3el-inverted-v.nec

zip contains tool for Antenna Modelling with examples

CM 3 element inverted V for 40m, one support,
CM with reflector and director connected to guy-wires
CE 
'
SY hgh=21		' Height tower
SY len = 10.472		' Length radiator
SY ang=110		' Angle between wires
SY z=len*cos(ang/2), x=len*sin(ang/2)
'
GW	1	20	-X	0	hgh-Z	-0.1	0	hgh	#12 ' radius for #12 wire
GW	2	1	-0.1	0	hgh	0.1	0	hgh	#12
GW	3	20	0.1	0	hgh	X	0	hgh-z	#12
'
SY refl = 10.527 	' Lenght reflector
SY refd = 6.8609	' Distance from radiator
SY refa = 30		' Guy wire angle with XY plane
'
SY rzi = refd*sin(refa)	' Intermediate calculation values
SY ry = refd*cos(refa)
SY refh = hgh-rzi
SY rz=refl*cos(ang/2), rx=refl*sin(ang/2)
'
GW	11	20	-rx	-ry	refh-rz	-0.1	-ry	refh	#12 ' radius for #12 wire
GW	12	1	-0.1	-ry	refh	0.1	-ry	refh	#12
GW	13	20	0.1	-ry	refh	rx	-ry	refh-rz	#12
'
SY dirl = 10.12		' Length reflector
SY dird = 5.4		' Distance from radiator
SY dira = 30		' Guy wire angle with XY plane
'
SY dzi = dird*sin(dira)
SY dy = dird*cos(dira)
SY dirh = hgh-dzi
SY dz=dirl*cos(ang/2), dx=dirl*sin(ang/2)
'
GW	21	20	-dx	dy	dirh-dz	-0.1	dy	dirh	#12 ' radius for #12 wire
GW	22	1	-0.1	dy	dirh	0.1	dy	dirh	#12
GW	23	20	0.1	dy	dirh	dx	dy	dirh-dz	#12
'
GE
'
GN	2	0	0	0	14	.006	' Sommerfeld ground
EX	0	2	1	0	1	0	' Voltage source
FR	0	1	0	0	7.05		' Design frequency
EN