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Old July 3rd 08, 08:37 PM posted to rec.radio.amateur.antenna
Dave Dave is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 797
Default Radiation and dummy loads


"Art Unwin" wrote in message
...
On Jul 3, 12:25 pm, wrote:
On Jul 3, 11:08 am, Art Unwin wrote:

I am trying to understand why a low swr repetitive over a band of
frequencies is considered by hams to be a dummy load.!


Has nothing to do with it. SWR and antenna efficiency are
not related. Also SWR and common mode currents, or
the lack of are not related.

This
consistently shows up in statements by the itelligensia of this
newsgroup.


Not by me. But I can't hardly spell itelligensia without help,
much less be one..
A man has to know his limitations.

Following up on the logic of that idea it would suggest
that if swr was totally constant ( not sure how that could be) then
all radiation must be zero or self cancelling.?


That is Art logic...

This thus suggests that if a log periodic antenna was unlimitted in
the number of elements used would in the limit drop down to zero
radiation!. So following the thinking of this group the oscillations
that I show on my page


unwinantennas.com/


as a progression towards zero radiation since Q eventually is going to
equal zero.


Could I interest your cat in a pair of fuzzy mittens?

Is this why the decreasing oscillation is defined as a dummy load on
this newsgroup?


No.

The term comes up so often that I am compelled to look for what I am
missing, especially since carbon
is conductive and thus in the minds of many must therefore be
radiative!


If Star Trek is to be believed, you are a carbon unit.
Tie a shielded feed line to your big toe and get back to
us on the amount of DX worked.
I'll even grant you the benefit of a doubt, and let you ground
your other toe to a suitable ground rod, radials, etc if needed
for proper operation of the carbon unit miracle whip.

Ofcourse the statement bandied around that if a material is
condunctive then it must radiatiate
could become fact instead of an old wives tales if stated enough
times.


I think it would hurt to see that statement repeated too many
times regardless if true or not.

The problem with your antenna will not be explained using fairy
tales and perceptions of what you think other hams might think.
All you need is regular old proven textbook theory which is available
to most anyone. If you have burned all your books in a past
fit of intellectual rage, maybe you should consider stocking up on
a few new ones. You can buy them online and have them delivered
via UPS, USPS, and other freight carriers. So you don't even have
to step outside the front door to gain this new perspective on the
"Unwin" antenna.


You did not present any logical thiknking on the subjet


just following your lead i guess.

Following the logic of my posting it shows a clear conflict between
normal thinking and mine.


ah, so that is it. your logic is not normal thinking.

In my thinking as neutrinos particle which is a
type of carbon because it is a side product of fusion


is this an example of your abnormal thinking? seems pretty strange that a
small uncharged particle that passes through most matter as if it weren't
there could be a type of carbon which is an atom.

Thus by my definition a carbon byproduct will never rest on a carbon
product as a "free" electron
thus radiation cannot occur!


i just loaded up some graphite from a pencil (another form of carbon) and it
did indeed radiate.

The conclusion of the above logic is that
a superconducting member
cannot radiate because resistivity is zero.


Whoa! then what about the guy that has patented a superconductive
antenna??? you aren't going to tell me now that they issue patents for
things that don't work????