Icom IC-7300, Основное руководство

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4
RECEIVING AND TRANSMITTING
4-6
NoiseReduction
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
NR
to turn the Noise Reduction function ON or
OFF.
Displayed
D
AdjustingtheNoiseReductionlevel
Adjust the Noise Reduction level to where noise is
reduced and the received signal is not distorted.
1. Hold down
NR
for 1 second.
• 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.
Rotate
Push
NoiseReductionOFF
NRlevel0
NoiseReductionON
NRlevel4
Noise components Desired signal (CW)
Notch Filter
The IC-7300 has Auto Notch and Manual Notch
functions.
AutoNotch: UsedintheSSB,AMandFMmodes.
ManualNotch:UsedintheSSB,CW,RTTYandAM
modes.
D
Auto Notch function
Auto Notch automatically attenuates beat tones,
tuning signals and so on.
Push
NOTCH
until “AN (Auto Notch)” is displayed.
L
Pushing
NOTCH
changes between “AN (Auto Notch),”
“MN (Manual Notch)” and OFF.
Displayed
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
NOTCH
for 1 second to display the
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.
Rotate
Push