Propagation
VHF/HF audio-propagation characterisation from the rangetest harness —
the platform's coverage curve, the model-vs-measured delta, and the audio-quality trend over time.
sweep=<id> note tag, run across multiple altitudes and lateral offsets. The 3D chart below renders the (lateral × distance) signal-strength surface — terrain shadows show as dips.
bot rangetest — it uploads automatically when the sweep finishes —
or backfill an existing CSV with bot rangetest --upload-csv <file>.
Model attenuation along the ladder, one line per altitude. Higher altitude reaches further — that is the radio horizon.
Each received sample: model attenuation (x) against measured RMS in dBFS (y). The spread is the mixer/weather effect.
Mean received RMS (dBFS, line) and reception rate (%, bars) per run — the platform's audio-quality trend across dates.
Measured signal RMS (dBFS) across the (lateral offset × distance) plane for the selected altitude. Dips are terrain shadows — peaks block line-of-sight to the transmitter at rung 0. Drag to rotate; scroll to zoom.