unwin_mod.nec

zip contains tool for Antenna Modelling with examples

CM Modified Unwin beam.
CM This is the Unwin beam of Unwin1.nec, but modified by
CM removing one reflector and readjusting the remaining
CM reflector. It exhibits very high front/back ratio, but only
CM over a fairly narrow frequency range. The feedpoint
CM resistance is also much smaller than that of the original
CM two-refelector design Unwin1.nec. Only a few minutes were
CM spent adjusting the reflector; better optimization in one
CM respect or another could probably be made.
CM In practice, small imperfections in the antenna and
CM environment are likely to reduce the front/back ratio
CM somewhat from the value reported by the program.
CM See antenna notes for Unwin1 for more information.
CE
GW 1 10 -21.5 199.8 820 -21.5 -199.8 820 0.025
GW 2 10 62.1524 195.401 820 62.1524016 -195.401 820 0.015
GW 3 11 -80.4444 205.966 820 -80.44437 -205.966 820 0.025
GW 4 9 626.15 182.195 820 626.15 -182.195 820 0.015
GW 5 9 192.39 182.742 820 192.39 -182.742 820 0.015
GW 6 9 236.23 181.633 820 236.23 -181.633 820 0.015
GW 7 9 122.82 182.329 820 122.82 -182.329 820 0.01
GW 8 10 353.2 185.816 820 353.2 -185.816 820 0.01
GW 9 10 383 187.242 820 383 -187.242 820 0.01
GW 10 10 89.5709 185.954 820 89.5709 -185.954 820 0.01
GW 11 11 -174.392 207.133 820 -174.392 -207.133 820 0.025
GW 12 10 -18.7345 197.701 820 -18.7345 -197.701 820 0.01
GS 0 0 0.0254		' All in in.
GE 0
EK
EX 6 3 6 0 1 0
GN -1
FR 0 1 0 0 14.2 0
EN