Friis Path Loss Calculator
Calculate the free-space path loss using the Friis equation:
\[
PL_{\text{dB}} = 20 \log_{10}\!\Bigl(\frac{4\pi R\,f}{0.3}\Bigr)
\]
where \(R\) is in meters and \(f\) is in GHz.
* Enter the distance (m) and frequency (GHz).
Step 1: Enter Parameters
Example: 100 m
Example: 2.4 GHz