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This is my simple implementation of the ARRL Antenna Book design equations for the axial-mode helical antenna.

Simple implementation of the ARRL Antenna Book design equations for the axial-mode helical antenna.

Helical antennas invented by John Kraus give a circular polarized wave. They are one of the easiest to design. Find a tube with a circumference equal to one wavelength, and wrap wire in a helix spaced a quarter wavelengt

This article summarizes probably the most extensive numerical modelling calculations on the helical antenna ever performed.

Calculating HF helical whip antenna for mobile or portable operation