[CQ-Contest] CQ-Contest Digest, Vol 53, Issue 13
tom at k5rc.cc
Fri May 11 17:59:35 EDT 2007
If it is a 1:1 balun, use the coax choke in the new antenna handbook.
It isn't new, but Dean Straw has determined that wrapping the turns
of coax on a form and keeping the turns parallel is much more
effective than the old rats-nest choke. I've been wrapping them
around a large plastic jar, securing the turns with ty-wraps and then
removing the jar and wrapping the whole choke with electrical tape to
keep its form.
>Date: Thu, 10 May 2007 14:05:44 -0500
>From: Jim George <n3bb at mindspring.com>
>Subject: [CQ-Contest] Telrex Balun
>To: cq-contest at contesting.com, ctdxcc at kkn.net
>Message-ID: <220.127.116.11.2.20070510135541.00be0760 at mail.mindspring.com>
>Content-Type: text/plain; charset="us-ascii"; format=flowed
>My Teltrex 40-M-346 three element yagi for 40 meters has been damaged in a
>recent wind storm here. The antenna twisted on the mast and the feedline
>was stretched so much that it pulled the end out of an old and flimsy metal
>balun enclosure, identical to the one that came with the antenna way back
>when. It's a 1:1 coaxial balun. The balun internal wiring still is intact,
>and it works, but the stretched end now is open to the elements. Does
>anyone know where I can find a used balun or (preferably) locate someone
>who can build one in a new and stronger enclosure. The second question is
>whether someone has experience replacing the original Telex balun? If so,
>what? And in what type of enclosure and how was it mounted on the boom at
>the feedpoint? Please contact me directly.
>I can (barely) reach the balun, so hope to replace this damaged unit
>without having to reposition the antenna. It's really heavy.
>Thanks in advance for any advice.
>Jim George N3BB
Tom Taormina, K5RC
Virginia City Nevada USA
Home of NACHO - W7RN and RANN - K7RC
Web Site: http://k5rc.cc/ FOC 1760
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