Examples
Examples
Try the starting example
- Frequency (MHz)
- 2400
- Separation (km)
- 1
- Ideal free-space path loss (dB)
- 100.052008
Try another scenario
- Frequency (MHz)
- 2640
- Separation (km)
- 1
- Ideal free-space path loss (dB)
- 100.879862
Calculation method
Calculation method
Ideal free-space path loss (dB)
20 log10(4 pi distance×frequency/c), c=299792458 m/s.
Symbols and units
- a
- Frequency (MHz)
- b
- Separation (km)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Frequency, distance. Returns Ideal free-space loss. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Frequency (MHz): minimum 1e-12, maximum 1000000000000.0. Separation (km): minimum 1e-12, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.