On Sep 12, 3:17*pm, "Dave" wrote:
"Frank" wrote in message

news:iWzyk.2033$1x6.488@edtnps82...

This has lead us to the *obsurd present point where a cubic foot size
antenna for top band should have
its reflecter a couple of blocks away and of a size stretching for
several thousand feet instead of a few inches
where if the antenna was a ball of presureized water the close
reflector would prevent the jet of water spreading to the rear.

Given a 3 ft copper dipole on 1.9 MHz the free space gain is -4.6 dbi,
and exhibits a classic dipole radiation pattern. *Placing a 6 ft diameter,
radial reflector 3 ft from the antenna has no effect on the radiation
pattern,
other than a slight reduction in gain to -5.2 dbi.

Frank

you really don't think art is going to believe that do you?? *it is after
all based on a piece of software using maxwell's equations... which he has
said he believes in and that the software works, because it obviously shows
that his antenna produces a spotlight beam when you tilt it the right
angle... but he won't believe yours.

Ofcourse I do! it is very logical
You certainly must have a reflector that extends beyond the emmiter
dimensions
A dipole extends about 500 feet where as mine extends one
foot.!........Big difference. Like comparing a miniature light bulb
with a string of flourescent lights in an office building.
Has it quit raining yet? you seem to be all wet I think you need to
speak to the Navy and provide some of your expertise.
One Navy port has tilted all of their antennas for better performance
per the permission of an Admiral no less.
Do you know more about antennas than they do? This analysis is easily
proved per Maxwell equations so you should be able to
dispute what the Navy did. Why are they tilted? Because they are
including the "weak" force present in Maxwells calculations.
Is Maxwell all wet too? Computer programs based on Maxwells laws prove
it is correct so try Eznec for your self.
Tilt a long wire from vertical until it is fully resistive and the
field will show gain. You just do not have any clothes.