Defines how much clearance you need (yes you need more than simple
Line-of-Sight) and for longer links > 3 Km (2 miles) whether you
may have a ground clearance problem from our friendly planet. M.
Fresnel and his theories.
Enter the Total link distance (in Miles or Kilometers), if
you do not enter an Obstacle distance (in Miles or Kilometers)
the calculator will use the mid-point for all calculations (Note: assumes antennas at same height). Finally enter the system Frequency
in MHz and then click the 'Calculate' button. 1 GHz = 1000 MHz e.g.
2400 = 2.4 GHz.
The calculator will generate the radius of the 1st Fresnel zone only Calculations and equations used.
(at the obstable point or the mid-point), the 60% (no obstacle) radius
and the height of the effective earth curvature at the mid-point of
the Total link distance using the effective earth radius.