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[TowerTalk] Fw: TSRC member patents antenna

To: <>
Subject: [TowerTalk] Fw: TSRC member patents antenna
From: Dick Green" < (Dick Green)
Date: Sat, 25 Apr 1998 03:44:44 -0400
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: <>
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
>made at the U.S. Army Cold Regions Research and Engineering Laboratory
>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
>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
>antenna is acomplished by colapsing or stretching the braid over the
>cord.   The adjusted length of the copper braid is then maintained by
>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.
>A multi-band, variable, high-frequency antenna comprises a pair of
>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
>copper conductor elements is mounted on a non-conductive support cord, the
>braided copper conductor elements being expandable and retractable along
>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
>the distal end of the conductor element at a selected position on the
>cord on which the conductor element is mounted. Release of the cord locks
>permits lengthening and shortening of the braided copper conductor
>and locking of the cord locks is operative to lock the conductor elements
>place on the support cords to selectively fix a length of each of the
>Details on this patent can be found on the web at:
>Copies of the patent should be obtainable through your local library.

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