Page 60
FT-
991
Operating Manual
Tools for Comfortable and Effective Reception
Adjustable Receiver Audio Filter
The
FT-991A
includes an adjustable receiver audio filter, that provides precise, independent control of the low; and up
-
per audio ranges.
1. Press the
MENU
button to enter the Menu mode.
2. Rotate the
MULTI
knob to find Menu items “
041
”
through “
044
” these parameters apply to the adjust-
ment of the receiver audio filter in the AM mode,
Menu items “
050
” through “
053
” apply to the
adjustment of the RX audio filter in the CW mode,
Menu items “
066
” through “
069
” apply to the ad-
justment of the RX audio filter in the DATA mode,
Menu items “
092
” through “
095
” apply to the ad-
justment of the RX audio filter in the RTTY mode,
and Menu items “
102
” through “
105
” apply to the
adjustment of the RX audio filter in the SSB mode
3. Touch [
SELECT
] on the LCD.
MULTI Knob
MENU Button
F$QEV
#/ .% 6
7
'
(4 3
#/ .% 6
7
1
5. 2'
#/ *% 6
7
'
(4 3
1((
1((
4. Rotate the
MULTI
knob to adjust the receiver audio
response as desired.
5. Touch [
ENTER
] on the LCD to save the new set-
ting.
F$QEV
#/ .% 6
7
'
(4 3
#/ .% 6
7
1
5. 2'
#/ *% 6
7
'
(4 3
1((
*\
6. Press the
MENU
button or touch [
BACK
] on the
LCD to exit to normal operation.
Mode
Menu Item
Available Values
AM
041 AM LCUT FREQ
OFF/100(Hz) - 1000(Hz)
042 AM LCUT SLOPE
6dB/oct / 18dB/oct
043 AM HCUT FREQ
700(Hz) - 4000(Hz)/OFF
044 AM HCUT SLOPE
6dB/oct / 18dB/oct
CW
050 CW LCUT FREQ
OFF/100(Hz) - 1000(Hz)
051 CW LCUT SLOPE
6dB/oct / 18dB/oct
052 CW HCUT FREQ
700(Hz) - 4000(Hz)/OFF
053 CW HCUT SLOPE
6dB/oct / 18dB/oct
DATA
066 DATA LCUT FREQ
OFF/100(Hz) - 1000(Hz)
067 DATA LCUT SLOPE
6dB/oct / 18dB/oct
068 DATA HCUT FREQ
700(Hz) - 4000(Hz)/OFF
069 DATA HCUT SLOPE
6dB/oct / 18dB/oct
RTTY
092 RTTY LCUT FREQ
OFF/100(Hz) - 1000(Hz)
093 RTTY LCUT SLOPE
6dB/oct / 18dB/oct
094 RTTY HCUT FREQ
700(Hz) - 4000(Hz)/OFF
095 RTTY HCUT SLOPE
6dB/oct / 18dB/oct
SSB
102 SSB LCUT FREQ
OFF/100(Hz) - 1000(Hz)
103 SSB LCUT SLOPE
6dB/oct / 18dB/oct
104 SSB HCUT FREQ
700(Hz) - 4000(Hz)/OFF
105 SSB HCUT SLOPE
6dB/oct / 18dB/oct