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Old January 5th 09, 02:03 PM posted to rec.radio.amateur.antenna
Art Unwin Art Unwin is offline
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First recorded activity by RadioBanter: Mar 2008
Posts: 1,339
Default The $1000 Power Measurement Challenge

On Jan 5, 6:24*am, Cecil Moore wrote:
Art Unwin wrote:
'I see no discontinuety at the ends of the antenna so the *law on
discontinuity does not apply..
I do see a discontinuity in a transmission line so the laws on
discontinuity do apply..


A #14 horizontal wire 30 feet above ground is a "single-
wire above-ground transmission line" line with a
Z0 = 138*log(4D/d) = 600 ohms where 'd' is the diameter
of the wire and 'D' is the height above ground. The ground
is the other half of the transmission line.
--
73, Cecil *http://www.w5dxp.com


Common aurgument revolve about accounterbility for surrounding
fields. Your " transmission line" is hardly a conventional one to use
in such auguements
But then again my abilities in this area are not sufficient for
auguement or debate which is why I ask questions
Best regards
Art