NEC2 example plots

Examining yagi director length

( 0.463 was chosen as nominal director length)
Z0
(ohms)		Freq.
(MHz)		ReflectorDrivenDirectorScale
factor		Uncorrected
(MHz)		Gain
(dBd)		F/B
(dB)
78.1 146.0 0.508 0.300 0.4830.300 0.370 0.9500138.699 3.9 8.6
77.3 146.0 0.508 0.300 0.4830.300 0.380 0.9511138.860 4.0 8.7
75.5 146.0 0.508 0.300 0.4830.300 0.390 0.9500138.707 4.1 8.8
73.4 146.0 0.508 0.300 0.4830.300 0.400 0.9488138.527 4.3 8.8
70.9 146.0 0.508 0.300 0.4830.300 0.410 0.9473138.309 4.5 8.7
68.0 146.0 0.508 0.300 0.4830.300 0.420 0.9454138.032 4.8 8.6
64.8 146.0 0.508 0.300 0.4830.300 0.430 0.9431137.686 5.0 8.4
61.1 146.0 0.508 0.300 0.4830.300 0.440 0.9402137.270 5.3 8.0
57.1 146.0 0.508 0.300 0.4830.300 0.450 0.9369136.783 5.6 7.4
53.0 146.0 0.508 0.300 0.4830.300 0.460 0.9329136.207 5.9 6.6
49.1 146.0 0.508 0.300 0.4830.300 0.470 0.9285135.562 6.1 5.5
45.8 146.0 0.508 0.300 0.4830.300 0.480 0.9237134.860 6.2 4.3