Antenna Height Calculator
Calculate the required tower height for line-of-sight coverage over a given distance, accounting for earth curvature and remote antenna height.
Inputs
km
m
Results
Required Tower Height
2.86 m
Total LOS Distance
20 km
Tower Horizon Distance6.97 km
Remote Horizon Distance13.03 km
1st Fresnel Zone Radius (2.4 GHz)24.99 m
Max LOS from 30m Tower22.57 km
How to Use This Calculator
- Enter the target distance to the remote station.
- Set the remote antenna height (ft) and K-factor (effective Earth radius multiplier -- 4/3 standard).
- Review the required antenna height for line-of-sight clearance and horizon distances from both ends.
- Increase antenna height or reduce path length if required height exceeds tower constraints.
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Formula
h = d² / (2 × k × R_earth)Related Calculators
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