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TFD-42 edited this page Oct 1, 2026
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RF signal triangulation + spectrum allocation lookup for the Flipper Zero and Android. The Flipper streams live Sub-GHz RSSI over USB or Bluetooth LE; the Android app logs GPS + signal, estimates a transmitter's location on a map, and looks up the regulatory allocation of any frequency you observe.
Honest disclaimer: this is a low-cost, mobile RSSI approach. It gives an approximate search area, not a GPS-grade fix. Read Understanding Accuracy before trusting any output.
| I want to… | Page |
|---|---|
| Install and take my first fix | Quick Start |
| Sweep the whole 300–928 MHz range automatically | Rolling Scan |
| Connect wirelessly over Bluetooth | Bluetooth Setup |
| Understand why my error is 15 m or 150 m | Understanding Accuracy |
| Get the best fix in the field | Field Guide |
| Fix a connection problem | Troubleshooting |
| Build the FAP/APK myself | Building from Source |
- ✅ A mobile RF telemetry pipeline — RSSI → log-distance model → Nelder–Mead trilateration → estimated location + RMS error.
- ✅ Rolling scan — sweeps 300–928 MHz in 1 MHz steps, classifies signals as STRONG / MED / SKIP, and feeds them to the Roll Scan tab for one-tap triangulation.
- ✅ Frequency DB browser — 35 pre-loaded entries (ISM/SRD, LoRa, TPMS/RKE, PMR446, aviation, Polycom, GSM-R SBB) with a dedicated Switzerland/CH section.
- ✅ Genuinely useful for lost stationary trackers, interference hunts, keyfob/garage transmitters, and RF education — 15–50 m accuracy in open environments.
- ❌ Not direction finding (no antenna array), not sub-10 m precise, not for moving transmitters, not reliable indoors, and not for surveillance or evidence.
See the main README for the full feature list, field-validation table, and comparison with real RF equipment.