Djusting The Squelch Level; Djusting The Rf Gain - Icom IC-7850 Instruction Manual

4
BASIC OPERATION
■ Adjusting the Audio level
Rotate the [AF] control to adjust the audio output
➥
level.
• Set a suitable audio level.
Independently adjust the Main and Sub bands.
■ Adjusting the Squelch level
Noise squelch:
In the FM mode, rotate the [SQL] control and adjust to
the point where the noise just disappears and the RX
indicator goes OFF.
The noise squelch works only in the FM mode.
S-meter squelch:
The S-meter squelch disables the audio output from
the speaker or headphones when the received signal
is weaker than the specified level.
Rotate the [SQL] control clockwise from the 12 o'clock
position to adjust the S-meter level (threshold level).
The S-meter squelch works in all modes.
Independently adjust the Main and Sub bands.
• In the FM mode
Noise squelch
Squelch is
open
■ Adjusting the RF gain
The [RF] control adjusts the receiver sensitivity. This is
usually set for maximum sensitivity (maximum clock-
wise).
When you rotate the [RF] control counterclockwise, the
receive sensitivity decreases. At this time, the S-meter
indicates the relative sensitivity level.
If you do not want to receive signals or noises from
a nearby strong station, rotate the [RF] control to the
point the just a little lower than the S-meter level.
Independently adjust the Main and Sub bands.
S-meter squelch
[AF] MAIN, SUB
[SQL] MAIN, SUB
• In other than the FM mode
(SSB/CW/RTTY/PSK/AM)
Squelch is
open
[RF] MAIN, SUB
4-4
S-meter squelch