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hfdipolemultibanddl7ab

DL7AB Multiband

DL7AB multiband dipole antenna

Source: Rothammel, Vol. 1, Ch. 11.3, p. 208
Input Parameters
MHz
Results
Radiator Length
39.972m
Coil Position (from center)
13.391m
Half Wavelength
42.254m
Quarter Wavelength
21.127m
Diagram
50 Ω19.99 m19.99 m39.97 m
Radiation Pattern
-3 dB-10 dB-20 dB0 dB0°90°180°270°Max: 2.1 dBi