May be the following link has some interest for you and for who has not
April 1960 CQ-Magazine
http://www.cebik.com/bc.html
73,
Mauri I4JMY
> ---------- Initial message -----------
>
> From : owner-towertalk@contesting.com
> To : <towertalk@contesting.com>
> Cc :
> Date : Tue, 13 Mar 2001 22:03:33 -0500
> Subject : [TowerTalk] X-beam
>
> I gave contesters and Dxers a challenge to build a G4ZU Birdcage for
either
> 80 or 160 a couple of years ago.
> I don't know of anyone who has one, but I do know that many are
looking for
> a way to improve their signal over a four square
> or even a set of K8UR vertical dipoles. The G4ZU birdcage (see CQ
Magazine
> April 1960) is a 2 el quad folded back on itself
> G4ZU found that using just a portion of the birdcage (the bottom X)
gave
> almost the same results. He labeled this the X beam.
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