Free-Space Path Loss Calculator

This calculator is used to predict the theoretical attenuation between two antennas in free space by entering the distance, frequency, and antenna gains.


Transmit Antenna Gain:
Receive Antenna Gain:


Free spave path loss formula d = Distance between the antennas.
F = Frequency
G (Tx) = The Gain(dBi) of the Transmitting Antenna.
G (Rx) = The Gain(dBi) of the Receiving Antenna.
c = Speed of light in vacuum (Meters per Second)

* All conversions are based on free space conditions (impedance of 377 ohm)

Additional Resources:

Product Showcase

Double Ridge Guide Horn Antenna

Double Ridge Guide Horn Antenna
  • 18 GHz to 40 GHz
  • Precision machined, Rugged Construction
  • Broadband High Frequency

High gain, low VSWR, and rugged design make this dual ridge horn antenna excellent for both immunity and emissions testing.


Additional Resource

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This tool will calculate the maximum coverage that the antenna will cover from a specified distance and antenna's half-power beamwidth. [more...]