Yaesu FT-817 Technical Supplement page 20

Alignment
CM Coupler Balance Adjustment
1. Terminate the antenna jack with a 50 Ohm dummy load.
Set the mode to CW, and connect the DC voltmeter to
J3004 (pin 7).
2. Tune the transceiver to 21.000 MHz, and key the trans-
ceiver.
3. Adjust TC3003 for minimum indication on the DC volt-
meter.
4. Tune the transceiver to 145.995 MHz (CW), and key
the transceiver.
5. Adjust TC3001 for minimum indication on the DC volt-
meter.
6. Tune the transceiver to 439.995 MHz (CW), and key
the transceiver.
7. Adjust TC3002 for minimum indication on the DC volt-
meter.
20
J3004 ( Pin7 )
TC3003
TC3001
TC3002