26
5RECEIVE AND TRANSMIT
■Notch function
This transceiver has auto and manual notch func-
tions. The auto notch function automatically attenu-
ates 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 [NOTCH] to toggle the notch function be-
tween auto, manual and OFF in SSB and AM
modes.
➥Push [NOTCH] to turn the manual notch function
ON and OFF in CW mode.
➥Push [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.
•“AN” appears when auto notch is in use.
•“MN” appears when manual notch is in use.
While operating the manual notch, noise may be
heard. This comes from the DSPunit and does not
indicate an equipment malfunction.
Unwanted tone
frequency
Desired
signal (AF) Desired
signal (AF)
Particular frequency
is attenuated
Auto notch OFF Auto notch ON
■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.
qPush the [NR] switch to turn the noise reduction
ON.
•[NR] indicator lights.
wRotate the [NR] control to adjust the noise reduc-
tion level.
ePush the [NR] switch to turn the noise reduction
OFF.
•[NR] indicator lights off.
Deep rotation of the [NR] control results in audio
signal masking or distortion. Set the [NR] control
for maximum readability.
BAL NR
Noise reduction OFF Noise reduction activated
Desired
signal (CW)
Noise components
BAL NR