But, Pete, shortening just one leg might make the antenna pattern slightly
asymmetrical. How can you tolerate the 0.01dB error? Is life even worth
living with such hideously distorted antenna patterns. And gosh, that
asymmetry might induce some current on the feedline.
----- Original Message -----
From: "Pete Smith" <email@example.com>
Cc: "Towertalk" <firstname.lastname@example.org>
Sent: Tuesday, November 30, 2004 1:30 PM
Subject: Re: [TowerTalk] adjusting insulated wire dipole
> Something I came to relatively late in my ham life is the realization that
> you can adjust the resonance of antennas where you only have access to one
> end, just by lengthening or shortening that one end. I have a K3LR-style
> lazy-vee dipole array for 40, and have adjusted all 4 dipoles at their
> bottom ends to bring their lowest SWR frequency up into the CW band, by
> folding the insulated wire back on itself. The change in resonance seems
> to track nicely with what would be expected if I had cut off the extra
> length instead of folding it back.
> 73, Pete N4ZR
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.
TowerTalk mailing list