The program is “cocoaNEC” ( ) written by Kok Chen a retired Apple software engineer. I have now found an even better program than EZNEC, that is written specifically for the MAC. I have always wished to have a similar program for the MAC. On my windows PC, I used EZNEC ( ) which costs about $100.
I occasionally have need for an antenna modeling program. One disadvantage, however, is that not all types of programs are written for the MAC.
I like using MAC computers because of the inherent stability of the underlying UNIX operating system, and the immunity to most viruses.
