Turn Every Radio Signal Into a Position Fix
Azimuth is a decentralized network of passive SDR receivers that listens to existing LTE, 5G, TV, and FM broadcasts to build a global positioning and timing layer — without transmitting a single watt.
How It Works
Listen
Your node passively receives timing signals from cell towers, TV stations, and FM broadcasts already around you.
Measure
The Azimuth daemon extracts precise timestamps from each signal using Time-Difference-of-Arrival algorithms.
Earn
Observations flow to the network. Better coverage and uptime mean higher rewards.
Signal Targets
LTE/5G
Cell tower reference signals (PSS/SSS/CRS) — broadcasting precise timing 24/7
Digital TV
High-power DTV pilots covering vast areas with stable, predictable timing
FM Radio
Ubiquitous FM RDS subcarriers with embedded timing data
LEO Satellites
Coming soon — Starlink and LEO downlinks for sky-ground positioning
Node Tiers
Tier 0 — Mobile Observer
Free
Run the Azimuth app on your Android phone. Passively collects cell tower, GNSS, and WiFi survey data to build the radio environment map. Zero hardware cost.
Your phone is all you need
Tier 1 — BYOD
~$30
Plug an RTL-SDR V4 dongle into any Windows or Linux machine. Install the Azimuth daemon. Capture SDR signals for higher rewards.
Upgrade from Tier 0
Tier 2 — Dedicated Node
~$150–250
Standalone unit with GPS-disciplined timing, outdoor antenna, 24/7 operation. Higher rewards.
Tier 3 — Coherent Array
~$400–600
Multi-channel coherent SDR with 5-element antenna array. TDOA + AoA. Premium tier.
Network Stats
6.4M+
Signal Sources
across 9 data networks
260K+
Coverage
H3 hexes mapped
151
Network Nodes
registered operators
2.1M+
Observations
+106,150 today
All the Signals.
None of the Licensing.
Traditional positioning needs licensed spectrum and high-power transmitters. Azimuth takes the opposite approach — passively listening to signals already there. No transmission, no licensing, no interference, no regulatory barriers. Deploy anywhere.
- ✓Receive-only — no spectrum license needed in any jurisdiction
- ✓Works indoors — LTE and FM penetrate buildings
- ✓GPS-independent — works when satellites are jammed or spoofed
- ✓DePIN-native — the network grows with every node
Ready to Join?
Start with just your phone — or plug in an SDR dongle for more.