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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 FTDX101 series
After mounting the FC-40, connect the cables from the FC-40 to the ANT and TUNER jacks on the rear
panel of the FTDX101 series Transceiver.
ANT 1
ANT 2
EXT SPKR
KEY
ACC
TUNER
PTT
METER
GND
LINEAR
+13.8V
REM
EXT ALC
RS-232C
A
B
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.
Ferrite Core
TUNER
Antennna
Antennna
Terminal
Antenna Cable (supplied with FC-40)
Control Cable (supplied with FC-40)
GND Terminal