Notch Filter; D Auto Notch Function; D Manual Notch Function - Icom IC-7300 Basic Manual

4
RECEIVING AND TRANSMITTING
The Noise Reduction function reduces random noise
components and enhances desired signals that are
buried in noise. The Noise Reduction function uses
the DSP circuit.
NR
Push to turn the Noise Reduction function ON or
OFF.
D
Adjust the Noise Reduction level to where noise is
reduced and the received signal is not distorted.
1. Hold down for 1 second.
NR
• Turns ON the Noise Reduction function and opens the
NR menu.
2. Adjust the Noise Reduction level to between 0
and 15.
Adjust to a higher level to increase the reduction
level, and a lower level to decrease it.
Noise components
Displayed
Rotate
Push
Desired signal (CW)
4-6

Notch Filter

The IC-7300 has Auto Notch and Manual Notch
functions.
modes.

D Auto Notch function

Auto Notch automatically attenuates beat tones,
tuning signals and so on.
Push NOTCH until "AN (Auto Notch)" is displayed.
NOTCH
Pushing changes between "AN (Auto Notch),"
"MN (Manual Notch)" and OFF.

D Manual Notch function

The Manual Notch attenuates beat tones, tuning
signals and so on by adjusting a frequency in the
NOTCH menu.
1. Hold down for 1 second to display the
NOTCH
NOTCH menu.
• The Manual Notch is automatically selected and "MN"
is displayed.
Pushing [WIDTH] sets the Manual Notch filter width
to "WIDE," "MID" or "NAR."
2. Slowly adjust the POSITION to manually
attenuate the frequency.
NOTE While adjusting, noise may be heard.
This comes from the DSP unit and does not indicate
an equipment malfunction.
Displayed
Rotate
Push