Hi Ed
Did you miss my post??? Or, did misunderstand your question.
This
antenna is so easy to model with Roy's EZNEC that I suspect it would
be an excellant "first try" for you. Send Roy a few $$ and you will
soon realize that you have spent some money well.
I'd be willing to show you how to model it, and I am a novice user
of
EZNEC. Your question certainly doesnt require an expert on EZNEC to
be answered very clearly.



No, Jerry, I did not miss your post.... but it did not answer my
question. You modeled the antenna I described, apparently, but not at
the frequencies of intended operation. Yes, it is a 75foot halfwave
center fed, etc, etc, but I was looking for either feedpoint impedence
or a calculated feedpoint SWR into 50 ohm transmission line on three
frequencies, 3993KHz, 5400 KHz, and 7240KHz. Owen has subsequently
provided the figures I was looking forward, although he wasn't happy
with it. He wanted more info to provide a more accurate model, and I
was only looking for a "close" figure.


Thanks for your input, Jerry.

Ed