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
>
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
> Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
> questions and ask for Sherman, W2FLA.
>
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