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First Fresnel Zone Radius

Calculate the maximum first-zone radius at a specified point along a radio path.

Inputs

Inputs

Range: 0.1–300 GHz

Enter carrier frequency in GHz for the path being screened; use the same frequency as the link design.

Range: 0.001–1,000 km

Enter total endpoint-to-endpoint path length in km; the selected position must be between the endpoints.

Range: 0.0001–999.999 km

Enter distance from endpoint A in km; keep it greater than zero and less than total path length.

Result

Maximum first Fresnel-zone radius (m)
11.180

Formula

Calculation logic

Formula definitions and substituted values.

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