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FT-891 Advance Manual
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 feed point. 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.
Interconnections to FT-891
After mounting the FC-40, connect the cables from the FC-40 to the ANT and TUN/LIN
jacks on the rear panel of the FT-891 Transceiver.
ANT
TUN/LIN
Install the ferrite core
as closeto the
connector as possible.
Wrap the ends of the
waterproof cap with the
sealing tape to protect
against moisture ingress.
Control Cable
Coaxial Cable
