On Apr 9, 11:59*pm, Richard Clark wrote:
On Thu, 9 Apr 2009 20:05:20 -0700 (PDT), Art Unwin

wrote:
No baluns are used

That alone is at least one thing wrong with the design.

Ignoring the obvious, the design suffers from the basic disregard for
scale and wavelength.

There are probably other issues beyond these violations of first
principles.

73's
Richard Clark, KB7QHC

The radiator is totally within the reflector envelope !
It is possible that the transmission line is picking up
some signal but a brief scan of the books show that
dishes do some how obtain some signals from the rear..
"Ignoring the obvious" is a nonsense aproach,
as is scale and wavelength.
I was hoping for somebody who is familiar with dish design
and not from one who is a talking head bent on agitation
and slander

On Fri, 10 Apr 2009 06:29:24 -0700 (PDT), Art Unwin
wrote:

"Ignoring the obvious" is a nonsense aproach,
as is scale and wavelength.

This is a curious defense of poor practice. The results fully follow
the obvious problem of ignoring scale and wavelength. Fundamentals
have been violated - it doesn't take a PhD nor a research grant to
figure that out. No models are necessary, but they would show the
failure too.

73's
Richard Clark, KB7QHC