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Old October 23rd 03, 02:56 AM
H. Adam Stevens
 
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what?
there are multiple answers?
how many?

"Roy Lewallen" wrote in message
...
The point is that there's no "correct" answer. The voltage between two
points separated in space with the presence of a varying magnetic field
can be pretty much anything you'd like it to be -- the value depends, as
others have pointed out, on the path taken between the points. Only Reg
is able to suspend the principles of electromagnetics and confidently
compute a single answer.

Roy Lewallen, W7EL

Richard Harrison wrote:
Roy, W7EL wrote:
"Which orientation would provide the "correct" answer?"

Maybe none.

We know what the correct answer is at the feedpoint. By trial and error
we can find the most stable and least critical placement for our test
lead. We can calibrate our voltage indicator with a sample at the
feedpoint under the conditions that prevail.

A test lead perpendicular to the balanced antenna suffers the least
interference. It`s subject to imperfections and it`s subject to
improvements to overcome the imperfections.

In AM broadcasting we get away with hanging a sampling loop on each
tower of a directional array to monitor both tower current and phase. It
works well enough.

Do you have a better idea than a diode probe to sample voltage at the
end of a dipole?

Best regards, Richard Harrison, KB5WZI




 
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