trapdipole.nec

zip contains tool for Antenna Modelling with examples

CM Trap Dipole:  15-20 Meters
CM Example of Trap load placement
CE

GW 1 41 0.0 -10.76433 0.0 0.0 10.76433  0.0 0.04153
GW 2 1 0.0 -11.26268  0.0 0.0 -10.76433 0.0 0.04153	' Trap wire
GW 3 1 0.0 10.76433   0.0 0.0 11.26268  0.0 0.04153	' Trap wire
GW 4 8 0.0 -13.62485  0.0 0.0 -11.26268 0.0 0.04153
GW 5 8 0.0 11.26268   0.0 0.0 13.62485  0.0 0.04153
GS 0 0 .3058
GE 0

LD 5 0 0 0 30769000		'Al

SY Q=235, L=3.3uH, C=17.41pF	
LD 6 2 1 1 Q L C		'Trap load
LD 6 3 1 1 Q L C
EK

EX 0 1 21 0 1.0 0.0 0.0 0.0
GN -1
FR 0 1 0 0 14.1 0.0 0.0 0.0	' 20m
'FR 0 1 0 0 21.1 0.0 0.0 0.0	' 15m
EN