thanks for the info and encouraging news about correlation with real life
Yes, it is interesting how many possible solutions there are within the
antenna design, and how easy it is to miss that ideal configuration. So far I
played with my 3 el. Quad design, and unless I start with my experimental
design and then try to optimize it with AO (I get small improvement) the AO
will take off and end up with some designs that are way off the "achievable".
So it looks like it is very beneficial to start with some known good design
and trying to improve it.
I am trying now do get handle on the modeling and optimization programs and
go over my old Quagi - Razor designs. There is new (freeware) 4NEC2 program
which uses NEC engine and adds optimization (generic algorithm) features and
also MultiNEC, which allows import and export of designs between various
software and also study the results over the range of parameters via Excel
spreadsheet. Unfortunately I was very QRL in the past, but hopefully, now
with cold wx I should have more time to get around to play with soft
I think that my 7el. stacked Razors would also be very close to the 100m Yagi
array. Will try to analyze and compare it in software. It is amazing what
good (outrageous) antenna can do. Those who tried it, know it :-) What about
(rota)floating curtain array over salt water?
73 Yuri, K3BU