Operation Manual

Page 130 FT
DX
3000 OperaTing Manual
InstallatIon of 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.
Interconnections to FT
DX
3000
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
DX
3000
Transceiver.
Antenna Cable (5 m)
Control Cable (5 m)
GND
Antenna Terminal
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.
Note
When the
FC-40
is connected to the
FT
DX
3000
,
TX GND (pin 2) of the TUNER jack and the
LINEAR jack (pin 2) are common circuits.
Therefore, the maximum voltage at TX GND (pin
2) of the LINEAR jack must not exceed +5V.