Back to antenna optimization, modeling software is a great tool and can save
a lot of tinkering with hardware in the freezing nights, but has to be taken
with a grain of salt. I treat it as a "bring me into the ballpark" tool,
rather than "gospel".

K6STI did great job with his YO and AO and W4ZV used it to optimize his KLM
stacks very closely.

I tried it on my 3 el. Quad design, which was originally designed on the 2m
antenna test range and then scaled to HF bands, which worked quite well,
within 50 kHz in resonant frequencies. When I tried to make it better by
sticking it into optimization software, the software made it better, on
paper. When I readjusted the dimensions accordingly, thing was off and worse
than before. Maybe software did not capture the color of spreaders. There
are still some parameters that modeling does not capture 100% and I am
always taking the modeling results with grain of salt.

There is whole "industry" of antenna "designers" doing it on models and
proclaiming as gospel. Reality is sometimes cruel and doesn't care what the
model says, especially when considering the environment in which antennas
are to operate. Just caution not believe 100% blindly what the model says,
as we saw in case of loading coils. I love the free space designs :-)

YO, AO, MMANA, 4NEC2 are great tools and to see how good they are, just let
them optimize the same design and see how close they get within each other.

Sorry to see Brian, K6STI quit producing ham stuff, but I do not blame him.
I was in the similar situation, developed Cyrillic languages support for
desktop publishing, sold few dozen copies, only to find that there were
hundreds if not thousands in use from Praha to Vladivostok. I can see my
stamp in the fonts files all over the world. So I quit producing the
software and let the Microsoft carry on, now it is built into Windoze.

73 Yuri, K3BU


"Jim - NN7K" wrote in message
.net...
Does this also include ALL Public Libraries (includeing the Library of
Congress)??
Especially those that have Copying Machines?

If so, then DON'T support them, BAN'em!!
A thought-- Jim NN7K


Yuri Blanarovich wrote:
Is this lawyertwist's interpretation?
Like it is not COPYright it is REVENUEright?
Don't you anybody ask to read my copyrighted magazine issue! You will
disrupt the revenue flow of the publisher/authors. Oh, and don't read any
magazines in your dentist's office while you are shaking for the
treatment.