On Fri, 31 Oct 2008 04:18:35 -0500, Scott Stephens
wrote:

Can NEC2 plot radiation resistance vs. frequency?

Yep. For example, 4NEC2
http://home.ict.nl/~arivoors/
can plot:
http://802.11junk.com/jeffl/antennas/gnd-plane-02/slides/impedance.html
for this ground plane antenna:
http://802.11junk.com/jeffl/antennas/gnd-plane-02/

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558