Installation; Connestion Of Antenna And Power Supply; About Coaxial Cable - Yaesu FT-450 Operation Manual

C
ONNECTION OF
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 imped-
ance 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.
C
AUTION
Permanent damage can result if improper supply
voltage, or reverse-polarity voltage, is applied to
the FT-450. The Limited Warranty on this trans-
ceiver does not cover damage caused by applica-
tion of AC voltage, reversed polarity DC, or DC volt-
age 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.
AC Power Supply
RED
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.
FT-450 O
A
NTENNA AND
0 5 10 15 20 0 5 20 30 40
V A
POWER
ON
OFF
BLACK
FUSE: 25A
A C
BOUT
1/16''
3/4''
1 1/8''
T PL-259 I
YPICAL
M
I
P S
OWER
ANT
INPUT
DC 13.8V
22A
EXT
GND
SPKR
DATA TUNER LINE AR CAT
C
OAXIAL ABLE
NSTALLATION
NSTALLATION
UPPLY
FT-450
Adapter
3/4''
1/8''
3/8'' 5/8''
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