The most basic of all programs for antennas come from Roy
They do nothing but number crunching like a calculator and
will give you an answer close to what other programs provide
but not the same. The program does NOT help the user in any
way other than give you an answer regarding the performance
of what you provide. It does NOT give you any help as to where
you could benefit in any way. When you move beyond the most
basic of antenna programes you can obtain help fr4om the
programs in that you don't have to specify actual dimensions
which may be useles because you can alow those dimensions
to be variable to allow the computor to guide you in the right
direction
to meet your desires. The cost of these type programs are similar
to eznec but can go up as high as a couple of thousand dollars
tho most amateurs should be satisfied with the cheapest versions
Some programs are designed around the yagi only for simplification.
These ofcourse need to be avoided since they are based on the
yagi being unbeatable. So if a choice has to be made then programs
with variable dimension abilities together with a sufficient large
number of pulses are by far superior toi any other computor program.
None of these programs agree with each other because of built in
errors
but if you are looking for something that you would like to agree
with
then anything will do as long as it provides a big number that you are
looking for.
As a side point some programs provide errors because the user
doesn't understand the thinking behind garbage in and garbage out
because there is no oversight with respect to programmers error.
Another point to note with programs that allow variable dimensions
where
if you allow the computor total control when persuing gain e.t.c.
it will produce arrays that reflect the combination of static and
electro
magnetic laws which by consensus is totally unacceptable to experts
So care must be taken with all computor programs since like all of us
they make mistakes too. On the other hand if you wish to explore
outside the box and not be controlled by the programmer by all means
purchase the program that is built to help the user. Who knows you
may find an array that experts avoid which may well be to your
liking.
After all if it works well and fits your needs then to heck with the
experts
who say it is impossible, build it and use it but keep quiet about it
otherwise the super experts will bear down upon you till you take it
down.
All is not lost, I have filed a patent request based on my own
findings
even tho experts are adamant that it is just hand waving so hang on
and we will wait to see how the patent office handles it together with
industries
that are not bound by suedo experts. Remember do not purchase high
profiled computor pragrams that are just number crunchers, buy the
programs that have variable number abilities that supply help for
your
money other than a broken down calculator that just gets you close.
Have fun and get a program that helps you to learn about antennas as
it is way cheaper in the long run
Art