Towertalkians: Looks like there's something new under the sun. I am proud to
report that Bert is a member of the Twin State Radio Club (TSRC) of the
Upper Connecticut River Valley of NH/VT (our local club.)
73, Dick, WC1M
-----Original Message-----
From: Mill Moore <Mill.Moore@VALLEY.NET>
To: <towertalk@contesting.com>
Date: Friday, April 24, 1998 2:43 PM
Subject: TSRC member patents antenna
>
>Bert Yankielun, WA1O, has recently been awarded a patent for an invention
he
>made at the U.S. Army Cold Regions Research and Engineering Laboratory
(CRREL).
>He developed and patented a modification to a dipole antenna that permits
>manual tuning over a wide band of frequencies.
>
>By shortening or lenghtening braided copper radiating elements that are
>coaxially mounted over an insulated support cord, the antenna can be
adjusted
>to resonate at any desired frequency within a wide band. The antenna is
>anticipated to be of interest to amateur radio operators and for military,
>emergency and commercial field operations. Manual frequency adjustment of
the
>antenna is acomplished by colapsing or stretching the braid over the
support
>cord. The adjusted length of the copper braid is then maintained by
simple
>cord locks.
>
>CRREL is currently looking for candidate companies to license this patent.
>
>The following is an excerpt from the U.S. Patent Office records.
>
>Multi-band, variable, high-frequency antenna
>United States Patent # 5,706,018
>Jan. 6, 1998
>Inventor: Yankielun; Norbert E.
>
>Abstract
>A multi-band, variable, high-frequency antenna comprises a pair of
transmission
>lines for conveyance of signals from and to a transceiver, and a pair of
>braided copper conductor elements, each in electrical communication at a
>proximal end thereof with one of the transmission lines. Each of the
braided
>copper conductor elements is mounted on a non-conductive support cord, the
>braided copper conductor elements being expandable and retractable along
the
>support cords on which the conductor elements are mounted. A cord lock is
>proximate a distal end of each of the conductor elements for releasably
locking
>the distal end of the conductor element at a selected position on the
support
>cord on which the conductor element is mounted. Release of the cord locks
>permits lengthening and shortening of the braided copper conductor
elements,
>and locking of the cord locks is operative to lock the conductor elements
in
>place on the support cords to selectively fix a length of each of the
conductor
>elements.
>
>
>Details on this patent can be found on the web at:
>
>http://patents.uspto.gov/cgi-bin/ifetch4?INDEX+PATBIB-97-98+0+29583+0+1+228
9+F+1
>+2+1+in%2fyankielun
>
>Copies of the patent should be obtainable through your local library.
>
>
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