Yaesu Musen Co. Ltd. 20651X50 User Manual
21
Advanced Operation
FT-891 Operating Manual
Notch Filter
The DSP system’s Notch Filter may be helpful in removing one or more offending carrier
or heterodyne signals from the audio passband.
1. Rotate the
or heterodyne signals from the audio passband.
1. Rotate the
MULTI knob, as needed, until
Multi Function Row “
F-05 [SHIFT] [WIDTH]
[NOTCH]”.
2. Press the [
C](NOTCH) key to activate the
Notch Filter. The “” icon will appear at the left
side of the “DNF” indication, and the “” nota-
tion will appear at the top on the display. You
will notice that the audio level of the carrier
signal is now being reduced.
side of the “DNF” indication, and the “” nota-
tion will appear at the top on the display. You
will notice that the audio level of the carrier
signal is now being reduced.
3. Rotate the
MULTI knob to adjust the “null” position of the Notch filter.
4. Press the [
C](DNF) key once more to turn the Notch Filter off.
Application for FCC / IC
FCC ID: K6620651X50 / IC: 511B-20651X50