Adjustable Receiver Audio Filter - Yaesu FT-991A 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.
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Mode Menu Item
041 AM LCUT FREQ
042 AM LCUT SLOPE
AM
043 AM HCUT FREQ
044 AM HCUT SLOPE
050 CW LCUT FREQ
051 CW LCUT SLOPE
CW
052 CW HCUT FREQ
053 CW HCUT SLOPE
066 DATA LCUT FREQ
067 DATA LCUT SLOPE
DATA
068 DATA HCUT FREQ
069 DATA HCUT SLOPE
092 RTTY LCUT FREQ
093 RTTY LCUT SLOPE
RTTY
094 RTTY HCUT FREQ
095 RTTY HCUT SLOPE
102 SSB LCUT FREQ
103 SSB LCUT SLOPE
SSB
104 SSB HCUT FREQ
105 SSB HCUT SLOPE
MENU Button
MULTI Knob
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.
Available Values
OFF/100 ( Hz ) - 1000 ( Hz )
6dB/oct / 18dB/oct
700 ( Hz ) - 4000 ( Hz ) /OFF
6dB/oct / 18dB/oct
OFF/100 ( Hz ) - 1000 ( Hz )
6dB/oct / 18dB/oct
700 ( Hz ) - 4000 ( Hz ) /OFF
6dB/oct / 18dB/oct
OFF/100 ( Hz ) - 1000 ( Hz )
6dB/oct / 18dB/oct
700 ( Hz ) - 4000 ( Hz ) /OFF
6dB/oct / 18dB/oct
OFF/100 ( Hz ) - 1000 ( Hz )
6dB/oct / 18dB/oct
700 ( Hz ) - 4000 ( Hz ) /OFF
6dB/oct / 18dB/oct
OFF/100 ( Hz ) - 1000 ( Hz )
6dB/oct / 18dB/oct
700 ( Hz ) - 4000 ( Hz ) /OFF
6dB/oct / 18dB/oct
FT- 991 Operating Manual