Cat#
280-3KWindomThis Windom is our Commercial and Military grade antenna that is in
use by our armed-forces in Qutar and other countries worldwide.
The BUXCOMM 280-3KWindom is manufactured and assembled in
Evington, Virginia USA.
Because most wire type antennas are installed at a height between 35
and 55 feet, we elect to use a 4:1 BALUN poweRated @ 3000 watts
(4000 watts SSB).
The 280-3K Windom BALUN is made with special selected ferrite cores
that enable its use above 148 MHz (2 meters). The RMS power rating
is well above the Amateur Radio Legal Limit.
Our feed-point BALUN serves as both a "center insulator" with large
eye-bolts for suspension, and separate large brass terminals for the
antenna connections. By using separate antenna connections, the strain
is on the eye-bolts, and not the antenna terminals. The input to the
BALUN is a standard SO239 which accepts a PL259 male coax connector.
The feed-point is fourteen (14%) percent (MOL) from the center of the
antenna. This feed point provides a better impedance match, 80 through
2 meters.
The BUXCOMM 280-3KWindom is approximately 133.7 feet, long. This
provides ideal performance at both HF and VHF frequencies without
the use of an antenna tuner. Although a slight increase in VSWR may occur
at 15 meters, an antenna tuner may be used for maximum performance.
We have found that 85% of competive Windom antenna BALUNS are not
symetrical; That is, most manufacturers supply a BALUN with a frequency
response that rolls off rapidly between 25 and 35 MHz.
The method we use to overcome this obstacle was to select a "proprietary"
mixture of ferrite, winding ratios, and swept teflontm covered wire that to
give our BALUN the band-pass we needed to reach well into the VHF region
with our harmonic related Windom. In our lab measurements, our "special"
BALUN's display a VSWR better than 1.5:1 at 150 mHz.
In addition, by using this special built, broad-band BALUN with our Windom, we have an HF and VHF Windom antenna that now covers eighty (80) through
two (2) meters, still without an antenna tuner.
When we first developed our broadband BALUN, we found that it would
allow use of our Windom antennas well into the VHF region. Later, some of
our competitors decided to make the same claim, they, not realizing, that their
BALUN must have a band-pass that let their OCF's operate into the VHF region.
Many operator's who were duped by their hype later found their antennas would
NOT perform above 28 to 29 Mhz. As a matter of fact, they soon learned that
the antenna they had bought was incapable of operation above 28 mHz due to
the rapid roll off of their BALUN bandpass.
Another BUXCOMM Product:
* teflontm is a registered tradmark of and by E.I DuPont.
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