Yaesu FT DX 9000 CONTEST - MANUAL 2 Operation Manual page 137

D
SQL Knobs ( Refer to VFO-A:
NB
NB Knob
This adjusts the VFO-B IF Noise Blanker level, when
the Noise Blanker is engaged via the NB switch,
described below.
SQL Knob
This knob provides adjustment of the VFO-B noise
Squelch system.
NB Switch ( except on FM mode )
( Refer to VFO-A:
This switch engages the VFO-B IF Noise Blanker.
Adjustment of the Noise Blanker level is provided by
the NB knob, described in the previous section.
SHIFT WIDTH Knobs
( except on FM mode )
( Refer to VFO-A:
SHIFT Knob
This knob adjusts the center frequency of the VFO-B
DSP filter, with an adjustment range of ± 1 kHz.
WIDTH Knob
This knob varies the width of the IF DSP filter for the
VFO-B.
CONT Switch ( Refer to VFO-A:
This is the On/Off switch for the VFO-B CONTOUR
filter. When engaged, the CONT LED will glow
Umber. Adjustment of the VFO-B CONTOUR filter's
frequency is provided by the CONT knob (described
in the next section).
CONT DNR
CONT ( Contour ) ( Refer to VFO-A:
This knob provides adjustment of the VFO-B CON-
TOUR filter frequency.
Advice
Use the Menu items "RX DSP 080 SUB-CON-
TOUR-LEVEL" and "RX DSP 081 SUB-CON-
TOUR-WIDTH" to configure the VFO-B CONTOUR
filter.
DNR Knob ( Refer to VFO-A:
This knob is used to select one of the 16 available
noise reduction parameters for the VFO-B Digital
Noise Reduction system.
FT 9000 C
DX ONTEST
R
UAL ECEIVE
F P
RONT ANEL
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O M
PERATION ANUAL
( RXU-9000 )
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ONTROLS
DNR Switch ( Refer to VFO-A:
This button turns the VFO-B Digital Noise Reduction
circuit on and off. When the Digital Noise Reduction
is activated, the LED inside the button will glow um-
ber. Adjustment of the Noise Reduction level is pro-
vided by the DNR knob, described in the previous
section.
DNF Switch ( Refer to VFO-A:
This switch is the On/Off switch for the VFO-B Digi-
tal Notch Filter. When turned On, the associated LED
glows Umber.
AF GAIN RF GAIN
( Refer to VFO-A:
AF GAIN Knob
This is the VFO-B Volume (AF GAIN) control.
RF GAIN Knob
This is the VFO-B RF GAIN control, which adjusts
the gain of the receiver's RF and IF amplifier stages.
This control is normally left in the fully clockwise
position.
AFL Switch ( Refer to VFO-A:
Pressing this button activates the Audio (AF) Limiter
circuit of the VFO-B. This will protect the audio am-
plifier from distortion, and protect your ears from high
audio levels, caused by sudden peaks in audio input
when the AGC is set to "OFF." When the Audio Lim-
iter circuit is activated, the LED inside the button will
glow Umber.
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