Functions For Receive - Icom IC-M802 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 stand-by.
When you need to receive weak signals, turn OFF
the squelch.
➥ Push [F] then [2
sql
OFF.
• See page 50 for squelch level adjustment details.
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.
➥ Push [F] then [1 ] to turn the function ON or
nb
OFF.
• See page 50 for noise blanker level adjustment details.
D AGC OFF function
The receive 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 such cases, turn OFF the AGC func-
tion.
➥ Push [F] then [5
agc
OFF.
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, when no signal
is received, these weak signals may not be heard.
In such cases, the RF gain may be useful to set a
minimum level at which to hear signals.
] to turn the function ON or
×
] to turn the function ON or
RECEIVE AND TRANSMIT
• "SQL" appears when the squelch function is turned ON.
• "NB" appears when the NB function is turned ON.
• " A G C " appears when the AGC function is turned OFF.
q Push [F] then [6 -
rf g
mode, as shown below.
w Rotate [CH] to set the desired minimum cutting
level.
• "0 (low sensitivity)" to "9 (maximum sensitivity)" can be
set.
• The S-meter shows the minimum permitted level.
e Push any key to exit the RF gain set mode.
[F] [2 ]
SQL
[F] [1 ]
NB
[F] [5 ]
×
AGC
] to select the RF gain set
4
4
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