[TowerTalk] Antenna Stacking Question

[Tim Duffy K3LR]

I wrote a detailed 2 part stacking article that was published in CQ Contest magazine five years ago. I don't have a copy, but Comtek Systems does and it details the baluns that I use. The
Amidon part number and coax choice for both 75 and 50 ohms is listed in the article. They were designed by W0IYH and I built and tested them using my HP Network Analzyer. I have tested
every available commercial balun and the IYH choke baluns work much better than any of them. I use them for lots of applications throughout my antenna farm.

The article also has lots of hints for stacking 2 and 3 high stacks as well as a full design for the RF switch box I use for all of my stacks (which Comtek now sells).

You can obtain information on the baluns and stacking information from Comtek at 704-542-4808.

I have no financial interest in any product Comtek sells.

73,
Tim K3LR
http://www.k3lr.com

Bill Tippett wrote:

> <http://lists.contesting.com/mailman/listinfo/towertalk>k2qmf at juno.com
> wrote:
>  >
>  > My question is what is the best way to feed the antennas???
>  > Can I use 1to1 antenna balun on each antenna or do I need to
>  > connect the coax directly to the antenna and maybe use some
>  > ferrite beads instead??
>
>          If you use a balun of any kind, make sure it is connected
> the same way to both antennas.  Many sealed baluns have phasing
> marks and these should be aligned, otherwise your antennas will
> be out of phase and will not work well.  If your baluns are not
> marked, check this post to determine phasing:
>
> http://dayton.akorn.net/pipermail/towertalk/2000-October/034295.html
>
>                                                  73,  Bill W4ZV
>
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