Yaesu FT-891, Technical Supplement

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FT-891 Technical Supplement
Alignment
ALIGNMENT-14

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
and
VFO-a F
requency
M
Ode
1.8 MHz Band 1.8500 MHz CW-USB
3.5 MHz Band 3.7500 MHz CW-USB
7 MHz Band 7.1000 MHz CW-USB
10 MHz Band 10.1200 MHz CW-USB
14 MHz Band 14.1500 MHz CW-USB
18 MHz Band 18.1300 MHz CW-USB
21 MHz Band 21.2000 MHz CW-USB
24 MHz Band 24.9415 MHz CW-USB
28 MHz Band 28.8500 MHz CW-USB
50 MHz Band 51.5000 MHz CW-USB

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.