Antenna Tuner Adjustment; Cm Coupler Balance Adjustment - Yaesu FTDX10 Technical Supplement

Antenna Tuner Adjustment

CM Coupler Balance Adjustment

 Connect the 50-Ohm Dummy Load and Watt-
meter to the ANT jack.
 Connect the Digital DC voltmeter (high-Z) to
pin 2 of J4020 on the FINAL Unit.
 Turn off the [TUNE] switch, then set the fre-
quency to 24.900 MHz in the CW-U mode.
 Press and hold in the [STEP/MCH], [C.S] and
[FINE] keys, while turning the radio ON, to en-
ter the alignment mode.
J4020
 Rotate the [FUNC] knob to select the alignment
parameter "3-017 I-ALC 24".
 Press and hold the PTT button, while adjusting
the [MPVD] ring for 45 - 55 Watts on the Watt-
meter.
 Adjust TC4001 on the FINAL Unit for mini-
mum deflection on the DC voltmeter (less than
0.1 V).
 Release the PTT button.
 Press and hold in the [FUNC] knob to save the
new setting and exit the alignment mode.
TC4001
ALIGNMENT -12
Alignment
FTDX10 Technical Supplement