( For Wire Antenna ); Interconnections To Ft-891 - Yaesu 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
Install the ferrite core
as closeto the
connector as possible.
Coaxial Cable
TUN/LIN
Control Cable
106
Wrap the ends of the
waterproof cap with the
sealing tape to protect
against moisture ingress.
FT-891 Advance Manual