Friss, free space path loss calculator.

Calculates the Free Space Transmission Loss (FSTL) between two antennas based on:

  • Transmit power.
  • Transmit and receive antenna gains (Gtx & Grx).
  • The distance between the two antennas.
  • The operating frequency.


Given the parameters above, this tool provides the power at the receive and as Prx.



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