Yaesu FTDX9000D - DATA MANAGEMENT Operation Manual page 33

NB SQL Knobs
( Refer to Main ( VFO-A ) :
NB Knob
This adjusts the Sub band (VFO-B) receiver's IF
Noise Blanker level, when the Noise Blanker is en-
gaged via the [ NB ] switch, described below.
SQL Knob
This knob provides adjustment of the Sub band (VFO-
B) receiver's noise Squelch system.
NB Switch ( except on FM mode )
( Refer to Main ( VFO-A ) :
This switch engages the Sub band (VFO-B) IF Noise
Blanker. Adjustment of the Noise Blanker level is pro-
vided by the [ NB ] knob, described in the previous
section.
SHIFT WIDTH Knobs
( except on FM mode )
( Refer to Main ( VFO-A ) :
SHIFT Knob
This knob adjusts the center frequency of the Sub band
(VFO-B) receiver's DSP filter, with an adjustment
range of ± 1 kHz.
WIDTH Knob
This knob varies the width of the IF DSP filter for the
Sub band (VFO-B) receiver.
CONT Switch
( Refer to Main ( VFO-A ) :
This is the On/Off switch for the Sub band (VFO-B)
receiver's CONTOUR filter. When engaged, the
[ CONT ] LED will glow Orange. Adjustment of the
Sub band (VFO-B) CONTOUR filter's frequency is
provided by the [ CONT ] knob (described in the next
section).
Furthermore, in the CW mode, press and hold this
button for 2 seconds to activate the APF (Audio Peak
Filter) which provides a very narrow audio bandwidth;
the LED inside the button will glow umber for four
seconds every one second. The APF circuit is an au-
tomatic circuit, and there is no adjustment knob for
the APF.
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You may change the blinking pattern of the CONT
LED (glow umber for four seconds every one sec-
ond) when the APF feature is activated via Menu item
"DISPLAY 023 APF INDICATOR." See page 146
for details.
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CONT DNR
( Refer to Main VFO-A ) :
CONT ( Contour )
This knob provides adjustment of the Sub band (VFO-
B) receiver's CONTOUR filter frequency.
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The Sub band (VFO-B) frequency display will
show the CONTOUR frequency for 3 seconds
whenever the inner [ CONT ] knob is turned.
You may disable this feature (displaying the
CONTOUR frequency) via Menu item "DIS-
PLAY 022 LEVEL INDICATOR." See page
146 for details.
Use the Menu items "RX DSP 089 SUB-CON-
TOUR-LEVEL" and "RX DSP 090 SUB-CON-
TOUR-WIDTH" to configure the Sub band
(VFO-B) receiver's CONTOUR filter.
DNR Knob
This knob is used to select one of the 15 available
noise reduction parameters for the Sub band (VFO-
B) receiver's Digital Noise Reduction system.
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The Sub band (VFO-B) frequency display will show
the current noise reduction parameter for 3 seconds
whenever the outer [ DNR ] knob is turend.
You may disable this feature (displaying the current
noise reduction parameter) via Menu item "DISPLAY
022 LEVEL INDICATOR." See page 146 for details.
DNR Switch
( Refer to Main ( VFO-A ) :
This button turns the Sub band (VFO-B) Digital Noise
Reduction circuit on and off. When the Digital Noise
Reduction is activated, the LED inside the button will
glow umber. Adjustment of the Noise Reduction level
is provided by the [ DNR ] knob, described in the next
section.
DNF Switch ( Refer to Main ( VFO-A ) :
This switch is the On/Off switch for the Sub band
(VFO-B) receiver's Digital Notch Filter. When turned
On, the associated LED glows Orange.
AF GAIN RF GAIN
( Refer to Main ( VFO-A ) :
AF GAIN Knob
This is the Sub band (VFO-B) receiver's Volume (AF
GAIN) control.
RF GAIN Knob
This is the Sub band (VFO-B) receiver's 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
Pressing this button activates the Audio (AF) Limiter
circuit of the Sub band (VFO-B) receiver. This will
protect the audio amplifier from distortion, and pro-
tect your ears from high audio levels, caused by sud-
den peaks in audio input when the AGC is set to
"OFF." When the Audio Limiter circuit is activated,
the LED inside the button will glow orange.
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