Notch Filter; Selecting The Notch Filter Type; Setting The Manual Notch Filter - Icom IC-705 Basic Manual

Notch Filter

SSB, CW, RTTY, AM, and FM modes
The IC-705 has Auto Notch and Manual Notch
functions.
Auto Notch automatically attenuates beat tones,
tuning signals, and so on. It can be used in the
SSB, AM, and FM modes.
Manual Notch attenuates beat tones, tuning
signals, and so on by manually adjusting the
filtering frequency. It can be used in the SSB,
CW, RTTY, and AM modes.
DSelecting the Notch filter type
1. Push .
• Opens the FUNCTION screen.
2. Touch [NOTCH].
LTouching [NOTCH] changes between "AN
(Auto Notch)," "MN (Manual Notch)," and OFF.
3. To close the FUNCTION screen, push
DSetting the Manual Notch filter
When Manual Notch is selected, adjust the
filtered frequency.
1. Push
• Opens the FUNCTION screen.
2. Touch [NOTCH] for 1 second.
• Opens the NOTCH menu.
• The Manual Notch is automatically selected,
3. Touch [WIDTH] several times to select the
Manual Notch filter width from "WIDE,"
"MID," and "NAR."
.
4. Rotate
Displayed
when a
the frequency.
notch filter is
5. To close the NOTCH menu, push
selected.
NOTE: While adjusting, noise may be heard.
This comes from the FPGA and does not
indicate an equipment malfunction.
4-6
RECEIVING AND TRANSMITTING
.
and "MN" is displayed.
slowly, to manually attenuate
4
4
.