[TowerTalk] 40 m Dipole question.

[AA6DX - Mark]

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 at gmail.com>
To: <towertalk at 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