Functions For Receive; D Squelch Function; D Noise Blanker; D Agc Off Function - Icom IC-M710 Instruction Manual

■ Functions for receive

D Squelch function

The squelch function detects signals with voice com-
ponents and squelches (mutes) unwanted signals,
such as unmodulated beat signals. This provides
quiet standby.
When you need to receive weak signals, the squelch
should be turned OFF.

D Noise blanker

The noise blanker function reduces pulse type noise,
such as that coming from engine ignitions.
The noise blanker may distort reception of strong
signals. In such cases, the noise blanker should be
turned OFF.

D AGC OFF function

The receiver gain is automatically adjusted accord-
ing to the received signal strength with the AGC (Au-
tomatic Gain Control) function, to prevent distortion
from strong signals and to obtain a constant output
level.
When receiving weak signals with adjacent strong
signals or noise, the AGC function may reduce the
sensitivity. In this situation, the AGC function should
be deactivated.

D RF gain setting

The receiver gain can be reduced with the RF gain
setting. This may help to remove undesired weak sig-
nals while monitoring strong signals.
Usually the AGC function reduces the RF gain ac-
cording to the receive signal strength and these weak
signals are removed. However, during periods of no
signals, these weak signals may not be heard.
In such cases, the RF gain may be useful for setting
a minimum level at which to hear signals.

D Clarity control

Voice signals received from other stations may be
difficult to receive. This may sometimes happen if a
station is transmitting slightly off frequency. In such
cases, vary the receive frequency only, using the
[CLARITY] control.
RECEIVE AND TRANSMIT
Push [SQL] to toggle the function ON or OFF.
•
D U P
"SQL" appears when the squelch function is ON (noise is muted).
Push [NB] to toggle the function ON or OFF.
•
RX
D U P
"NB" appears when the noise blanker is ON.
Push [AGC] to toggle the function ON or OFF.
•
RX
Appears when the [AGC] switch is ON
(AGC function deactivates).
q Push [FUNC] then [RX] to call up the following dis-
play.
w Rotate the [CHANNEL] selector to set the desired
minimum cutting level.
"0" to "9" are available.
•
S-meter shows the minimum permited level.
•
e Push [FUNC] or [CE] to exit the RF gain display.
• Adjust [CLARITY] to improve the audio signal.
4
S QL
N B
AGC AGC
[CLARITY]
10