vert20s.nec

zip contains tool for Antenna Modelling with examples

CM 0.28 lamda  GP (50  Ohm feed)
CE
GW 1 11 0.0 0.0 0.0 0.0 0.0  5.6  .01
GS 0 0 1.0
GE 1
EX 0 1  1  0  1.0 0.0
LD 0 1  1  1 0.0E0 0.0E0 2.0E-10
GN 3 0 0 0 13  0.005 0.0 0.0
FR 0 1 0 0 14.15 1
EN