[TowerTalk] Quarter wave baluns

[Máximo EA1DDO_HK1H]

Hi Dean,

I am working on a similar system with quarter wave for monobands quads.
You can have a look here;

http://translate.google.com/translate?hl=es&sl=es&tl=en&u=http%3A%2F%2Fwww.ea1ddo.es%2Fbalun%2Fbalun_ea1ddo_para_antenas_cubicas.html

(sorry for the translator but original is in spanish).

I guess are not very common baluns because are just for monobands (there are more multibands now) and perhaps, hams like current style balun and coaxial chokes instead of quarter wave technologies, dificult to understand.

Thanks for your comments.

73, Maximo - EA1DDO

                                               


> Date: Sat, 17 Sep 2011 17:28:31 -0700
> From: n5ardxcc at gmail.com
> To: TowerTalk at contesting.com
> Subject: [TowerTalk] Quarter wave baluns
> 
> If you are an antenna fan you are probably aware of the work done by G0KSC
> to design yagi antennas having exceptionally low radiation off the rear and
> wide bandwidth. These are described on his web page and, I believe, are
> offered by F12. One uses a loop radiator and the other uses a split dipole.
> One version uses a rather unorthodox quarter wave balun formed by connecting
> a 1/4 wave long bar from the coax center connection on the dipole which runs
> along the boom and is connected to it at the other end. It is not connected
> to the feed line coax 1/4 wavelength from the feed point. I do not
> understand how this works.
>   This does not seem to agree with the explanation of the usual quarter wave
> balun found here.
> http://www.antenna-theory.com/definitions/foldedbalun.php
> 
> Any comments?
> 
> -- 
> Dan Hearn
> N5AR
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