Yaesu FT-891, Technical Supplement

Page: 17 / 99

FT-891 Technical Supplement
Alignment
ALIGNMENT-9
FIL Gain Adjustment

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 “06-01 R. FIL 3k”.

Rotate the [RF/SQL] knob to set the parameter
is “180”.

Rotate the [MULTI] function knob to select the
alignment menu item “06-02 R. FIL 15k”.

Rotate the [RF/SQL] knob to set the parameter
is “180”.

Press and hold in the [F] key to save the new
setting and exit the alignment mode.
S-meter Adjustment (FM)

Set the VFO-A frequency to 51.500 MHz in the
FM mode.

Connect the RF Signal Generator to the ANT
jack, then set the output level to 0 dBμ at
the 51.500 MHz with ±3.5 kHz deviation FM
modulation of a 1 kHz audio signal.

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 “07-01 FM S1”.

Rotate the [RF/SQL] knob so that the S-meter
reading is “S-1”.

Press the [CLAR] button to save the new
setting.

Set the RF Signal Generator to +20 dBμ.

Rotate the [MULTI] function knob to select the
alignment menu item “07-02 FM S9”.

Rotate the [RF/SQL] knob so that the S-meter
reading is “S-9”.

Press the [CLAR] button to save the new
setting.

Set the RF Signal Generator to +40 dBμ.

Rotate the [MULTI] function knob to select the
alignment menu item “07-03 FM S60”.

Rotate the [RF/SQL] knob so that the S-meter
reading is “S-9+60”.

Press the [CLAR] button to save the new
setting.

Press and hold in the [F] key to save the new
setting and exit the alignment mode.
FM Squelch Adjustment

Set the VFO-A frequency to 51.500 MHz in the
FM-WIDE mode.

Connect the RF Signal Generator to the ANT
jack, then set the output level to -8 dBμ at
the 51.500 MHz with ±3.5 kHz deviation FM
modulation of a 1 kHz audio signal.

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 “08-01 FM SQL TH”.

Press the [CLAR] button to save the new
setting.

Set the RF Signal Generator to +3 dBμ.

Rotate the [MULTI] function knob to select the
alignment menu item “08-02 FM SQL TI”.

Press the [CLAR] button to save the new
setting.

Press and hold in the [F] key to save the new
setting and exit the alignment mode.
FM Center Stop Adjustment

Set the VFO-A frequency to 51.500 MHz in the
FM-WIDE mode.

Connect the RF Signal Generator to the ANT
jack, then set the output level to +3 dBμ at the
51.497 MHz.

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 “09-01 FM CTR-Lo”.

Press the [CLAR] button to save the new
setting.

Set the RF Signal Generator to 51.503 MHz.

Rotate the [MULTI] function knob to select the
alignment menu item “09-02 FM CTR-Hi”.

Press the [CLAR] button to save the new
setting.

Press and hold in the [F] key to save the new
setting and exit the alignment mode.