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