stack.nec

zip contains tool for Antenna Modelling with examples

CM Stack example 
CE

GW 1 21 -285 -210.79 480 -285 210.79 480 0.3335
GW 2 21 -213 -198.13 480 -213 198.13 480 0.34
GW 3 21 -125 -196.43 480 -125 196.43 480 0.341
GW 4 21 74   -193.64 480 74   193.64 480 0.343
GW 5 21 285  -186.62 480 285  186.62 480 0.347

GM 5 1 0 0 0 0 0 360 0				' Copy and move above wires 

'GW 6 21 -285 -210.79 840 -285 210.79 840 0.3335 ' Replaced by GM card
'GW 7 21 -213 -198.13 840 -213 198.13 840 0.34
'GW 8 21 -125 -196.43 840 -125 196.43 840 0.341
'GW 9 21 74 -193.64 840 74 193.64 840 0.343
'GW 10 21 285 -186.62 840 285 186.62 840 0.347

GS 0 0 .02540
GE 1
GN 2 0 0 0 13.0 0.005
EX 0 2 11 0 1 0
EX 0 7 11 0 1 0
LD 5 0 0 0 3.0769E7
FR 0 1 0 0 14.175 1
EN