User`s guide

BreezeNET DS.11 Series User’s Guide
C-10
R = ½ √xD
R: radius of the first Fresnel zone.
λ: wavelength (expressed in feet).
D: distance between sites (expressed in Km).
Figure C-8: Fresnel Zone Clear of Obstacles
When at least 80% of the first Fresnel Zone is clear of
obstacles, propagation loss is equivalent to that of free space.