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

• Functions for receive
<>Squelch function
This function detects signals with voice components
and squelches (mutes) unwanted signals such as
non modulated beat signals. This provides quiet
stand by.
When you need to receive weak signals, the squelch
should be turned OFF.
<>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.
<>
AGC off function
The receiver gain is automatically adjusted accord-
ing to received signal strength with the AGC (Auto-
matic 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.
<> RF gain setting
The receiver gain can be reduced with the RF gain
setting. This may help to remove undesired weak
signals while monitoring strong signals.
Usually, the AGC function reduces the RF gain
according 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.
<> 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, compensate the receive frequency only, us-
ing the [CLARITY] control.
RECEIVE AND TRANSMIT
4
• Push [SQL] to turn the squelch function ON and
OFF.
DUP
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SQL
..._____
____
,_
"SQL"' appears when the squelch is ON (noise is muted).
• Push [NB] to turn the noise blanker function ON
and OFF.
DUP
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1-U"I
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N B
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"NB" appears when the noise blanker is ON.
• Push [AGC] to deactivate or activate the AGC
function.
'r r•
lll3 I Cl !..I
:·~ r~:
I
I : • -::·.
--~
Appears when the [AGC) switch is ON
(AGC function deactivates).
G) Push [FUNC] then [RX] to call up the following
display.
Cl
_I
,-,,- ,- ,-, T
II I
,., , . . -
·-,~,r-, ..L, ~•
®
Rotate the [CHANNEL] selector to set the de-
sired minimum cutting level.
- "0" to "9" are available.
- S-meter shows the minimum permitted level.
@ Push [FUN C) or [CE] to exit the RF gain display.
• Adjust [CLARITY] to improve the audio signal.
~[
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