The most discussed subject in Amateur Radio! lets see how deep we can dive into this subject, from simple wire to space, what works or what will work for You!
VE3SQB ANTENNA DESIGN PROGRAMS
4nec2 antenna modeler and optimizer (qsl.net) this tool is free, the more in depth EZNEC and + will cost $
EZNEC Antenna Software by W7EL let see what it takes to “Model” an antenna