Icom IC-746 Instruction Manual page 5

!3 RF GAIN/SQUELCH CONTROL [RF/SQL] (p. 12)
Adjusts the RF gain and squelch threshold level.
The squelch removes noise output from the speaker
(closed condition) when no signal is received.
• The squelch is particularly effective for FM. It is also
available for other modes.
• The control can be set as the RF gain control only
(squelch is fixed open) or squelch control (RF gain is
fixed at maximum) in set mode.
!4
ı
MIC GAIN
!4 MIC GAIN CONTROL [MIC GAIN]
Adjusts the microphone input gain.
!5 RF POWER CONTROL [RF PWR] (p. 84)
Continuously varies the RF output power from mini-
mum (2 W*) to maximum (100 W*).
*AM mode: 2–40 W, other modes: 5–100 W.
!6 CW PITCH CONTROL [CW PITCH] (p. 20)
Shifts the received CW audio pitch and monitored
CW audio pitch without changing the operating fre-
quency.
• The pitch can be changed from 300 to 900 Hz in approx.
3 Hz steps.
!7 ELECTRONIC CW KEYER SPEED CONTROL
[KEY SPEED] (p. 22)
Adjusts the internal electronic CW keyer's speed.
• 6 wpm to 60 wpm can be set.
!8 PREAMP/ATTENUATOR SWITCH [P.AMP/ATT]
(p. 38)
Push momentarily to toggle between preamp-1
and preamp-2.
Push for 1 sec. to toggle the attenuator function
ON and OFF.
!9 NOISE BLANKER SWITCH [NB] (p. 39)
Toggles the noise blanker ON and OFF. The noise
blanker reduces pulse-type noise such as that gen-
erated by automobile ignition systems. This function
cannot be used for FM, or non pulse-type noise.
@0 VOX/BREAK-IN SWITCH [VOX/BK-IN]
In SSB, AM and FM modes, push momentarily to
!5 !6
RF PWR CW PITCH KEY SPEED
• Setting RF gain
Maximum
RF gain
Adjustable
range
Minimum
RF gain
sensitivity
• Setting squelch
Noise squelch
operating range
Squelch
threshold
Squelch
open
!7 !8 !9
P.AMP/ATT NB
turn the VOX function ON; push for 1 sec. to turn
the VOX function OFF. (p. 43)
In CW mode, push momentarily to select semi
break-in, full break-in or break-in OFF; push for 2
sec. to enter break-in set mode. (p. 44)
@1 MONITOR SWITCH [MONI] (p. 45)
Push to toggle the monitor function ON and OFF.
Push for 2 sec. to enter and exit monitor set
mode.
PANEL DESCRIPTION
Maximum
RF gain
sensitivity
S-meter squelch
threshold
S-meter squelch
operating
range
@0 @1
VOX/BK-IN MONITOR
1
3