Yaesu FT-891 Technical Supplement

FT-891 Technical Supplement
Alignment
ALIGNMENT-18
REV-ALC Adjustment

Connect the 16.6-Ohm Dummy Load to the
ANT jack.

Connect the Microphone to the Microphone
jack.

Press and hold in the
[
A
]
,
[
B
]
and
[
C
]
keys,
while turning the radio on, to enter the
alignment mode.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item to “22-01 REV ALC 1.8”.

Set the VFO-A frequency to 1.850 MHz in the
CW mode.

Press and hold the PTT switch, then rotate
the
[
RF/SQL
]
knob for 50 W ±3 dot on the PO
meter.

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item to “22-02 REV ALC HFL”.

Set the VFO-A frequency to 7.100 MHz in the
CW mode.

Press and hold the PTT switch, then rotate
the
[
RF/SQL
]
knob for 50 W ±3 dot on the PO
meter.

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item to “22-03 REV ALC HFM”.

Set the VFO-A frequency to 14.150 MHz in the
CW mode.

Press and hold the PTT switch, then rotate
the
[
RF/SQL
]
knob for 50 W ±3 dot on the PO
meter.

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item to “22-04 REV ALC HFH”.

Set the VFO-A frequency to 21.200 MHz in the
CW mode.

Press and hold the PTT switch, then rotate
the
[
RF/SQL
]
knob for 50 W ±3 dot on the PO
meter.

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item to “22-05 REV ALC 50”.

Set the VFO-A frequency to 51.500 MHz in the
CW mode.

Press and hold the PTT switch, then rotate
the
[
RF/SQL
]
knob for 50 W ±3 dot on the PO
meter.

Release the PTT switch, then press and hold in
the
[
F
]
key to save the new setting and exit the
alignment m
ode.
FM MAX Deviation Adjustment

Connect the Dummy Load, Wattmeter, and
Deviation Meter to the ANT Jack.

Set the MIC GAIN to “50”.

Press and hold in the
[
A
]
,
[
B
]
and
[
C
]
keys,
while turning the radio on, to enter the
alignment mode.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item to “23-02 FM DEV”.

Set the VFO-A frequency to 28.850 MHz in the
FM mode.

Connect the Audio Generator to pin 8 of the
Microphone jack (pin 7: GND), then set the
output level to 5.0 mV @1 kHz.

Press and hold the PTT switch, then rotate the
[
RF/SQL
]
knob for 4.5 kHz ±0.2 kHz on the
Deviation Meter.

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item to “23-03 FM-N DEV”.

Press and hold the PTT switch, then rotate the
[
RF/SQL
]
knob for 2.25 kHz ±0.1 kHz on the
Deviation Meter.

Release the PTT switch, then press and hold in
the
[
F
]
key to save the new setting and exit the
alignme
nt mode.

Yaesu FT-891 Specifications

General

Brand	Yaesu
Model	FT-891
Category	Transceiver
Language	English