Thread: Dish reflector
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Old April 17th 09, 08:35 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
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First recorded activity by RadioBanter: Mar 2007
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Default Dish reflector

Jim Kelley wrote:
I understand it well enough to note that it fails to make your point for
you.


You obviously don't understand why a signal that doesn't
change phase cannot be used to measure a delay based
on phase shift either through a wire or a coil.

1. Every reference says a pure standing wave does not
change phase.

2. The current on a 75m mobile antenna is at least 90%
standing wave current.

3. Therefo The phase of the current on a 75m mobile
antenna cannot be used to measure the delay through
the loading coil or even through the straight wire
parts of the antenna.

4. Yet, this is exactly the current that w7el and w8ji
used in their measurements which yielded "no detectable
phase shift" completely unrelated to delay.

Here's a question for you: What is the phase shift
in the current in 90 degrees of an ideal lossless
1/4WL stub? Until you can provide a valid direct
answer to that direct question, you will never
understand.
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com