What I have done thru the years ... find the aerial's lowest swr .. say it
dips @ 7.299. Then, using my high school algebra, I calculate the --- ahh,
never mind .. here's someone that has already written it all up! 73 -- Mark
AA6DX
http://www.hamuniverse.com/easydipole.html
----- Original Message -----
From: "Lizeth Norman" <normanlizeth@gmail.com>
To: <towertalk@contesting.com>
Sent: Sunday, January 29, 2012 7:19 AM
Subject: [TowerTalk] 40 m Dipole question.
> Hi all!
> I'm helping a friend set up a 40 m dipole on his tower. It hangs at
> approximately 30ft. The dipole is in a flat top configuration. There is
> some droop on the ends, but not too much. We have tried it at the 33' per
> side length as well as 30' per side. Neither gives reasonable swr. Both
> show 3:1 +. The cable is tested good (into my bird load) at 100 watts.
> Tried using a balun, and not using a balun. The tower is heavily grounded.
> Any ideas to try?
> Norm n3ykf
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