Function-1 - Yaesu FT-891 Operating Manual

Setting Modes

FUNCTION-1

MULTI
Knob
Enable/Disable the optional FC-40/FC-50 Automatic Antenna tuner or ATAS-120A
TNR Press
Auto Active-Tuning Antenna System.
Enable/Disable the VOX ( voice-operated transmitter switching system ) in the SSB,
VOX Press
AM, FM and DATA modes.
• Activate the speech processor for SSB transmissions, the processor level pop-up
PRC Press
• Press the MULTI function knob to turn the speech processor OFF.
• Activate the MONITOR feature, the monitor audio level pop-up screen will appear.
MON
Press
• Press the MULTI function knob to turn the MONITOR feature OFF.
Press Enable/Disable Split frequency operation between VFO-A and VFO-B.
SPL
Press and hold Sets a one-touch +5 kHz offset with respect to the VFO-B frequency.
Enable/Disable the receiver preamplifier, thereby activating Intercept Point Optimi-
IPO Press
zation for improved strong signal overload characteristics.
Enable/Disable the receiver front-end attenuator, which will reduce all signals and
ATT
Press
noise by approximately 12 dB.
NAR Press
Enable/Disable the low-deviation mode.
• Activate the receiver IF Noise Blanker, the blanker level pop-up screen will appear.
NB Press
• Press the MULTI function knob to turn the Noise Blanker OFF.
• Activate the IF SHIFT feature, the SHIFT adjustment pop-up screen will appear. Ro-
SFT
Press
• Press the MULTI function knob to turn the IF SHIFT feature OFF.
• Activate the WIDTH tuning feature, the WIDTH adjustment pop-up screen will ap-
WDH
Press
• Press the MULTI function knob to turn the WIDTH tuning feature OFF.
• Activate the IF NOTCH filter feature, the "null" position adjustment pop-up screen
NCH
Press
• 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 ) .
46
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.
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.
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.
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.
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.
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.
Function
FT-891 Operating Manual