Alc Meter Adjustment; Tx Output Power/Po Meter/Txg Adjustment - Yaesu FT-891 Technical Supplement

 Set the VFO-A frequency to 51.500 MHz in the
CW mode.
 Press the PTT switch, then adjust the [ RF/SQL ]
knob for 110 W on the Wattmeter.
 Release the PTT switch, then rotate the [ RF/
SQL ] knob so that the parameter indication "12"
increase.
 Press and hold in the [ F ] key to save the new
setting and exit the alignment mode.

ALC Meter Adjustment

 Connect the Microphone to the Microphone
jack.
 C o n n e c t t h e 5 0 - O h m D u m m y L o a d a n d
Wattmeter to the ANT jack.
 Set the VFO-A frequency to 14.200 MHz in the
CW mode.
 Press and hold in the [ A ] , [ B ] and [ C ] keys,
w h i l e t u r n i n g t h e r a d i o o n , t o e n t e r t h e
alignment mode.
 Rotate the [ MULTI ] function knob to select the
alignment menu item "15-03 100W TXG 14".
 Rotate the [ RF/SQL ] knob to set the parameter
is "180".
 Rotate the [ MULTI ] function knob to select the
alignment menu item "21-01 TX CAR USB".
 Rotate the [ RF/SQL ] knob to set the parameter
is "255".
 Rotate the [ MULTI ] function knob to select the
alignment menu item "15-01 100W FALC 14".
 Press the PTT switch, then adjust the [ RF/SQL ]
knob for 102 W ±2.0 W on the Wattmeter.
 Set the USB mode.
 Set the MIC GAIN to "50".
 Connect the Audio Generator to pin 8 of the
Microphone jack (pin 7: GND).
 Rotate the [ MULTI ] function knob to select the
alignment menu item "23-01 ALC-MTR".
 Press the PTT switch, then adjust the Audio
Generator output level to the position where RF
Power output to 87 - 93 W on the Wattmeter.
 Release the PTT switch.
 Increase the Audio Generator output level by
"+10 dB".
 Press the PTT switch, then press the [ CLAR ]
key while pressing and holding in the PTT
switch.
 Rotate the [ RF/SQL ] knob for maximum
deflection on the ALC meter zone, then press
the [ CLAR ] key, while pressing and holding in
the PTT switch.
 Release the PTT switch, then press and hold in
the [ F ] key to save the new setting and exit the
alignment mode.
TX Output Power/PO Meter/TXG
Adjustment
 Referring to table below, tune the transceiver to
each frequency listed.
B
1.8 MHz Band
3.5 MHz Band
7 MHz Band
10 MHz Band
14 MHz Band
18 MHz Band
21 MHz Band
24 MHz Band
28 MHz Band
50 MHz Band
 C o n n e c t t h e 5 0 - O h m D u m m y L o a d a n d
Wattmeter to the ANT jack.
 Connect the Microphone to the Microphone
jack.
 Press and hold in the [ A ] , [ B ] and [ C ] keys,
w h i l e t u r n i n g t h e r a d i o o n , t o e n t e r t h e
alignment mode.
 Rotate the [ MULTI ] function knob to select the
alignment menu item to "11-01 100W FALC 1.8".
 Press and hold the PTT switch, then rotate
the [ RF/SQL ] knob for 102 W ±2W on the
Wattmeter.
 Release the PTT switch.
 Rotate the [ MULTI ] function knob to select the
alignment menu item to "11-02 MTR 1.8".
 Press and hold the PTT switch, then rotate the
[ RF/SQL ] knob for 100 W on the PO meter.
 Release the PTT switch.
 Rotate the [ MULTI ] function knob to select the
alignment menu item to "11-03 100W TXG 1.8".
 Press and hold the PTT switch, then rotate the
[ RF/SQL ] knob for maximum deflection on the
ALC meter zone.
Note: If the ACL meter cannot deflect to the
maximum, rotate the [ RF/SQL ] knob to
set the parameter to "200".
 Release the PTT switch.
 Perform the same procedures for the Alignment
Menu Items "11-04 50W FALC 1.8" through
"11-15 5W TXG 1.8" per the chart at the below.
ALIGNMENT-14
Alignment
VFO-a F
and requency
1.8500 MHz
3.7500 MHz
7.1000 MHz
10.1200 MHz
14.1500 MHz
18.1300 MHz
21.2000 MHz
24.9415 MHz
28.8500 MHz
51.5000 MHz
FT-891 Technical Supplement
M
Ode
CW-USB
CW-USB
CW-USB
CW-USB
CW-USB
CW-USB
CW-USB
CW-USB
CW-USB
CW-USB