I Noise Reduction; I Notch Function; I Dial Lock Function - Icom IC-746PRO Instruction Manual

5
FUNCTIONS FOR RECEIVE

I Noise reduction

The noise reduction function reduces noise compo-
nents and picks out desired signals which are buried
in noise. The received signals are converted to digital
signals and then the desired signals are separated
from the noise.
q Push the [NR] switch to turn the noise reduction
ON.
• "NR" appears.
w Rotate the [NR] control to adjust the noise reduction
level.
e Push the [NR] switch to turn the noise reduction
OFF.
• "NR" disappears.
Deep rotation of the [NR] control results in audio sig-
nal masking or distortion. Set the [NR] control for
maximum readability.

I Notch function

This transceiver has auto and manual notch functions.
The auto notch function automatically attenuates more
than 3 beat tones, tuning signals, etc., even if they are
moving. The manual notch can be set to attenuate a
frequency via the [NOTCH] control.
➥ Push [A/NOTCH] to toggle the notch function be-
tween auto, manual and OFF in SSB and AM
modes.
➥ Push [A/NOTCH] to turn the manual notch function
ON and OFF in CW mode.
➥ Push [A/NOTCH] to turn the auto notch function ON
and OFF in FM mode.
• Set to attenuate a frequency for manual notch via the
[NOTCH] control.
• "A NOTCH" appears when auto notch is in use.
• "NOTCH" appears when manual notch is in use.
While operating the manual notch, noise may be
heard. This comes from the DSP unit and does not
indicate an equipment malfunction.

I Dial lock function

The dial lock function prevents accidental changes
caused by the tuning dial.
➥ Push [LOCK/SPCH] to turn the dial lock function ON
and OFF.
• "LOCK" indicator lights while the dial lock function is ac-
tivated.
53
[NR] [NR]
[A/NOTCH] [NOTCH]
Notch function indicators
Lights while the dial lock function is activated.
Appears
[LOCK/SPCH]