Yaesu FT-891 Technical Supplement

FT-891 Technical Supplement
Alignment
ALIGNMENT-5
1st Local Oscillator Adjustment

Connect the 3.5 mm Plug to KEY jack on the
transceiver.

Connect the RF millivoltmeter to TP1005 on the
MAIN Unit.

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 “02-01 Local 1.8”.

Press and hold the PTT switch, then rotate the
[
RF/SQL
]
knob so that the RF millivoltmeter
reading is “+11.0 dBm ±0.5 dBm” (Lot. 1-10) or
“+7.0 dBm ±0.5 dBm” (Lot. 11-).

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item “02-02 Local HFL”.

Press and hold the PTT switch, then rotate the
[
RF/SQL
]
knob so that the RF millivoltmeter
reading is “+10.0 dBm ±0.5 dBm” (Lot. 1-10) or
“+8.0 dBm ±0.5 dBm” (Lot. 11-).

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item “02-03 Local HFM”.

Press and hold the PTT switch, then rotate the
[
RF/SQL
]
knob so that the RF millivoltmeter
reading is “+10.0 dBm ±0.5 dBm” (Lot. 1-10) or
“+9.0 dBm ±0.5 dBm” (Lot. 11-).

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item “02-04 Local HFH”.

Press and hold the PTT switch, then rotate the
[
RF/SQL
]
knob so that the RF millivoltmeter
reading is “+10.0 dBm ±0.5 dBm” (Lot. 1-10) or
“+8.0 dBm ±0.5 dBm” (Lot. 11-).

Release the PTT switch.

Rotate the
[
MULTI
]
function knob to select the
alignment menu item “02-05 Local 50”.

Press and hold the PTT switch, then rotate the
[
RF/SQL
]
knob so that the RF millivoltmeter
reading is “+7.5 dBm - +8.0 dBm” (Lot. 1-10) or
“+7.0 dBm ±0.5 dBm” (Lot. 11-).

Release the PTT switch.
Alignment Menu Item
RF millivoltmeter
Lot. 1 - 10 Lot. 11 -
02-01 Local 1.8 +11.0 dBm ±0.5 dBm +7.0 dBm ±0.5 dBm
02-02 Local HFL +10.0 dBm ±0.5 dBm +8.0 dBm ±0.5 dBm
02-03 Local HFM +10.0 dBm ±0.5 dBm +9.0 dBm ±0.5 dBm
02-04 Local HFH +10.0 dBm ±0.5 dBm +8.0 dBm ±0.5 dBm
02-05 Local 50 +7.5 dBm - +8.0 dBm +7.0 dBm ±0.5 dBm

Disconnect the 3.5 mm Plug from KEY jack on
the transceiver.

Press and hold in the
[
F
]
key to save the new
setting and exit the alignment mode.
TP1005

Yaesu FT-891 Specifications

General

Brand	Yaesu
Model	FT-891
Category	Transceiver
Language	English