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Old March 16th 05, 05:14 PM
Wes Stewart
 
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On Wed, 16 Mar 2005 05:21:29 GMT, "
wrote:



The original design is 50 years old.
He infers that he has improved the design,
specifically with respect to F/B


He makes no such claim.
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Old March 16th 05, 04:16 AM
Wes Stewart
 
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On Wed, 16 Mar 2005 02:57:31 GMT, "
wrote:

I don't operate on 40 M so I may be missing something but exactly what is it
that stands
out with this antenna that would make it desirable to hams? Efficiency would
be reflected by the loads
used which is not necessarily "state of the art". He then states "a large
F/B is effected"
but it doesn't show before and after overlaid plots !
Would hams have an interest in a two element 20 M
antenna that have lower TOA than the norm, say 9 degrees instead of the
normal 14 degrees?


That last post got away from me too soon. Yes, I'd like a "TOA" of 9
degrees. Unfortunately, I don't have room for a 110' tower. Now what
do I do?


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Old March 16th 05, 05:25 AM
 
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"Wes Stewart" wrote in message
...
On Wed, 16 Mar 2005 02:57:31 GMT, "
wrote:

snip

That last post got away from me too soon. Yes, I'd like a "TOA" of 9
degrees. Unfortunately, I don't have room for a 110' tower. Now what
do I do?

Use a cell phone
Art


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Old March 16th 05, 05:13 PM
Wes Stewart
 
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On Wed, 16 Mar 2005 02:57:31 GMT, "
wrote:

I don't operate on 40 M so I may be missing something but exactly what is it
that stands
out with this antenna that would make it desirable to hams?


From the title: "Two-Element Driven Array *With Improved Tuning and
Matching* (emphasis added)"

The major claim is that the antenna is more easily adjusted than the
alternatives. This would seem to make it "desirable."


Efficiency would
be reflected by the loads
used which is not necessarily "state of the art".


What "loads"?

He then states "a large
F/B is effected"
but it doesn't show before and after overlaid plots !


He doesn't claim "improved" F/B, only "comparable to that which is
available from a three element Yagi of similar electromagnetic
properties."

So what before and after do you expect to see?

Would hams have an interest in a two element 20 M
antenna that have lower TOA than the norm, say 9 degrees instead of the
normal 14 degrees?


Yeah, I'm still interested in seeing how you can lower the "TOA"
without changing the antenna height, or is that the "secret"?


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