Calculators » Line of Sight (LoS) Calculator | Radio Horizon Tool

Line of Sight (LoS) Calculator | Radio Horizon Tool

line of sight calculator radio horizon tool antenna link planning microwave link calculator LOS distance calculator LOS formula

The Line of Sight (LOS) Calculator determines whether a clear, unobstructed straight path exists between two points, accounting for Earth’s curvature and obstacles. It is crucial for microwave links, broadcast towers and point to point wireless systems.

Inputs

Outputs

EXAMPLE:

  • INPUTS:

    • Height of Transmit Antenna, in meters (input1) : 30
    • Height of Receive Antenna, in meters (input2) : 50

  • OUTPUT:

    • Total Line of Sight Distance, in Km , dl (output1) : 44.79
    • Radio Horizon, Service Range, dr (output2) : 51.698

Line of Sight Formula

Line of Sight Formula

Benefits/Applications

  • Determines link feasibility: Helps decide if two antennas can communicate without obstacles.
  • Reduces field visits: Engineers can pre assess potential sites virtually.
  • Essential for high frequency planning: LOS constraints are critical at microwave and millimeter wave bands.
  • Incorporates Earth curvature : Provides realistic calculations for long distances.

Summary :

Use the LOS Calculator to verify connectivity between two sites, optimize antenna heights and ensure reliable signal propagation for wireless and RF links.