2lsloper.nec

zip contains tool for Antenna Modelling with examples

CM K6NA - 2 Element 80m Sloper
CE
SY X=135 ft
SY Y=64 ft
SY Z=26 ft

GW	1	11	0	-68 ft 	X	Y	-68 ft	Z	#12
GW	2	11	0	68 ft	X	Y	68 ft	Z	#12
GE	1
EX	0	1	6	00	1.0	0.0
EX	0	2	6	00	1.0	0.0
'
GN	2	0	0	0	13	.005
FR	0	1	0	0	 3.8
EN

'Adding one element to a sloper increases gain in the useful range by about
'4 db.  There is still an insignificant F/B pattern, but improved side null.
'If two high supports exist for this antenna, it is more effective to erect
'a horizontal dipole at the same height, especially considering the reduction
'in received noise that would occur.