Fresnel Zone Calculator
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Fresnel Zone Calculator

Calculate Fresnel zone radius for radio propagation

📖 Fresnel Zone

The Fresnel Zone estimates the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy. It multiplies several factors: star formation rate, fraction with planets, habitable planets per star, etc.

📊 Result

💡 Tips & Information

  • Formula: r = √(nλd₁d₂/(d₁+d₂))
  • First zone (n=1) is most important
  • Measured in meters
  • Obstructions cause signal loss
  • Used in wireless link planning
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