10-2
■ Antenna connection and selection
The IC-7700 has 4 antenna connectors for the HF/50
MHz bands, [ANT1], [ANT2], [ANT3], and [ANT4].
For each operating band the IC-7700 covers, there
is a band memory which memorizes the selected
antenna. When you change the operating frequency
outside of a band, the previously used antenna is
automatically selected (see below) for the new band.
This function allows automatic switching of 4 separate
antennas for HF and 50 MHz bands operation.
• Antenna selection mode: “Auto”
After an antenna has been selected for use (by push-
ing [ANT]
(MF1)), the antenna is automatically se-
lected whenever that band is used.
[EXAMPLE]: a 3.5/7 MHz antenna is connected to
[ANT1], a 21/28 MHz antenna is connected to [ANT2],
a 50 MHz antenna is connected to [ANT3]. When the
antenna selector function is set to “Auto,” an antenna
is automatically selected when changing bands.
A receive-only antenna can be specified for [ANT4].
• Antenna selection mode: “Manual”
When “Manual” is selected, you can use the all
antenna connectors, [ANT1] [ANT2], [ANT3] and
[ANT4], however, band memory does not function. In
this case you must select an antenna manually.
• Antenna selection mode: “OFF”
In this case, only [ANT1] antenna connector can be
used. [ANT]
(MF1) switch does not function.
ANT 1
ANT 2ANT 3
ANT 4
3.5/7 MHz
bands
21/28 MHz
bands
50 MHz
band
RX
only
10
ANTENNA TUNER OPERATION
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