The Download Now link yields the version for Snow Leopard (10.6). See Related Links below for the version compatible with Mac OS X 10.5 and 10.4.
DESCRIPTION
cocoaNEC is a Mac OS X application intended primarily for the design and modeling of antennas.
cocoaNEC is a Universal Binary Cocoa based application. It runs natively on both Intel based and PowerPC based Macintosh computers that use Mac OS X 10.4 (Tiger) or newer.
The application is free and it can be downloaded from the Download Now link.
STEFANOAZ I'm grateful to w7ay for making NEC available with a helpful GUI and other enhancements. It's an important program to have for RF engineers and hobbyists. Nice to see a good port available to Mac users. (Version 2.0)