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Radio Horizon Distance

Estimate geometric radio horizon distance from two antenna heights using an explicit effective-Earth factor.

Inputs

Inputs

Range: 0.1–1,000 m

Enter antenna A height above local ground in meters, not tower elevation above sea level.

Range: 0.1–1,000 m

Enter antenna B height above local ground in meters, using the same height datum.

Range: 1–2

Enter effective-Earth radius factor k for the propagation assumption; it is an atmospheric model input, not a universal constant.

Result

Geometric radio-horizon distance (km)
45.157
Geometric radio-horizon distance (mi)
28.059

Formula

Calculation logic

Formula definitions and substituted values.

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