Diamond Antenna WD330S Operating Instructions

BROADBAND HF DIPOLE
COMPACT SIZE
WD330S
OPERATING INSTRUCTIONS
Thank you for purchasing
Antenna. Before using the antenna, please read care-
fully these OPERATING INSTRUCTIONS to operate
properly. SAVE THESE INSTRUCTIONS.
The WD330S broadband
provide optimum performance
range, and it is very easy to assemble.
The usual requirements for multiple antennas or an anten-
na tunes between the transceivers
nated by the unique broadband design.
Installation
Refer to the drawings on the opposite side of this sheet for
suggested installations. For best performance, the antenna
should be installed with the radiating elements in a horizon-
tal ("Flat Top") configuration,
Theoretically, the directions
reception are at right angles to the radiating elements, and
this should be considered
However, this radiation pattern is based on an ideal anten-
na in free space, and may be considerably
practical situation near the ground and adjacent to other
structures and power lines; some experimentation
mounting and orientation can significantly improve perfor-
mance, Proximity of ground
also affect the feedpoint
rearrangement of the antenna could be required to achieve
a good VSWR.
Performance Verification
The impedance match of the antenna should be verified
prior to using the antenna with a transmitter, or if there is
doubt about performance.
Install a directional wattmeter
DAI-ICHI DENPA KOGYO CO., LTD.
ANTENNA
the Diamond HF Dipole
dipole antenna is designed
over a wide frequency
and antenna are elimi-
and as high as possible.
of maximum radiation
when planning installation.
different in a
and nearby structures
impedance of the antenna,
between the antenna and the
445-1 Konakai Nakadori Kawagoe, Saitama 350-0022 Japan
transceiver. Key the transmitters with a steady carries and
adjust the forward output power for approximately 20 watts.
Switch the wattmeter to read reflected power measures in
excess of 5 watts, the problem should be corrected before
attempting to use the antenna.
to
Troubleshooting
First check for broken, shorted or twisted wires, ground
leads or faulty connections in the feedline and connectors.
Then consider reconfiguring or reorienting the antenna rel-
ative to the ground or nearby structures.
Specifications
Frequency range
Max.Power range
Input impedance
VSWR(typical)
and
Length
with
may
so
DIAMOND
ANTENNA
: 2—28.6MHz
: 150 W PEP
: 50 Q
: from 2-18 MHz,
3:1 above 18 MHz
: 10 meters