CocoaNEC is a free Mac OS X application used for designing and modeling antennas. It is built using the Cocoa framework and can be downloaded from the Download page. The source code for non-commercial use is also available for free. The Tiger version of cocoaNEC uses multiple cores of a processor when modeling an antenna at multiple frequencies, while the Snow Leopard version will use multiple cores for other parts of NEC.
v0.8
-lead models by modeling a transmission line with the admittance matrix of a NEC NT (network) card. For modeling common mode current, the shield of a coax cable can also be included.
