Yaesu FT-891 Technical Supplement

FT-891 Technical Supplement
Alignment
ALIGNMENT-6
MCF Adjustment

Set the VFO-A frequency to 14.200 MHz in the
CW-USB mode.

Set the following controls as indicated:
[
IPO
]
: ON
[
ATT
]
: OFF
[
AGC
]
: AUTO
[
RF GAIN
]
: Fully clockwise

Connect the AF millivoltmeter and 4 Ohm
dummy load to the EXT SP jack.

Connect the RF Signal Generator to the ANT
jack, then set the output level to +10 dBμ at the
14.200 MHz.

Adjust T1011 and T1012 on the MAIN Unit
in succession several times for maximum
deflection on the AF millivoltmeter.
Note: If the S-meter deflects while adjusting,
reduce the RF Signal Generator output so
that the S-meter does not deflect.
IF Trap Adjustment

Set the VFO-A frequency to 51.900 MHz in the
CW-USB mode.

Set the following controls as indicated:
[
IPO
]
: ON
[
ATT
]
: OFF
[
AGC
]
: AUTO
[
RF GAIN
]
: Fully clockwise

Connect the AF millivoltmeter and 4 Ohm
dummy load to the EXT SP jack.

Connect the RF Signal Generator to the ANT
jack, then set the output level to +40 ~ +80 dBμ
at the 69.450 MHz.

Adjust T1005 on the MAIN Unit for minimum
deflection on the AF millivoltmeter.
Note: If the S-meter deflects while adjusting,
reduce the RF Signal Generator output so
that the S-meter does not deflect.
T1011 T1012 T1005

Yaesu FT-891 Specifications

General

Brand	Yaesu
Model	FT-891
Category	Transceiver
Language	English