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Page 134 FT-
991
OperaTing Manual
Menu MODe
107 SSB HCUT SLOPE
Function: Sets the slope of the high-frequency cutoff au-
dio lter in SSB mode.
Available Values: 6dB/oct / 18dB/oct
Default Setting: 6dB/oct
Description: Selects the slope setting of the high-fre-
quency cutoff audio lter in SSB mode.
108 SSB MIC SELECT
Function: Selects the microphone input jack for SSB
mode.
Available Values: MIC/REAR
Default Setting: MIC
Description: Selects the microphone input jack to be
used in SSB mode.
FRONT: Inputs from the
MIC
jack on the front
panel.
DATA: Disables the microphone circuit on the
front panel and inputs from the
USB
jack or
RTTY/DATA
jack on the rear
panel.
109 SSB OUT LEVEL
Function: Sets the level of the SSB receiving signal out-
put from the
RTTY/DATA
jack.
Available Values: 0 - 100
Default Setting: 50
110 SSB PTT SELECT
Function: Sets the PTT transmit control for the SSB sig-
nal.
Available Values: DAKY/RTS/DTR
Default Setting: DAKY
Description: Selects the PTT transmit control method for
the SSB signal.
DAKY: Controls the transmit signal from the
RTTY/DATA
jack
(
pin 3
)
on the rear
panel.
DTR: Controls the transmit signal from the USB
virtual COM/DTR ports.
RTS: Controls the transmit signal from the USB
virtual COM/RTS ports.
111 SSB PORT SELECT
Function: Sets the input jack of the SSB signal.
Available Values: DATA/USB
Default Setting: DATA
Description: Selects the input jack of the SSB signal
when
108 SSB MIC SELECT
is set to
DATA
”.
DATA: Inputs from the
RTTY/DATA
jack on the
rear panel.
USB: Inputs from the
USB
jack on the rear pan-
el.
112 SSB TX BPF
Function: Sets the frequency characteristics of the DSP
band-pass lter for transmitting in SSB mode.
Available Values: 100-3000/100-2900/200-2800/300-
2700/400-2600
Default Setting: 300-2700Hz
Description: Selects the frequency characteristics setting
of the DSP band-pass lter when transmit-
ting in SSB mode.
113 APF WIDTH
Function: Sets the bandwidth of the audio peak lter.
Available Values: NARROW/MEDIUM/WIDE
Default Setting: MEDIUM
Description: In CW mode the APF peak center fre-
quency is set according to the CW PITCH
frequency and the chosen APF bandwidth
value. In order to listen to the desired signal
comfortably, select one of the three band-
widths of the peak lter.
114 CONTOUR LEVEL
Function: Adjusts the GAIN of the CONTOUR circuit.
Available Values: −40 - 0 - 20
Default Setting: −15
Description: Sets level of the attenuation or the gain of
the CONTOUR circuit.
115 CONTOUR WIDTH
Function: Sets the bandwidth
(
“Q”
)
of the CONTOUR
circuit.
Available Values: 1 - 11
Default Setting: 10
Description: Sets the bandwidth
(
WIDTH
)
of the CON-
TOUR circuit.
116 IF NOTCH WIDTH
Function: Sets the attenuation bandwidth characteristic
of the DSP IF notch lter on the VFO-A.
Available Values: NARROW/WIDE
Default Setting: WIDE
Description: Selects the attenuation bandwidth charac-
teristic setting of the DSP IF notch lter to
NARROW
” or “
WIDE
”.
117 SCP DISPLAY MODE
Function: Sets the scope for either the spectrum or the
waterfall display.
Available Values: SPECTRUM/WATER FALL
Default Setting: SPECTRUM
Description: Selects the type of display when the scope
feature activates.
SPECTRUM: Enables the spectrum display.
WATER FALL: Enables the water-
fall display.
136


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