Hi there; I am new to the list so sri if this aubject has already been discussed: what are the main advantages of NEC-4 over the NEC-2 ? . 73 Mariusz A. de Georgel VE3PND "Art" -- FAQ on WWW: http://www.contesting.com/antennaware-faq.html Submissions: antennaware@contesting.com Administrative requests: antennaware-REQUEST@contesting.com Problems: owner-antennaware@contesting.com