Art Unwin wrote:
On Sep 11, 2:05?pm, wrote:
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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Yes Jim. Unless one accepts the weak force for what it is, what
creaates it

You mean the weak interaction which is often called the weak force or
sometimes the weak nuclear force which is due to the exchange of
W and Z bosons and which affects all left-handed leptons and quarks
and whose typical field strength is 10^11 times less than that of
the electromagnetic force?

What about it?


--
Jim Pennino

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