I don't think the parts are worth $5.00 purchased retail.

Hank
"JGBOYLES" wrote in message
...
Today at the local
hamfest I ran across a 20 meter Isotron that the seller touting.
Anyone really know the theory
behind these things?

As far as I can tell the Isotron is a parallel tuned circuit. On 20M it
should work as well as any other antenna of the same size and height above
ground, cause it depends on feed line radiation, just like all the other
"small' antennas. On 20 it should do ok, but try one on 80 or 160M.

I would not put a 20M Isotron on the air if someone gave me one. There
are
too many other ways to get out a decent signal. I might take it apart and
use
the aluminum plates, PVC, and wire on a later project, though.

73 Gary N4AST