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Old October 20th 06, 09:30 PM posted to rec.radio.amateur.antenna
art art is offline
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First recorded activity by RadioBanter: Sep 2006
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Default A chance to argue about something different

Hi members of the antenna group,
Seems like the group is getting bogged down into sniping, here another
chance
to get back to antennas. I tried with another post yesterday but the
choice of attention is still to those who want to snipe.

With a driven element you have two circular radiation patterns at each
section.
Before you start to focus a beam for gain by adding parassitic elements
you must first collect
maximuml radiation to the desired direction.
Sooooooooooooo............................
with these two circular patterns from the driven element you fold the
pattern in the middle
so that both patterns are in the same direction and the same shape i.e
a circle that expands to a larger circle but holding on to a particular
half power beam width which is an included angle.
So when we start to add parassitics we are able to deal with this
CIRCLE of radiation which then focusses by squeezing of the pattern
since it cannot add to the initial pattern.
I think the above clearly shows that for recovering of radiation from
the rear direction in any form must produce a radiation pattern to the
front by retaining a circular pattern. Now I have achieved
such a transformation of a driven element with a reflector to produce
an initial circular pattern via computor analysis which agrees in my
mind that rear radiation does nothing fto add to the forward radiation
lobe.
This is contrary to the thinking of some pseudo experts on this
newsgroup. So what is really happening, take a shot at it even if you
do not consider your self an expert since we want your participation as
well as the experts who will probably hang back to be guided by what
others have to say.
Now we can ignore this posting since it is about antennas.
We can use a sniping tactic by changing the subject to a direction
that you want .
You can resort to saying I don't understand the question..
We can debate alternative arguments where you tend to disagree and show
why e.t.c .
So what do you want for this newsgroup? ( Are you listening Walt)
An augument, a debate as to why a radiation pattern changed from
circucular or do you prefer to extend the threads from slow code and
others of his type who are not here to talk about antennas. Or should
we await a similar question to get back on track from one of the old
members of this newsgroup who are unhappy with the state of things?.
Your choice guys ! Are you a follower or a leader?
Regards
Art

 
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