Clearance Height Requirements Along LOS Path
| Point |
Dist |
Earth Drop |
LOS Height |
Fresnel R |
Min Clear Ht |
Max Obs Ht |
Beam Lower |
Beam Upper |
Status |
Beam Illumination Cross-Section (Height at Range)
| Point |
Dist |
Beam Lower Edge Ht |
Beam Axis Ht |
Beam Upper Edge Ht |
Beam Thickness |
Dead Zone |
Definitions:
Earth Drop = d²/(12.75k) m · LOS Height = interpolated line-of-sight elevation ·
Fresnel R = √(λ·d₁·d₂/(d₁+d₂)) at 1 GHz ·
Min Clear Ht = LOS height above curved earth at that point ·
Max Obs Ht = maximum obstacle height allowed at that distance (ground-referenced) ·
Beam heights are above MSL (antenna base = 0 m MSL assumed).