In message ,
writes
Look at this for an overview of NEC.

http://en.wikipedia.org/wiki/Numeric...magnetics_Code

At the bottom under External links you will find both free and commercial
implementations.

EZNEC by W7EL is popular among hams and has a free demo version that is
fully functional but limited in how complex a model you can generate.

NEC itself just crunches and produces numbers, but there are several
versions, including EZNEC, which have graphical interfaces to make
it easier to build the model and view the results.

I've used EZNEC+ for years.


I use 4NEC2 - it's free ! Arie Voors used to post here, but I've not
seen anything from him for some time. MMANA is good too, but there's a
lot it can't do.

73 Brian GM4DIJ
--
Brian Howie

---
This email is free from viruses and malware because avast! Antivirus protection is active.
http://www.avast.com