Indeed I do sell modeling programs. But it's not necessary to buy one to
answer your question. The EZNEC demo or any of several other free
programs including NEC-2 is adequate.

Roy Lewallen, W7EL

John Smith wrote:
LOL!!! Hmm, I wonder if anyone sells one? grin

Warmest regards,
John

"Roy Lewallen" wrote in message
...

John Smith wrote:

What would happen if you isolated that second driven element from the
boom (the one you are effecting the phase-shift in, and added another
reflector ( naturally it is in proper phase) behind it? Could you get
the best of two worlds? The advantage of the phase-shift plus a FB
ratio?

That's just the sort of thing antenna modeling programs are for. And
they're good at it.

Roy Lewallen, W7EL