Icom IC-7700

10-5
10
ANTENNA TUNER OPERATION
D Receive antenna I/O setting
In the default setting, receive antenna connectors,
[RX ANT-IN] and [RX ANT-OUT], on the rear panel
are deactivated and are connected internally by the
switchingrelay.Ifyouwanttoconnectanexternal
preamp or low-pass filter between the [RX ANT-IN]
and [RX ANT-OUT], you must activate them as de-
scribed below.
q Select the antenna set screen.
w Select the desired frequency band with a band key.
e Push [RX-I/O]
F-1
to activate the receive antenna
connectors ([RX ANT-IN] and [RX ANT-OUT]).
 •“RX-I/O”indicatorsappearwhen[RXANT-IN]and[RX-
ANT-OUT] are active.
r Repeat steps w and e, if desired.
t Push
EXIT/SET
toexitantennasetscreen.
“RX-I/O” indicators appear when [RX ANT-IN]
and [RX ANT-OUT] are active.
Band keys
F-1
RX-I/O
Preamp or
Low-pass filter,
etc.
Transceiver
Receiver
Transmitter
IN
[RX ANT]
OUT
Transmit/Receive
switching circuit
ANT