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hfvhfdirectionalbeamcompact

HB9CV

Compact 2-element phased directional antenna

Source: Rothammel, Vol. 1, Ch. 14.2.2, p. 248
Input Parameters
MHz
mm
Results
Driven Element
0.9729m
Director
0.9238m
Element Spacing (= Boom)
0.2483m
Gamma Match Driven (from center)
63mm
Gamma Match Director (from center)
60mm
Phasing Line Length
261mm
Gain
4.2dBd
Feed Impedance
50Ω
Diagram
0.97 mDE0.92 mD0.25 m
Radiation Pattern
-3 dB-10 dB-20 dB0 dB0°90°180°270°Max: 9.1 dBiF/B: 15.0 dB