[TowerTalk] Yagi Balun
jim at audiosystemsgroup.com
Sat Jul 19 11:36:46 EDT 2008
On Fri, 18 Jul 2008 18:24:38 -0400, Bee Walton wrote:
>If the baluns are replaced with a ferrite-bead
>type 1:1 balun such as the Force-12 brand, will the antenna pattern or
>other factors be changed?
It is important that you determine whether the existing baluns are part
of a matching network or if they are simply common mode chokes. If they
ARE part of a matching network, you should replace them with a new
version of what you took down. If they are NOT part of a matching
network, but simply a common mode choke, you should replace them with a
choke from my Choke Cookbook in
The text about baluns in the above link should also help you understand
and recognize what they're doing in those antennas.
And if they ARE part of a matching network and you replace them with a
new copy of what's there, you should ALSO add one of my chokes, because
it will reduce the receive noise as compared to a lesser balun.
Jim Brown K9YC
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