Yaesu FT-991A, Technical Supplement

Page: 29 / 131

Alignment
ALIGNMENT-18
FT-99
1
Technical Supplement
Current ALC Adjustment

Connect the Microphone to the front panel MIC
jack.

Connect the 50-Ohm Dummy Load and Watt-
meter to the “HF/50 MHz” ANT jack.

Press and hold in the [A=B], [A/B], and [FAST]
keys, while turning the radio on, to enter the
alignment mode.

Rotate the [MULTI] Dial knob to select the
alignment menu item “10-01 I-ALC 1.8” for the
1.8 MHz amateur band's ALC Adjustment.

Set the VFO-A frequency to 1.90 MHz in the
CW mode.

Press the PTT button, then adjust the [CLAR/
VFO-B] knob
for 100 W on the Wattmeter.

Release the PTT button, then rotate the [CLAR/
VFO-B] knob so that the parameter indication
“5” in-crease.

Rotate the [MULTI] Dial knob to select the
alignment menu item “10-02 I-ALC HFL” for
the 7 MHz amateur band's ALC Adjustment.

Set the VFO-A frequency to 7.10 MHz in the
CW mode.

Press the PTT button, then adjust the [CLAR/
VFO-B] knob
for 100 W on the Wattmeter.

Release the PTT button, then rotate the [CLAR/
VFO-B] knob so that the parameter indication
“5” in-crease.

Rotate the [MULTI] Dial knob to select the
alignment menu item “10-03 I-ALC HFM” for
the 14 MHz amateur band's ALC Adjustment.

Set the VFO-A frequency to 14.20 MHz in the
CW mode.

Press the PTT button, then adjust the [CLAR/
VFO-B] knob
for 100 W on the Wattmeter.

Release the PTT button, then rotate the [CLAR/
VFO-B] knob so that the parameter indication
“5” in-crease.

Rotate the [MULTI] Dial knob to select the
alignment menu item “10-04 I-ALC HFH” for
the 21 MHz amateur band's ALC Adjustment.

Set the VFO-A frequency to 21.240 MHz in the
CW mode.

Press the PTT button, then adjust the [CLAR/
VFO-B] knob
for 100 W on the Wattmeter.

Release the PTT button, then rotate the [CLAR/
VFO-B] knob so that the parameter indication
“10” in-crease.

Rotate the [MULTI] Dial knob to select the
alignment menu item “10-05 I-ALC 50” for the
50 MHz amateur band's ALC Adjustment.

Set the VFO-A frequency to 51.90 MHz in the
CW mode.

Press the PTT button, then adjust the [CLAR/
VFO-B] knob
for 100 W on the Wattmeter.

Release the PTT button, then rotate the [CLAR/
VFO-B] knob so that the parameter indication
“5” in-crease.

Connect the 50-Ohm Dummy Load and Watt-
meter to the “144/430 MHz” ANT jack.

Rotate the [MULTI] Dial knob to select the
alignment menu item “10-06 I-ALC 144” for the
144 MHz amateur band's ALC Adjustment.

Set the VFO-A frequency to 145.90 MHz in the
CW mode.

Press the PTT button, then adjust the [CLAR/
VFO-B] knob
for 100 W on the Wattmeter.

Release the PTT button, then rotate the [CLAR/
VFO-B] knob so that the parameter indication
“5” in-crease.

Rotate the [MULTI] Dial knob to select the
alignment menu item “10-07 I-ALC 430” for the
430 MHz amateur band's ALC Adjustment.

Set the VFO-A frequency to 439.00 MHz in the
CW mode.

Press the PTT button, then adjust the [CLAR/
VFO-B] knob
for 50 W on the Wattmeter.

Release the PTT button, then rotate the [CLAR/
VFO-B] knob so that the parameter indication
“3” in-crease.

Press and hold in the [MENU(SETUP)] button
for one second to save the new setting and exit
the alignment mode.