syack3el20.nec

zip contains tool for Antenna Modelling with examples

CM Rele 20m (30mm/25mm/20mm Pipe)
CE
sy len=5.315
GW 1 5 0.0 -.9  20.0 0.0  .9  20.0  .015
GW 2 5 0.0  .9  20.0 0.0  2.7  20.0  .0125
GW 3 5 0.0 -2.7  20.0 0.0 -.9  20.0  .0125
GW 4 7 0.0  2.7  20.0 0.0  len  20.0  .01
GW 5 7 0.0 -len  20.0 0.0 -2.7  20.0  .01

sy dir=5.0
GW 6 5  2.6 -.9  20.0  2.6  .9  20.0  .015
GW 7 5  2.6  .9  20.0  2.6  2.7  20.0  .0125
GW 8 5  2.6 -2.7  20.0  2.6 -.9  20.0  .0125
GW 9 6  2.6  2.7  20.0  2.6  dir  20.0  .01
GW 10 6  2.6 -dir  20.0  2.6 -2.7  20.0  .01

sy ref=5.45
GW 11 5 -2.6 -.9  20.0 -2.6  .9  20.0  .015
GW 12 5 -2.6  .9  20.0 -2.6  2.7  20.0  .0125
GW 13 5 -2.6 -2.7  20.0 -2.6 -.9  20.0  .0125
GW 14 7 -2.6  2.7  20.0 -2.6  ref  20.0  .01
GW 15 7 -2.6 -ref  20.0 -2.6 -2.7  20.0  .01

SY freq=14.05, wl=299.8/freq
GM 0 0 0 0 0 0 -wl/2 0	' Move on Y for wl/2
GX 20 010		' Mirror in XZ
GE 1
GN 2 0 0 0 13  0.005 0.0 0.0
FR 0 1 0 0 freq 1
EX 0 1  3  0  1.0 0.0
EX 0 21 3  0  -1.0 0.0	
EN