Art Unwin wrote:
On Sep 10, 10:05?pm, wrote:
Art Unwin wrote:
On Sep 10, 8:45?pm, wrote:
Art Unwin wrote:
What is the main factor that prevents HF radiation from focussing
for extra gain?

Money.

If you can afford to build a 20m parabola about 2,000 feet in diameter
and the place to mount it, you'll get lots of gain.

--
Jim Pennino

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Then are you saying it is the antenna size that is the main factor?.

Of course.

Everyone knows the gain of a parabola is directly proportional to
the size in wavelengths, or:

Not so!,

Well, yes, I guess that's true as only those with an education in
electromagnetics would know that.

So I doubt many participants in rec.folk-dancing would know that, but
this isn't rec.folk-dancing, though some posters here do seem to dance
around a lot.


--
Jim Pennino

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