Noise Reduction; D Adjusting The Noise Reduction Level; Notch Filter; D Auto Notch Function - Icom IC-7300 HF Plus Full Manual

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4
RECEIVING AND TRANSMITTING

Noise Reduction

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.
Push to turn the Noise Reduction function ON or
NR
OFF.

D Adjusting the Noise Reduction level

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.
L Adjust to a higher level to increase the reduction
level, and a lower level to decrease it.
Noise Reduction OFF
NR level 0
Noise components
Displayed
Rotate
Push
Noise Reduction ON
NR level 4
Desired signal (CW)
4-9

Notch Filter

The IC-7300 has Auto Notch and Manual Notch
functions.
Auto Notch: Used in the SSB, AM and FM modes.
Manual Notch: Used in the SSB, CW, RTTY and AM
modes.

D Auto Notch function

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

D Manual Notch function

The Manual Notch filters out 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.
L 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