Icom IC-9100 User Manual

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PANEL DESCRIPTION
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o MAIN BAND RF GAIN CONTROL/
SQUELCH CONTROL [RF/SQL]
(outercontrol;p.44)
Rotate to adjust the RF gain and squelch threshold
level for the MAIN Band.
The squelch removes noise output to the speaker
when no signal is received. (closed condition)
 •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] control.
 •[RF/SQL] operates as only an RF gain control in SSB,
CWandRTTY(Squelch is fixed open), or a squelch
control in AM, FM and DV (RF gain is fixed at maxi-
mum sensitivity), when “Auto” is selected as the
“RF/
SQL Control” item option in
the Set mode. (p. 162)
• When used as an RF gain/squelch control
Maximum
RF gain
S-meter
squelch
Noise squelch (FM/DV modes)
Squelch is
open.
RF gain
adjustable
range
Recommended level
• When used as an RF gain control
(Squelchisxedopen;SSB,CWandRTTYonly)
Minimum RF gain
Adjustable
range
Maximum
RF gain
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.
• When used as a squelch control
(RF gain is fixed at maximum.)
Squelch is
open.
S-meter
squelch
S-meter squelch
threshold
Noise squelch
threshold
(FM mode)
Shallow Deep
Noise squelch (FM/DV modes)
!0 MAIN BAND AF CONTROL [AF]
(innercontrol;p.45)
Rotate to adjust audio output level to the speaker or
headphones on the MAIN Band.
Increases
Decreases
!1 NOTCH SWITCH [NOTCH] (p. 77)
(Mode = Auto notch : SSB/AM/FM
Manual notch : SSB/CW/RTTY/AM)
➥ In the SSB and AM modes, push to toggle the
notch function between auto, manual and OFF.
   •EithertheAutoorManualnotchfunctioncanbe
turned OFF in
the “[NOTCH] SW” item of the Set
mode. (p. 36)
➥ In the FM mode, push to turn the Auto Notch
function ON or OFF.
➥ In the CWorRTTY mode, push to turn the Man-
ual Notch function ON or OFF.
  •“MNF”appearswhentheManualNotchfunctionis
ON.
  •“ANF”appearswhentheAutoNotchfunctionisON.
  •NoindicatorappearswhenthenotchlterisOFF.
➥ Hold down for 1 second to switch the manual
filter characteristics from wide, mid and narrow,
when the Manual Notch function is selected.
✔ What is the notch filter?
The notch filter is a narrow filter that eliminates un-
wanted CW or AM carrier tones, while preserving
the desired voice signal. The DSP circuit automati-
cally adjusts the notch frequency to effectively elim-
inate unwanted tones.
!2 MANUAL NOTCH FILTER CONTROL [NOTCH]
(outercontrol;p.77)
Rotate to adjust the notch frequency to reject an
interfering signal while the manual function is ON.
 •Notchltercenterfrequency:
 SSB/RTTY :–1040Hzto+4040Hz
CW : CW pitch freq. –2540 Hz to
CW pitch freq. +2540 Hz
AM : –5060 Hz to +5100 Hz
Higher frequency
Lower frequency
The optional UX-9100 is required for 1200 MHz frequency
band operation.
The optional UT-121 is required for DV mode operation.

Icom IC-9100 Specifications

General

Brand	Icom
Model	IC-9100
Category	Transceiver
Language	English