Icom ic-7700 Instruction Manual page 16

1
PANEL DESCRIPTION
■ Front panel (continued)
#3 #4 #5
MONITOR
DELAY
NR NB
NR NB
AF RF F-1
SSB
DRIVE COMP
#3 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.
MF1 (MULTI-FUNCTION 1 SWITCH)
➥ Selects the antenna connector from
ANT
1
ANT1, ANT2, ANT3 and ANT4 when
pushed. (p. 10-2)
➥ Displays the antenna selection mem-
ory when held down for 1 second.
• When the receive antenna is activated,
the antenna connected to [ANT4] is
used for receive only.
When a transverter is in use, this [ANT]
does not function and 'TRV' appears.
MF2 (MULTI-FUNCTION 2 SWITCH)
➥ Selects the RF power
METER
ALC, COMP, V
Po
tions during transmit. (p. 3-10)
➥ Switches the multi-function digital
meter ON or OFF when held down for
1 second. (p. 3-10)
#6 #7 #8
TX RX SPLIT
F-2 F-3 F-4
CW RTTY/PSK AM/FM
MONI GAIN VOX GAIN ANTI VOX CONTRAST
(Po)
or I metering func-
d d
#9 $0 $1
LOCK
F-5 F-6 F-7
AUTO
DATA M.SCOPE EXIT/SET
TUNE
REC PLAY
BRIGHT VOICE MEMORY
MF3 (MULTI-FUNCTION 3 SWITCH)
P.AMP
1
✔ 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.
MF4 (MULTI-FUNCTION 4 SWITCH)
ATT
OFF
, SWR,
✔ 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.
1-6
$2
1.8 3.5 7
1 2 3
10 14 18
4 5 6
21 24 28
7 8 9
GENE 50 F-INP
0 ENT
MP-W MP-R
MW V/M
A/B A=B
TS
XFC
LOCK
➥ Selects one of 2 receive RF preamps
or bypasses them. (p. 5-10)
• "P. AMP1" activates 10 dB preamp.
• "P. AMP2" activates 16 dB high-gain
preamp.
➥ Turns the preamp function OFF when
held down for 1 second. (p. 5-10)
➥ Selects a 6 dB, 12 dB or 18 dB at-
tenuator when pushed. (p. 5-10)
➥ Turns the attenuator function OFF
when held down for 1 second. (p. 5-10)
TWIN-PBT
FILTER
PBT-CLR
DIGI-SEL NOTCH
DIGI-SEL
APF/TPF
NOTCH
RIT/∂TX
RIT
∂TX
CLEAR
CW PITCH
SPEECH
SPLIT