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Optional Accessories
FC-40 External Automatic Antenna Tuner (for Wire Antenna)
The FC-40 makes use of the control circuitry built into the transceiver, which allows the operator to control
and monitor automatic operation of the FC-40, which mounts near the antenna feedpoint. The FC-40 uses
specially selected, thermally stable components, and is housed in a waterproof case to withstand severe
environmental conditions with high reliability.
A carefully-chosen combination of solid-state switching components and high-speed relays allows the FC-
40 to match a wide variety of antennas to within a 2:1 SWR on any amateur band frequency (160 through
6 meters), typically in less than eight seconds. Transmitter power required for matching may be as little as
4 - 60 Watts, and matching settings are automatically stored in memory for instant recall when the same
frequency range is selected later.
Please see the FC-40 Operating Manual for detailed information.
Depending on the installation and location of some antennas, it may not be possible to tune to a low SWR.
• Interconnections to FT-710
After mounting the FC-40, connect the cables from the FC-40 to the ANT and TUNER jacks on the rear
panel of the FT-710 Transceiver.
Turn OFF the external power supply switch and the FT-710 power supply switch rst before connecting the ca-
bles.
Install the supplied ferrite core as
close to the connector as possible.
Wrap the ends of the waterproof
cap with the supplied sealing
tape to protect against moisture
ingress.
TUNER
Antennna
Terminal
Antenna Cable (supplied with FC-40)
Control Cable (supplied with FC-40)
GND Terminal
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