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21
Front Panel Controls & Switches
FT-891 Operating Manual
RF/SQL knob
Rotate this knob counter-clockwise to reduce the background noise and the system
gain. Rotate this knob fully clockwise to set the gain to the highest level for normal
operations. Counter-clockwise rotation will raise the start position of the S-Meter
indication. When receiving a strong signal, the noise is reduced and the signal is
emphasized.
Rotate this knob slightly counter-clockwise to the point where the “stationary” meter
indication is set just about the same as the receiver noise level.
This control may be changed to function as the squelch control by selecting SQL
on Menu Mode “05-05
[
RF/SQL VR
]
”.
NOTE:
For additional details, refer to the Advanced Manual which may be downloaded
from the Yaesu website.
MULTI function knob
This knob incorporates multiple tasks and makes it very convenient to operate the
various functions of the FT-891.
1 Adjusts the operating frequency of VFO-A in 500 kHz Steps
(
except the
for AM and FM modes
)
By pressing the MULTI function Knob momentarily until the
”is displayed, the
operating frequency steps of VFO-A may be adjusted in 500 kHz steps.
By rotating the DIAL knob while “
” is displayed, the 500 kHz step adjustment of the
MULTI function knob is canceled
(
the “
” indication will be returned to “
)
.
If you want to adjust the operating frequency steps of VFO-A by the 500 kHz again,
make sure that the “
” is displayed on the screen.
The operating frequency 500 kHz steps of VFO-A can be changed via Menu mode
14-01”
[
QUICK DIAL
]
2 Adjusts the operating frequency of VFO-B
By pressing MULTI function Knob momentarily until the “ ” is displayed, the operating
frequency of VFO-B may be adjusted.This function is convenient for changing the
transmit frequency on split operation.
3 Operates the
[
A
]
/
[
B
]
/
[
C
]
/
[
CLAR
]
key function
When the
[
A
]
key is assigned to the IF SHIFT function:
Pressing the
[
A
]
key will display the IF SHIFT pop-up screen, and then rotation of
the MULTI function Knob will adjust the DSP filter passband.
An indication mark is displayed to the left of the function key status icon.
Press and hold the MULTI function Knob to restore the IF SHIFT setting to factory
defaults.
When another function assigned to an
[
A
]
/
[
B
]
/
[
C
]
key has no setting that can be
adjusted by the MULTI function Knob, the
MULTI function Knob is not active.
4 Selects the Desired memory channel
When the “MEMORY CHANNEL” list screen is displayed, the desired memory channel
can be selected by rotating and pressing
MULTI function Knob.
23


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