Radio Horizon Calculator

Calculate the radio horizon distance from antenna height using the standard 4/3 Earth radius refraction model. Shows distance in km, miles, and nautical miles with optical horizon comparison.

How to Use Radio Horizon Calculator

Enter the antenna height in meters or feet and click Calculate. The tool computes the radio horizon distance using the standard 4/3 Earth radius refraction model, showing results in km, miles, and nautical miles.

Step-by-Step Instructions

  1. Enter antenna height
  2. Select unit (meters or feet)
  3. Click Calculate Radio Horizon
  4. View distance in multiple units

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