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BROADBAND HF DIPOLE ANTENNA
COMPACT SIZE
WD330S
OPERATING INSTRUCTIONS
Thank yo” for purchasing the Diamond HF Dipole
Antenna.
Before
fully these
using the antenna, please
read care-
OPERATING INSTRUCTIONS to operate
transceiver.
adjust the forward
Switch the wattmeter
attempting
to read reflected
power
range. and it is very easy to assemble.
First check for broken.
for multiple antennas
na tunes between the transceivers
or an anten-
and antenna are elimi-
shorted
or twisted
Frequency
range
2-26.6MHz
suggested installations. For best performance, the antenna
Max.Power range
150 W PEP
should be installed with the radiating elements in a horizon-
Input impedance
50 cl
tal (“Fiat Top”) configuration, and as high as possible.
VSWR(typical)
2:l from 2-18 MHz,
the directions of maximum radiation and
are at right angles to the radiating elements, and
3:l above 16 MHz
10 meters
this should be considered when planning installation.
this radiation pattem is based on an ideal antensituation near the ground
structures and power lines;
mounting
mance,
also
some
experimentation with
perior-
and neatby structures may
affect the feedpoint impedance
rearrangement
in a
and adjacent to other
and orientation cari significantly improve
Proximity of ground
of the antenna, SO
of the antenna could be required to achieve
a good VSWR.
Performance Verification
The impedance
match of the antenna should be verified
prier to using the antenna with a transmitter, or if there is
doubt about performance.
Install a directional
wattmeter
ground
the antenna rel-
Refer to the drawings on the opposite side of this sheet for
and may be considerably different
wires,
Then consider reconfiguring or reorienting
Specifications
practical
before
and connectors.
Installation
na in free space,
in
Lads or faulty connections in the feedline
ative to the ground or nearby structures.
However,
measures
should be corrected
nated by the unique broadband design.
reception
20 watts.
antenna is designed to
Troubleshooting
Theoretically,
and
to “se the antenna.
provide optimum performance over a wide frequency
The usual requirements
with a steady carries
output power for approximately
excess of 5 watts, the problem
properly. SAVE THESE INSTRUCTIONS.
The WD330S broadband dipole
Key the transmitters
between the antenna and the
DAMCHI DENPA KOGYO CO., LTD. 445-l Konakai Nakadori Kawagoe.
Saitama
3504022
Japan
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