Estimate median HF path loss (incl. a simple MUF/LUF model) between two Maidenhead grid locations, then run a link budget and compute SNR / SIR / SNIR for your bandwidth and noise/interference assumptions. This is a lightweight engineering estimator (not a substitute for full ITU-R/VOACAP-grade tools).
| FoF2 (MHz) | MUF (MHz) | LUF (MHz) |
|---|---|---|
| — | — | — |
Path loss is plotted for the next 24 hours. MUF/LUF are hidden for groundwave regimes (below ~1.8 MHz).
Uses the propagation loss above as the path loss term. Noise floor uses a simple natural noise approximation and a selectable man-made noise environment (ITU-style piecewise approximation).
| Metric | Value |
|---|---|
| Path Loss used (dB) | — |
| Received power (dBm) | — |
| Received power density (dBm/Hz) | — |
| SNR (dB) | — |
| SIR (dB) | — |
| SNIR (dB) | — |
Notes: Grids default to IO91TI → JN18DU if left blank. For MF groundwave (<1.8 MHz) the MUF/LUF terms are hidden.