23df.nec

zip contains tool for Antenna Modelling with examples

CM 146 MHz Direction Finding Yagi
CM 26-36 inch boomlength (depends on mounting)
CM 7.7 dBi gain with greater than 40 dB F/B at 146.565 MHz
CM 1.7 VSWR without matching - 1.1 VSWR with Beta match
CE WB0DGF 2-12-06

GW 1 11  0 0 -20.25  0 0  20.25   0.094
GW 2 11  12 0 -18.75   12 0 18.75   0.188
GW 3 11  24 0 -17.75   24 0 17.75   0.094
GS 0 0 0.0254
GE 0

EX 0 2 6 0 1 0
FR 0 10 0 0 145.0 0.2
EN