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Page 134 FT-991 OperaTing Manual
101 RTTY OUT LEVEL
Function: Sets the output level during the sending/re-
ceiving of data in RTTY mode.
Available Values: 0 - 100
Default Setting: 50
Description: Sets the data output level during the send-
ing/receiving of data in RTTY mode. The higher the
setting, the higher the output level becomes.
102 RTTY SHIFT FREQ
Function: Sets the shift width for RTTY mode.
Available Values: 170/200/425/850 (Hz)
Default Setting: 170Hz
Description: Sets the shift width for RTTY mode.
103 RTTY MARK FREQ
Function: Sets the mark frequency for RTTY mode.
Available Values: 1275/2125 (Hz)
Default Setting: 2125Hz
Description: Sets the mark frequency for RTTY mode.
104 SSB LCUT FREQ
Function: Sets the low-frequency cutoff audio filter in
SSB mode.
Available Values: OFF/100Hz - 1000Hz (50Hz/step)
Default Setting: 100Hz
Description: This is the low-frequency cutoff audio lter
in SSB mode.
The cutoff frequency can be set at 50 Hz increments
between 100 Hz and 1000 Hz.
105 SSB LCUT SLOPE
Function: Sets the slope of the low-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 low-fre-
quency cutoff audio lter in SSB mode.
106 SSB HCUT FREQ
Function: Sets the high-frequency cutoff audio lter in
SSB mode.
Available Values: OFF/700Hz - 4000Hz (50Hz/step)
Default Setting: 3000Hz
Description: This is the high-frequency cutoff audio l-
ter in SSB mode.
The cutoff frequency can be set at 50 Hz increments
between 700 Hz and 4000 Hz.
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 panel.
Menu MoDe
136


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