Icom IC-756PROIII [8/124] Front panel

Icom IC-756PROIII [8/124] Front panel
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PANEL DESCRIPTION
Front panel (continued)
!3 COMPRESSION LEVEL CONTROL [COMP]
(p. 68)
Adjusts the speech compression level in SSB.
!4 SEMI BREAK-IN DELAY CONTROL
[BK-IN DELAY]
Adjusts the transmit-to-receive switching delay time
for CW semi break-in operation.
!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.
!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.
Selects the antenna connector between
ANT1 and ANT2 when pushed. (p. 88)
Turns the [RX ANT] (receive antenna) ON
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
(Po), SWR, ALC or
COMP metering during transmit. (p. 31)
Switches the multi-function digital meter
ON and OFF when pushed for 1 sec.
Selects one of 2 receive RF preamps or
bypasses them. (p. 57)
•“P. AMP1” activates 10 dB preamp.
•“P. AMP2” activates 16 dB high-gain preamp.
What is the preamp?
The preamp amplies 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,
or bypasses them. (p. 57)
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 elds, such as from a broadcast-
ing station, are near your location.
ATT
ATT
OFF
OFF
P.AMP
P.AMP
OFF
OFF
METER
METER
Po
Po
ANT
ANT
1
Slow
Fast
KEY SPEED
BK-IN DELAY
Short delay for
high speed keying
(2 dot)
Long delay for
slow speed keying
(13 dot)
COMP
Compression
level decreases
Compression
level increases
TIMER
POWER
TRANSMIT
PHONES
ELEC-KEY
MIC
TUNER MONITOR NB NR
AF BAL NRRF/SQL
MIC GAIN RF POWER COMP BK-IN DELAY KEY SPEED
F-1 F-2 F-3 F-4 F-5
HF/50MHz TRANSCEIVER
SSB
CW/RTTY
AM/FM FILTER EXIT/SET
!5!4!3
!6!7!8@0 !9

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Hi
2 года назад