ICOM IC-7700 Manual Do Utilizador
1-6
#3
MULTI-FUNCTION SWITCHES
Push to select the functions indicated in the LCD
display to the right of these switches.
Push to select the functions indicated in the LCD
display to the right of these switches.
• Functions vary depending on the operating condition.
MF1 (MULTI-FUNCTION 1 SWITCH)
➥
Selects the antenna connector from
ANT1, ANT2, ANT3 and ANT4 when
pushed. (p. 10-2)
ANT1, ANT2, ANT3 and ANT4 when
pushed. (p. 10-2)
➥
Displays antenna selection memory
when pushed and held for 1 sec.
when pushed and held for 1 sec.
• When the receive antenna is activated,
the antenna connected to [ANT4] is used
for receive only.
for receive only.
When a transverter is in use, this [ANT]
does not function and ‘TRV’ appears.
does not function and ‘TRV’ appears.
MF2 (MULTI-FUNCTION 2 SWITCH)
➥
Selects RF power
(Po)
, SWR, ALC,
COMP, V
D
or I
D
metering during trans-
mit. (p. 3-10)
➥
Switches the multi-function digital
meter ON and OFF when pushed and
held for 1 sec. (p. 3-10)
meter ON and OFF when pushed and
held for 1 sec. (p. 3-10)
MF3 (MULTI-FUNCTION 3 SWITCH)
➥
Selects one of 2 receive RF preamps
or bypasses them. (p. 5-9)
or bypasses them. (p. 5-9)
• “P. AMP1” activates 10 dB preamp.
• “P. AMP2” activates 16 dB high-gain pre-
• “P. AMP2” activates 16 dB high-gain pre-
amp.
✔
What is the preamp?
The preamp amplifies signals in the receiver front end to
improve S/N ratio and sensitivity. Select “P. AMP1” or “P.
AMP2” when receiving weak signals..
improve S/N ratio and sensitivity. Select “P. AMP1” or “P.
AMP2” when receiving weak signals..
MF4 (MULTI-FUNCTION 4 SWITCH)
➥
Selects 6 dB, 12 dB or 18 dB attenua-
tor when pushed. (p. 5-9)
tor when pushed. (p. 5-9)
➥
Turns the attenuator function OFF
when pushed and held for 1 sec.
(p. 5-9)
when pushed and held for 1 sec.
(p. 5-9)
✔
What is the attenuator?
The attenuator prevents a desired signal from being dis-
torted when very strong signals are near the desired fre-
quency, or when very strong electromagnetic fields, such
as from a broadcasting station, are near your location.
torted when very strong signals are near the desired fre-
quency, or when very strong electromagnetic fields, such
as from a broadcasting station, are near your location.
ATT
OFF
OFF
P.AMP
1
METER
Po
ANT
1
1
PANEL DESCRIPTION
SSB
CW
RTTY/PSK
AM/FM
DATA
AUTO
TUNE
LOCK
TS
XFC
M.SCOPE
EXIT/SET
REC
PLAY
VOICE MEMORY
BRIGHT
CONTRAST
VOX GAIN
MONI GAIN
COMP
DRIVE
ANTI VOX
MONITOR
RF
DIGI-SEL
NOTCH
RIT/
∂
TX
CW PITCH
TWIN-PBT
D
DELAY
F-1
F-2
F-3
F-4
F-5
F-6
F-7
LOCK
TX
RX
SPLIT
FILTER
PBT-CLR
DIGI-SEL
APF/TPF
NOTCH
RIT
CLEAR
SPEECH
1
1.8
2
3.5
3
7
4
10
5
14
6
18
7
21
8
24
MP-W
MP-R
MW
V/M
A/B
A=B
9
28
GENE
0
50
ENT
F-INP
∂
TX
NB
SPLIT
7700
NSCEIVER
NB
#3
#4 #5
#6
#8
#7
#9 $0 $1
$2
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Front panel (continued)