Yaesu FT-891, Техническое дополнение

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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,
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 “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 mode.
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,
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 “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
alignment mode.