On Mar 12, 11:57*am, Tim Shoppa wrote:

I'm sorry, no answer to your question, I just think it's funny,
remembering the Heath Cantenna, that someone expects a Cantenna to
actually radiate a signal.

I have a Heath Cantenna too, but the WiFi folks mean a different thing
with
that term -- a 2.4 GHz waveguide antenna made from a Pringles (tm)
can.
Unfortunately, that cantenna of the second kind has almost no gain.
It needs
a much larger aperture to make that gain than the 3-inch diameter of a
foil-
covered paper tube. That can be had by attaching a larger, metallic
funnel
to the mouth of the antenna to form the typical microwave horn
antenna.
See any reputable antenna text book for design details.

Jim, K7JEB, Glendale, AZ