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RE: [TowerTalk] elevated short vertical dipole orquarterwave monopole?

To: 'Tom Rauch' <w8ji@contesting.com>,Michael Tope <W4EF@dellroy.com>, Jim Lux <jimlux@earthlink.net>,"Guy Olinger, K2AV" <olinger@bellsouth.net>,TowerTalk <towertalk@contesting.com>
Subject: RE: [TowerTalk] elevated short vertical dipole orquarterwave monopole?
From: Steve Katz <stevek@jmr.com>
Date: Fri, 3 Dec 2004 10:36:26 -0800
List-post: <mailto:towertalk@contesting.com>

> When I had a gamma matched Wilson 20M yagi, the common mode
> voltage on the coax was so high the coax actually arced
> between the tower leg and the coax shield. 
> 
> ::Tom, you posted something recently somewhere about LPDA mfrs
> recommending running the feedline along one of the excited booms and
> stuff.  Yep, Tennadyne recommends this.  I've also seen it recommended to
> run the coax inside one of the excited booms, where an LPDA's elements
> didn't go through the booms, leaving them hollow.  In lieu of this, which
> seems wrong to me too, how do you recommend routing xmsn line to an LPDA?
> "Hanging down from the feedpoint for 1/2WL" isn't going to cut it for most
> of us, that would be a 33' rotor loop...73 de Steve WB2WIK/6
> 
> 
> _______________________________________________
> 
> See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with
> any questions and ask for Sherman, W2FLA.
> 
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_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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