NEC2 example plots

Examining yagi director spacing

Z0
(ohms)
Freq.
(MHz)
ReflectorDrivenDirectorScale
factor
Uncorrected
(MHz)
Gain
(dBd)
F/B
(dB)
16.8 146.0 0.508 0.300 0.4830.100 0.463 0.9997145.951 5.8 15.0
21.8 146.0 0.508 0.300 0.4830.125 0.463 0.9888144.358 6.0 14.4
27.1 146.0 0.508 0.300 0.4830.150 0.463 0.9778142.764 6.2 13.8
32.0 146.0 0.508 0.300 0.4830.175 0.463 0.9676141.263 6.3 12.9
36.3 146.0 0.508 0.300 0.4830.200 0.463 0.9582139.896 6.3 11.6
40.3 146.0 0.508 0.300 0.4830.225 0.463 0.9499138.679 6.3 10.1
44.0 146.0 0.508 0.300 0.4830.250 0.463 0.9427137.630 6.2 8.7
47.8 146.0 0.508 0.300 0.4830.275 0.463 0.9367136.753 6.1 7.4
52.0 146.0 0.508 0.300 0.4830.300 0.463 0.9319136.053 6.0 6.3
56.7 146.0 0.508 0.300 0.4830.325 0.463 0.9283135.534 5.8 5.4
62.3 146.0 0.508 0.300 0.4830.350 0.463 0.9260135.195 5.6 4.7
68.8 146.0 0.508 0.300 0.4830.375 0.463 0.9251135.066 5.3 4.3
76.6 146.0 0.508 0.300 0.4830.400 0.463 0.9260135.192 5.0 4.0