveform on the oscilloscope is maximum, no noise appears.
� Repeat the procedures in each adjustment several times, and the tracking adjustment should be finally done by the trimmer capacitors. Adjustment Location: MAIN board (See page 14)
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