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Old October 19th 03, 05:12 AM
Cecil Moore
 
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Tdonaly wrote:
Universally recognized principles of electromagnetics are obfuscation?


Complicating a simple measurement task beyond belief is obfuscation.

You changed the geometry. But even if you hadn't, you might be
able to say the changing electrical fields are greater at the ends of
a dipole, but not the voltages, because the voltages
aren't uniquely defined.


When a dipole is bent into an open loop, the relative voltage between
the ends is uniquely defined just like the voltage across a transmission
line is uniquely defined. If I poke two wires through two holes in a
faraday cage and ask you to measure the 10 MHz voltage between them
with 10% accuracy, would you say it can't be done?

You'll give some people the impression that things are
as simple as you say they are when things are not simple
at all.


The measurement may be extremely challenging, but the *concepts* are simple.
All you need to do is note the similarity of the transmission line impedances
on an SWR circle to a wire antenna. If the spacing on a transmission line is
an appreciable percentage of a wavelength, the transmission line will radiate.
That's all a center-fed wire antenna is - a transmission line with large
spacing between the conductors and it radiates.
--
73, Cecil http://www.qsl.net/w5dxp



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