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So Much For THAT Rant....
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June 6th 04, 12:05 PM
Brian Kelly
Posts: n/a
PAMNO (N2EY) wrote in message ...
In article ,
(Brian Kelly) writes:
It's another "crossed fields antenna" type heap of nonsense which
defies both Physics 101 and common sense.
Maybe - or maybe not.
Fact is that without more info we're not in a position to judge the
thing one way or another. Maybe it's a breakthrough, maybe it's one of
things that is great in theory but totally impractical, or maybe it's
a dud. Without more info, any judgement is just raw speculation. And
since a patent application is involved we're not going to see much
real data for a while anyway.
One point to watch for, though: What matters in practical antennas is
the performance of the entire antenna system, not just the antenna
itself. For example, a short (in terms of wavelength) whip antenna can
be quite efficient - it's the matching network and ground system
losses that reduce antenna system efficiency, and bandwidth, to low
numbers.
Physics is physics is physics and we all know the implications of
short antennas *and* we've read the similar hype which surrounded the
farcical CFA and EH antennas to name just a couple of this thing's
predecessors. I'll stick with my "snap judgement", the thing is guilty
until proven innocent.
Maybe. Or maybe it's for-real.
Without detailed info it's all academic anyway.
But I remember a time when it was said that "physics" would not permit
microprocessors faster than about 25 MHz. Nor with more than a few thousand
transistors. Etc.
Had nothing to do with "physics", had to do with musings posted by a
few gloms who were clueless about how rapidly developed chip
manufacturing technologies could leap past the limits of their own
imaginations. Hoof. Mouf. Classic.
There was also a very learned "professional in radio" who, when informed of the
intent of the 1921 ARRL Transatlantic Tests, proclaimed that it was physically
impossible for a kilowatt input 200 meter transmitter to be heard at that
distance. Waves were just too short, doncha know. Physics wouldn't allow it.
This is not 1921. 83 years later the physics of antennas has been
milked to the extent that the probability of anybody inventing an
antenna which does not utilize long-applied physics lies somewhere
'way out the asymptote of the curve.
Per previous I'll stick.
73 de Jim, N2EY
w3rv
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