Free-Space Path Loss (FSPL) & Wireless Radio Link Budget Calculator
Calculate electromagnetic Free-Space Path Loss (FSPL in dB), received signal power (Prx in dBm), and operational link fade margin for Wi-Fi, 5G cellular, and satellite RF links.
Calculator Inputs
Live Real-TimeFree-Space Path Loss (FSPL in dB)
Received Signal Power (PRX in dBm)
-78.04 dBm
Fade Link Margin (dB)
11.96 dB
Robust RF Link: Margin exceeds 10 dB, ensuring reliable connectivity against atmospheric fading.
Radio Link Budget Profile
Detailed Calculation Breakdown
Calculation Methodology
FSPL Formula: FSPL (dB) = 20*log10(Distance_km) + 20*log10(Freq_MHz) + 32.44. Received Power: Prx = Ptx + Gtx + Grx - FSPL - Cable Losses.
Important Legal & Educational Disclaimer
This telecommunications and RF engineering tool calculates Friis electromagnetic transmission budgets.
This calculator is designed for educational and informational purposes only based on public statutory frameworks. The outputs do not constitute binding financial, tax, or legal advice. We assume no liability for decisions made based on these estimations. Always verify with the relevant official authorities or a certified professional advisor.
Frequently Asked Questions
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