The Fresnel Zone Calculator

A choice of two calculations: one based upon distance and the other based upon co-ordinate selection.

Define a Distance

The simplest calculation using an ideal earth globe. The distance between the link ends is defined. The erth curvature is calculated and refraction added


Define the Co ordinates

The link end co-ordinates are given: this allows the terrain profile to be calculated. The earth curvature is compensated for before calculating the fresnel zone.