Art Unwin wrote:

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!

A typical helical antenna would be in the "mega" hertz range would be
for 435 MHz. The planar reflector for that antenna is 70cm, or 1
wavelength. Which would lead one to conclude that a planar reflector
for top band would be about 160m.

And now Art will make up more new physics for his response.

tom
K0TAR