Icom IC-7700 - Page 16

1-6
#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
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
(Po), SWR,
ALC,COMP,V
d or Id metering func-
tions during transmit. (p. 3-10)
➥ Switches the multi-function digital
meter ON or OFF when held down for
1 second. (p. 3-10)
MF3 (MULTI-FUNCTION 3 SWITCH)
➥ 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)
✔ 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)
➥ 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)
✔ 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.
ATT
OFF
P.AMP
1
METER
Po
ANT
1
1
PANEL DESCRIPTION
POWER
TUNER
TIMER
VOX
SSB CW RTTY/PSK AM/FM DATA
AUTO
TUNE
LOCK
TS
XFC
M.SCOPE EXIT/SET
REC
PLAY
VOICE MEMORYBRIGHTCONTRASTVOX GAINMONI GAINCOMPDRIVE ANTI VOX
BK-IN MONITOR
TRANSMIT
MIC
ELEC-KEY
PHONES
AF RF
MIC RF PWR
DIGI-SEL NOTCH
RIT/∂TX
CW PITCH
TWIN-PBT
KEY SPEED DELAY
F-1F-2 F-3F-4 F-5F-6 F-7
LOCKTX RX SPLIT
AGC VR
NR
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
i7700
HF/50MHz TRANSCEIVER
AGC SQL NR NB
#3 #4 #5 #6 #8#7 #9 $0 $1 $2
■ Front panel (continued)