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Page 122 FT-950 OPERATING 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 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 automati-
cally stored in memory for instant recall when the same frequency range is selected later.
Please see the FC-40 Operating Manual for detailed information.
INSTALLATION OF OPTIONAL ACCESSORIES
Interconnections to FT-950
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-950 Transceiver.
TO
1
ANT
DC IN
2
FROM
GND
ROT LINEAR TUNER PTT REC REM KEY
DMU CAT
EXT
SPKR
INPUT: DC 13.8 V
22 A
-TUNE
-TUNE
Install the supplied fer-
rite core as close to the
connector as possible.
Wrap the ends of the
waterproof cap with the
supplied sealing tape to
protect against mois-
ture ingress.
Antenna Terminal
GND
Antenna Cable (5 m)
Control Cable (5 m)
Note
When the FC-40 is connected to the FT-950, 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.
124


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