On Dec 3, 9:31*pm, tom wrote:
Art Unwin wrote:
I have gathered that you have had some experience in installing
consumer dishes *and I recall you stating that dishes can only be used
in the giga hertz range, without mention that it is the size of the
antenna determines whether a dish orreflecter is pertinant or not.
Very strange!

Dishes are usable based upon their size relative to the frequency of
use. *You seem not to understand that.

They work by reflecting the EM waves directed at them. *The gain is set
by the area of the dish in square wavelengths, and your pretend physics
can't change that.

A DSS dish isn't even a pinpoint to reflect off of at 160m, which is
your favorite example.

A dish that provides only 3dB gain at 160m would be approximately a
kilometer in diameter. *How big is your mom's garden?

tom
K0TAR

Again how foolish you are. There are many radiators that have
reflectors that are way below the GIGA Hz level. You are basing your
statement on laws applicable to planar forms of radiators.
Heck! There are many helix antennas in use that have reflectors that
are used in the Mega Hz range. There is absolutely no good reason why
a antenna for top band must have a reflector a kilometer in diameter
if the antenna itself replicates a point source.
I think you have shown everybody the extent of your limitations with
respect to antennas!