Icom IC-7100 [51/96] L clockwise when no signal is re ceived until the noise just disappears

Icom IC-7100 [51/96] L clockwise when no signal is re ceived until the noise just disappears
3
BASIC OPERATION
3-19
Squelch and receive (RF) sensitivity
Adjusts the RF gain and squelch threshold level. The
squelch removes noise output to the speaker when no
signal is received (closed squelch).
•ThesquelchisparticularlyeffectiveforAMandFM,butalso
works in other modes.
•The12to1o’clockpositionisrecommendedforthemost
effectiveuseofthe[RF/SQL]
(L) control.
•The [RF/SQL]
(L) control operates as only an RF gain
control (Squelch is fixed open), or a squelch control (RF
gain is fixed at maximum sensitivity) depending on the
“RF/
SQLControl”optionin
the “Function” Set mode. (p. 6-5)
SET
> Function > RF/SQL Control
SET MODE
SETTING
OPERATING
MODE
[RF/SQL]
OPERATION
AUTO
AM/FM/WFM/
DV
Operates as only a squelch
control.
•RF gain is xedatmaxi-
mum sensitivity.
SSB/CW/RTTY
Operates as only an RF
gain control.
•Squelchisxedopen.
SQL
ALL
Operates as only a squelch
control.
•RF gain is xedatmaxi-
mum sensitivity.
RF+SQL
(default)
FM/DV
Operates as an RF gain
control, and a noise squelch
or S-meter squelch.
SSB/CW/RTTY/
AM
Operates as an RF gain
control, and an S-meter
squelch.
Adjusting RF gain (Receive sensitivity)
Normally,[RF/SQL] (L) is set to the 12 o’clock posi-
tion.
Rotate [RF/SQL] (L) to the 11 o’clock position for
maximum sensitivity.
•Rotating counterclockwise from the maximum position re-
duces sensitivity.
•TheS-meterindicatesreceivesensitivity.
While rotating the RF gain control, a faint noise may
be heard. This comes from the DSP unit and does
not indicate an equipment malfunction.
Adjusting squelch (Removing non-signal noise)
Rotate[RF/SQL] (L) clockwise when no signal is re-
ceived, until the noise just disappears.
•TheTX/RXLEDlightgoesout.
•Rotating[RF/SQL]
(L) past the threshold point activates
the S-meter squelch— this allows you to set a minimum sig-
nal level needed to open the squelch.
[RF/SQL]
When used as an RF gain/squelch control
When used as an RF gain control
(Squelch is fixed open; SSB, CW, RTTY only)
When used as a squelch control
(RF gain is fixed at maximum.)
Maximum
RF gain
S-meter
squelch
Noise squelch (FM/DV modes)
Squelch is
open.
RF gain
adjustable
range
Recommended level
Minimum RF gain
Adjustable
range
Maximum
RF gain
Squelch is
open.
S-meter
squelch
S-meter squelch
threshold
Noise squelch
threshold
(FM/DV modes)
Shallow Deep
Noise squelch (FM/DV modes)
The L, R, C or D in the instructions indicate the
part of the controller.
L: Left side, R: Right side, C: Center bottom
D: Display (Touch screen)

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