Operation Manual

■ Noise reduction
The noise reduction function reduces random noise
components and enhances desired signals which are
buried in noise. The DSP performs the random noise
reduction function.
q Push [NR] to turn the noise reduction ON.
• The indicator on this switch lights green.
w Rotate the [NR] control to adjust the noise reduc-
tion level.
e Push [NR] to turn the noise reduction OFF.
• The indicator goes off.
Large rotations of the [NR] control results in audio
signal masking or distortion. Set the [NR] control
for maximum readability.
■ Dial lock function
The dial lock function prevents frequency changes
by accidental movement of the tuning dial. The lock
function electronically locks the dial.
➥ Push and hold [SPEECH/LOCK] for 1 sec. to tog-
gle the dial lock function ON and OFF.
• The [LOCK] indicator lights when the dial lock
function is in use.
• While split frequency operation is ON, the split lock
function may be turned ON. (p. 89)
NOTE: When “LOCK/SPEECH” is selected in
[[SPEECH/LOCK] Switch] item in others set mode,
pushing [SPEECH/LOCK] activates the dial lock
function. (p. 131)
[NR]
control
NR
Noise reduction OFF Noise reduction activated
Desired
signal (CW)
Noise components
[LOCK] indicator
SPEECH
LOCK
82
4
RECEIVE AND TRANSMIT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21