Hi All,

I tried this post on the towertalk reflector. I should have tried it
first as I find more of you NEC guy hang out here (why is that
anyway!??!?).

I was modeling a Cushcraft 402CD loaded 40m yagi. I use Nec-Win Plus
and MultiNEC. I enabled stepped diameter correction in both programs
and noticed that in both programs a taper correction didn't occur. The
output from NEC-Win Plus during the taper correction seemed unhappy
because the element resonated around 11Mhz, but the simulation
frequency range was 7 Mhz.

How can I calculate a taper correction for a loaded element?

-Scott, WU2X