Icom IC-756PROIII Instruction Manual page 8

1
PANEL DESCRIPTION
■ Front panel
TIMER
POWER
TRANSMIT
PHONES
ELEC-KEY
MIC
!3 COMPRESSION LEVEL CONTROL [COMP]
(p. 68)
Adjusts the speech compression level in SSB.
Compression
level decreases
!4 SEMI BREAK-IN DELAY CONTROL
[BK-IN DELAY]
Adjusts the transmit-to-receive switching delay time
for CW semi break-in operation.
Short delay for
high speed keying
(2 dot)
!5 ELECTRONIC CW KEYER SPEED CONTROL
[KEY SPEED] (p. 35)
Adjusts the internal electronic CW keyer's speed.
• 6 wpm (min.) to 60 wpm (max.) can be set.
Slow
!6 MULTI-FUNCTION SWITCHES
Push to select the functions indicated in the LCD
display to the right of these switches.
• Functions vary depending on the operating condition.
3
(continued)
@0 !9 !8 !7 !6
HF/50MHz TRANSCEIVER
TUNER MONITOR NB NR
AF RF/SQL BAL NR
MIC GAIN RF POWER COMP BK-IN DELAY KEY SPEED
!3 !4 !5
Compression
level increases
COMP
Long delay for
slow speed keying
(13 dot)
BK-IN DELAY
Fast
KEY SPEED
F-1 F-2 F-3 F-4
SSB CW/RTTY AM/FM FILTER
➥ Selects the antenna connector between
ANT ANT
1
ANT1 and ANT2 when pushed. (p. 88)
➥ Turns the [RX ANT]
and OFF when pushed for 1 sec.
• When the receive antenna is activated, the
antenna which is connected to the [ANT1] or
[ANT2] is used for transmission only.
When a transverter is in use, this [ANT]
does not function and 'XVERT' appears.
➥ Selects RF power
METER METER
COMP metering during transmit. (p. 31)
Po Po
➥ Switches the multi-function digital meter
ON and OFF when pushed for 1 sec.
➥ Selects one of 2 receive RF preamps or
P.AMP P.AMP
bypasses them. (p. 57)
OFF OFF
• "P. AMP1" activates 10 dB preamp.
• "P. AMP2" activates 16 dB high-gain preamp.
✔ What is the preamp?
The preamp amplifies received signals in the front end cir-
cuit to improve the S/N ratio and increase the sensitivity. Se-
lect "P. AMP1" or "P. AMP2" when receiving weak signals.
➥ Selects 6 dB, 12 dB or 18 dB attenuator,
ATT ATT
or bypasses them. (p. 57)
OFF OFF
✔ What is the attenuator?
The attenuator prevents a desired signal from distorting
when very strong signals are near the desired frequency, or
when very strong electric fields, such as from a broadcast-
ing station, are near your location.
F-5
EXIT/SET
(receive antenna)
, SWR, ALC or
(Po)
ON