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[TowerTalk] Off Center Fed Antennas

To: <towertalk@contesting.com>
Subject: [TowerTalk] Off Center Fed Antennas
From: "Tony Rogozinski" <trogo@telegraphy.com>
Date: Tue, 4 Jun 2013 05:40:51 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
I’ve been using a Carolina Windom here at my Virginia QTH as well as my new QTH 
in Colombia and the results have frankly been pretty
spectacular.  It works good on all bands, thru a tuner – surprisingly well.  
Been on the air since 1957 so I’m not a newbie and have used
many antennas over the past 56 years.  From a very marginal QTH here in the 
Blue Ridge I worked 122 countries using 100 Watts during
CQWW CW 2011 – single band 15 meters!
Obvioulsy I want to put up yagis for the higher bands asap but that wire has 
done yoemans work for me.

Tony 
W4OI/HK1AR

From: Jim Brown <jim@audiosystemsgroup.com>
To: towertalk@contesting.com 
Sent: Monday, June 3, 2013 11:22 AM
Subject: Re: [TowerTalk] One more dipole-balun question


On 6/3/2013 6:32 AM, John Geiger (AF5CC) wrote:
> Given this new revelation, that it is a off center fed dipole, what is now 
> the best balun for the twin lead to coax junction?

Off-center fed antennas are a really bad idea, primarily because they 
make the feedline a part of the antenna. This puts RF in the shack, 
increases the likelihood of RFI to your neighbors, and picks up noise to 
interfere with the stations you're trying to work.? A common mode choke 
could solve this problem, BUT:? the off-center feed places a very high 
common mode voltage across the choke, making it likely to fry.

73, Jim K9YC



Tony W4OI/HK4AR

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