46
Setting Modes
FT-891 Operating Manual
FUNCTION-1
MULTI
Knob
Function
TNR
Press
Enable/Disable the optional FC-40/FC-50 Automatic Antenna tuner or ATAS-120A
Auto Active-Tuning Antenna System.
VOX
Press
Enable/Disable the VOX
(
voice-operated transmitter switching system
)
in the SSB,
AM, FM and DATA modes.
PRC
Press
• Activate the speech processor for SSB transmissions, the processor level pop-up
screen will appear. Rotate the MULTI function knob to adjust the processor level
(
1 - 100
)
, then press the MULTI function knob to close the pop-up screen.
• Press the MULTI function knob to turn the speech processor OFF.
MON
Press
•
Activate the MONITOR feature, the monitor audio level pop-up screen will appear.
Rotate the MULTI function knob to adjust the monitor audio level
(
0 - 100
)
, then press
the MULTI function knob to close the pop-up screen.
• Press the MULTI function knob to turn the MONITOR feature OFF.
SPL
Press Enable/Disable Split frequency operation between VFO-A and VFO-B.
Press and hold
Sets a one-touch +5 kHz offset with respect to the VFO-B frequency.
IPO
Press
Enable/Disable the receiver preamplifier, thereby activating Intercept Point Optimi-
zation for improved strong signal overload characteristics.
ATT
Press
Enable/Disable the receiver front-end attenuator, which will reduce all signals and
noise by approximately 12 dB.
NAR
Press Enable/Disable the low-deviation mode.
NB
Press
•
Activate the receiver IF Noise Blanker, the blanker level pop-up screen will appear.
Rotate the MULTI function knob to adjust the noise blanker level
(
0 - 10
)
, then press
the MULTI function knob to close the pop-up screen.
• Press the MULTI function knob to turn the Noise Blanker OFF.
SFT
Press
•
Activate the IF SHIFT feature, the SHIFT adjustment pop-up screen will appear. Ro-
tate the MULTI function knob to the left or right to reduce interfering signals
, then
press the MULTI function knob to close the pop-up screen.
• Press the MULTI function knob to turn the IF SHIFT feature OFF.
WDH
Press
• Activate the WIDTH tuning feature, the WIDTH adjustment pop-up screen will ap-
pear. Rotate the MULTI function knob counter-clockwise to narrow the bandwidth
and reduce interference, then press the MULTI function knob to close the pop-up
screen.
• Press the MULTI function knob to turn the WIDTH tuning feature OFF.
NCH
Press
• Activate the IF NOTCH filter feature, the “null” position adjustment pop-up screen
will appear. Rotate the MULTI function knob to adjust the “null” position of the
Notch filter, then press the MULTI function knob to close the pop-up screen.
• Press the MULTI function knob to turn the IF NOTCH filter feature OFF.
NOTE: For details, refer to the Advanced Manual
(
download from the Yaesu website
)
.