ANTENTOP- 01- 2017, # 021

The Three L-Antennas

Summary

The following two graphs (Figures 8 and 9) compare the Relative Gain and % Radiation Efficiency of four kinds of dipoles, each as one of the antenna arms is adjusted through a range of angles.

All feedpoints at ½ wavelength elevation.

Plots stop at the point where the SWR exceeds 2:1.

OCF used is a 1/3-2/3 ratio.

1. Equal-arm Horizontal (dark line, diamond marker). 90 degree = standard horizontal dipole.
2. Equal-arm Vertical (violet line, square marker). 0 degree = standard vertical dipole.
3. OCF Tall (blue line, triangle marker). 90 degree = Tall L-Antenna.
4. OCF Wide (red line, X marker). 90 degree = Wide L-Antenna

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