Page 47
FT-991 O
peraTing
M
anual
A
djuStAble
r
eceiver
A
udio
F
ilter
The
FT-991
includes an adjustable receiver audio filter, that provides precise, independent control of the low; and upper
audio ranges.
T
ools
for
C
oMforTable
and
e
ffeCTive
r
eCepTion
1. Press the
MENU
button to enter the Menu mode.
2. Rotate the
MULTI
knob to find Menu items “
040
”
through “
043
” 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 “
067
” through “
070
” 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.
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.
6. Press the
MENU
button or touch [
BACK
] on the
LCD to exit to normal operation.
M
ode
M
enu
i
teM
A
vAilAble
v
AlueS
AM
040 AM LCUT FREQ
OFF/100(Hz) ~ 1000(Hz)
041 AM LCUT SLOPE
6dB/oct / 18dB/oct
042 AM HCUT FREQ
700(Hz) ~ 4000(Hz)/OFF
043 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
067 DATA LCUT FREQ
OFF/100(Hz) ~ 1000(Hz)
068 DATA LCUT SLOPE
6dB/oct / 18dB/oct
069 DATA HCUT FREQ
700(Hz) ~ 4000(Hz)/OFF
070 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
MULTI Knob
MENU Button
Summary of Contents for FT-991
Page 2: ......
