How does the Fresnel Zone Calculator work?

Distance between transmitter and receiver (d) Then: Frequency in GHz (f) Then: Formula: radius = 548 × √(d ÷ (4 × f)) Then: Typical target: 60% first zone clearance.

Can you give an example of how to use the Fresnel Zone Calculator?

Example: Input Distance 1km, freq 900MHz gives a result of Radius 8.2m.

Is the Fresnel Zone Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Fresnel Zone Calculator?

Our Fresnel Zone Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Fresnel Zone Calculator

Fresnel Zone Radius Calculator

Path Distance (m)

Frequency (MHz)

Calculates first Fresnel zone radius for wireless links. Ensures line-of-sight clearance for optimal signal strength.

Difficulty:advanced

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Did You Know?

One tree in first Fresnel zone can reduce signal 30-50%; proper clearance critical for long-range links.

References

›Fresnel Zone Calculator

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Fresnel Zone Radius Calculator

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Fresnel Zone Radius Calculator