gwave.nec

zip contains tool for Antenna Modelling with examples

CM 1/4 wl vertical with ground wave calculation
CM Select 'use original file' or check gnd-wave box.
CE
GW 1 10 0 0 0 0 0 36.6 .001
GE 1
GN 0 0 0 0 14 .006
EX 0 1 1 0 1 0
FR 0 1 0 0 2.0 0
RP 1 20 37 1000 0 0 5 10 1e3
XQ