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20
Front Panel Controls & Switches
FT-891 Operating Manual
[
B
]
(
SCP
)
: The SCOPE function
The SCOPE function provides a spectrum display of the band conditions.
Press this key to display the band condition
(
spectrum
)
.
When the SCOPE function is active, the
[
A
]
/
[
B
]
/
[
C
]
keys are automatically changed
to the below operations.
[
A
](
SPN
)
key: This key changes the displayed bandwidth. Available selections
are 750 kHz, 375 kHz, 150 kHz, 75 kHz, or 37.5 kHz ranges.
[
B
](
SWP
)
key: Each time the
[
B
](
SWP
)
key is pressed, a new scan of the spec-
trum scope is shown on the LCD display.
The SWP icon blinking on the LCD is confirmation that the “Contin-
uous Sweeping mode” is running.
Since the FT-891 has only one receiver the audio will be muted while the spectrum
scope is scanning. To stop scanning and turn the receiver on, set the desired
frequency and press the
[
B
](
SWP
)
key again.
[
C
](
LV1-3
)
key: This key changes the gain.
While the Spectrum Scope is activated, Press the
MULTI function knob, and
then rotate it to adjust the operating frequency tuning steps of VFO-A by the 500
kHz.
[
C
]
(
NB
)
: Noise Blanker function
The IF Noise Blanker can significantly reduce the noise that is caused by automo-
tive ignition systems.
[
CLAR
]
key
During reception, press this key, and then rotate the
MULTI function knob to adjust
the VFO-A RX clarifier offset value up to ±9.998 kHz.
The clarifier offset value
(
frequency
)
can be restored to “0
(
zero
)
” by pressing the
MULTI function knob for more than one second.
NOTE: For details on the clarifier function, see “Clarifier
(
Offsets the receive frequen-
cy on the SSB/CW mode
)
” on page 33.
MAIN DIAL
This is the main tuning dial for the transceiver. Rotate this knob clockwise to increase
the operating frequency and rotate it counterclockwise to decrease the operating fre-
quency.
Pressing the
[
FAST
]
key will change the tuning of the MAIN DIAL to a higher
step rate.The frequency steps available are 10Hz and 100Hz per step
(
2kHz and
20kHz per rotation
)
.
● Pressing the
[
PWR/LOCK
]
key briefly will engage or release the DIAL knob lock.
AF Knob
The
(
inner
)
AF knob adjusts the receiver audio volume level of the internal or external
speaker. Clockwise rotation increases the volume level.
22


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