Cecil:

Did you remember to attach the file? I don't see it, but would love to
study your changes...
At ~2.7 ohms I can use a 1:16 balun (reversed direction from conventional
use) to mate the antenna with 50 ohms, and get an acceptable SWR...
Cecil, try to hear this in a positive manner: If I must conform to EZNEC,
then any creativity must be abandoned... If I conform to all the rules of
the past and the "Absolute Truths" encompassed by any application--how could
I ever hope for a new discovery of geometry or configuration, or the
possible use of un-used manipulations of existing rules?
If one travels the same road, takes the same plane, rides the same rail,
boards the same boat, walks the same path--he sees only the same sights,
that which is common place.... even futile paths invoke my curriosity--as
just a change of scenery can be enjoyed many times.
If that argument is carried out to its nth degree, only one question would
remain, "Why should I bother with any of this?", it would be quite easy for
a programmer to create a program which quizzes you on ant type (monopole,
dipole, yagi, 1/2 wave, 1/4 wave, center loaded, bottom loaded, etc, etc),
the freq etc... then constructs the antenna for you. Including suggesting
height, mounting brackets and a host of other varibles and conditions that
tasks the mind to consider... In other words, once I give control and
authority to EZNEC, why should it not "do it all?"
But then, even if it did, I would still dilly around with these copper,
aluminum and stainless bits and pieces. grin
You have talked me back into abandoning EZNEC....

Regards,
John

--
I would like to point out, I do appreciate the "Been there--done that!"
posts. Indeed, now your observations, comments and discourse should be
filled with wisdom--I am listening!!!
"Cecil Moore" wrote in message
...
John Smith wrote:

Cecil:

Take a look at this folded wave monopole...
I am playing with a reflector and director to sandwich this driven
element
between....
This is the design I have in mind, NO groundplane radials when used as a
stand-alone vertical monopole/end-fed.

There are warnings in EZNEC about segments not lining up
between close spaced wires. My 29 dBi omnidirectional
antenna is an example of what happens when one ignores
the segment alignment between closely spaced segments.

I have modified your segmentation to try to follow the
EZNEC guidelines and that file is attached. There is
quite a change in the results. The feedpoint impedance
went from 2.787+j15.47 to 0.7587+j22.69, the gain went
from 7.23 dBi to 3.16 dBi, and the TOA went from 6 deg
to 9 deg. I standardized on one foot per segment.

I don't really understand what you are trying to do and
am just the messenger.
--
73, Cecil http://www.qsl.net/w5dxp

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