Thread: Dual-Z0 Stubs
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Old May 3rd 09, 11:10 PM posted to rec.radio.amateur.antenna
Art Unwin Art Unwin is offline
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First recorded activity by RadioBanter: Mar 2008
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Default Dual-Z0 Stubs

On May 3, 2:15*pm, "Dale Parfitt" wrote:
*Aw come on Cecil
It is a lumped load which is unbalanced and Maxwell demands
equilibrium ie balanced. Yes, it has distributed loading but formed
into a helix antenna
such that it includes lumped loading. *Maxwell in his search for
maximum efficiency he would have added a symbol to his equations for
lumped loads . He then would have to include pitch and the like but he
just did not consider it as a consideration.
This is clearly shown with a WL verticle when for maximum effeiciency
it is tipped from right angles to the Earth ala the Corriolis effect
with which you are tampering with
when current rotates, and its introduction of a slow wave and a
different velocity factor
This is why you cannot equate lumped loads with antenna degrees, only
approximate
I have no which to debate it so I will leave it at that. Soon I will
be heading home.
No offense intended but physics is physics
Art

Hi Art,
Can you reference a professional journal that confirms this Coriolis (I
believe that is the correct spelling) effect w/ respect to tipped
verticals - or is this something only you have discovered?

Dale W4OP


Coriolis effect is already well accepted in science.
A tipped radiator comes about when one uses optimizer style programs
based on the teaching or equations of Maxwell which accounts for ALL
forces involved within an arbitrary border ie equilibrium per the
teachings of Newton. Most people ignore the tipping arrangement for
simplicity and use programs strictly for planar forms which is an good
approximation in accounting for all generated radiation