NEC2 example plots

Examining yagi reflector length

( 0.508 was chosen as nominal reflector length)
Z0
(ohms)		Freq.
(MHz)		ReflectorDrivenDirectorScale
factor		Uncorrected
(MHz)		Gain
(dBd)		F/B
(dB)
41.0 146.0 0.470 0.300 0.4830.300 0.463 0.9416137.481 4.7 0.8
41.4 146.0 0.480 0.300 0.4830.300 0.463 0.9397137.195 5.4 2.1
43.5 146.0 0.490 0.300 0.4830.300 0.463 0.9362136.679 5.8 3.6 3.5 dB
47.4 146.0 0.500 0.300 0.4830.300 0.463 0.9332136.242 6.0 5.1
52.8 146.0 0.510 0.300 0.4830.300 0.463 0.9315135.999 5.9 6.5
58.7 146.0 0.520 0.300 0.4830.300 0.463 0.9316136.010 5.7 7.5
63.9 146.0 0.530 0.300 0.4830.300 0.463 0.9332136.248 5.3 7.8
67.7 146.0 0.540 0.300 0.4830.300 0.463 0.9355136.587 4.9 7.5
70.1 146.0 0.550 0.300 0.4830.300 0.463 0.9378136.918 4.6 6.8
71.7 146.0 0.560 0.300 0.4830.300 0.463 0.9398137.207 4.3 6.2