Yaesu FTDX9000MP Operation Manual page 31

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 pro-
vided by the [ CONT ] knob (#
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 blink umber for 3 sec-
onds, then replaces to continuous glow. The APF cir-
cuit is an automatic circuit, and there is no adjustment
knob for the APF.
CONT DNR
CONT ( Contour ) ( Refer to Main ( VFO-A ) :
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 5 seconds
whenever the inner [ CONT ] knob is turned.
You may disable this feature (displaying the CON-
TOUR frequency) via Menu item "DISPLAY 022
LEVEL INDICATOR." See page 148 for details.
Use the Menu items "RX DSP 085 SUB-CON-
TOUR-LEVEL" and "RX DSP 086 SUB-CON-
TOUR-WIDTH" to configure the Sub (VFO-B)
band recevier's CONTOUR filter.
DNR Knob ( Refer to Main ( VFO-A ) :
This knob is used to select one of the 15 available
noise reduction parameters for the Sub band (VFO-
B) recevier's Digital Noise Reduction system.
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The Sub band (VFO-B) frequency display will show
the current noise reduction parameter for 5 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 148 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 (#
FT 9000MP O
DX PERATION
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M
ANUAL
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ONT ANEL ANEL
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 Umber.
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 ( Refer to Main ( VFO-A ) : )
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.
RF PWR BIAS Knobs
RF PWR Knob
This is the main RF Power output control for the trans-
ceiver, active in all operating modes. Clockwise rota-
tion increases the power output. Adjust this control
for the desired power output from the FT
or for the desired system output when using a linear
amplifier or transverter.
BIAS Knob
During SSB operation, pressing the [ CLASS-A ] but-
ton (# below) will lower the power putput to a
maximum of 100 Watts, and the [ BIAS ] control will
then provide adjustment of the final amplifier Bias
level between classes AB and A. Full Class-A opera-
tion provides an ultra-clean SSB wafe-form. Because
Class A is a high-bias, low-efficiency mode, you should
monitor the heat sink temperature (using the "SWR"
page on the External Display periodically to ensure
that the operating temperature is within the safe range,
and you may adjust the Bias level more toward the
"AB" side if the heat sink gets too warm. The power
output will not change if you adjust the setting of the
BIAS control.
CLASS-A Switch
Pressing this switch engages the Class-A capability
for the transmitter. The power output will be reduced
to a maximum of 100 Watts, and the Bias level may
be adjusted using the [ BIAS ] control (#
described in the previous section. When Class-A
opeatin is engaged, the Red LED inside this switch
will light up. Press this switch once more to return to
Class AB operation at a maximum power output of
400 Watts; the Red LED will shut off to confirm Class
AB operation.
C C C C C
ONTR OLS ONTR ONTR OLS OLS OLS
ONTR ONTR OLS
9000MP,
DX
above),
Page 29