Icom IC-705 - Notch Filter; Selecting the Notch Filter Type; Setting the Manual Notch Filter

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BASIC MANUAL
RECEIVING AND TRANSMITTING
4
4
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,
and “MN” is displayed.
3. Touch [WIDTH] several times to select the
Manual Notch filter width from “WIDE,”
“MID,” and “NAR.”
4. Rotate slowly, to manually attenuate
the frequency.
5. To close the NOTCH menu, push
.
NOTE: While adjusting, noise may be heard.
This comes from the FPGA and does not
indicate an equipment malfunction.
Displayed
when a
notch filter is
selected.