Specifications

Page 11FT-450 OPERATION MANUAL
I NSTALLATION
CONNECTION OF ANTENNA AND POWER SUPPLY
The FT-450 is designed for use with any antenna system providing a 50 Ohm resistive impedance at the
desired operating frequency. Every effort should be made to ensure the impedance of the antenna system is as
close as possible to the specified 50-Ohm value. Note that the “G5RV” type antenna does not provide 50-Ohm
impedance on all HF Amateur bands, and an external wide-range antenna coupler must be used with this
antenna type.
Any antenna to be used with the FT-450 must, ultimately, be fed with 50 Ohm coaxial cable. Therefore, when
using a “balanced” antenna such as a dipole, remember that a balun or other matching/balancing device must
be used to ensure proper antenna performance.
1/16''
3/4''
1 1/8''
3/4''
Adapter
1/8''
5/8''3/8''
TYPICAL PL-259 INSTALLATION
ABOUT COAXIAL CABLE
Use high-quality 50-Ohm coaxial cable for the lead-in to your FT-450 transceiver. All efforts at providing an
efficient antenna system will be wasted if poor quality, lossy coaxial cable is used. This transceiver utilizes
standard “M” (“PL-259”) type connector.
AC Power Supply
FT-450
CAUTION
Permanent damage can result if improper supply
voltage, or reverse-polarity voltage, is applied to the
FT-450. The Limited Warranty on this transceiver
does not cover damage caused by application of
AC voltage, reversed polarity DC, or DC voltage
outside the specified range of 13.8V ±10%.
When replacing fuses, be certain to use a fuse of
the proper rating. The FT-450 requires a 25A fast-
blow fuse.
INPUT
DC 13.8 V
22A
ANT
GND
EXT
SPKR
CATLINEARTUNERDATA
ANTENNA
A
0 5 20 30 40
POWER
ON
OFF
RED BLACK
FUSE: 25A
V
0 5 10 15 20