A WarDragon kit listens through several receivers at once. This article lists what each one covers, which tier carries it, and what a detection record contains for each signal type.
The receivers
| Signal | Band | Pro | Elite |
|---|---|---|---|
| Remote ID over Wi-Fi | 2.4 and 5 GHz | Detected and decoded | Detected and decoded |
| Remote ID over Bluetooth Long Range | 2.4 GHz | Detected and decoded | Detected and decoded |
| DJI OcuSync 2 and 3 | 2.4 and 5.8 GHz | Detected and decoded | Detected and decoded |
| DJI OcuSync 4 and newer | 2.4 and 5.8 GHz | Detected; decoded with DragonScope | Detected; decoded with DragonScope |
| Analog FPV video | 5 GHz race bands | Not covered | Detected |
| Telemetry and control links | 900 MHz and multi-band | Not covered | Detected, decoded where the link allows |
The FPV and telemetry rows depend on the second software-defined radio, which is fitted at manufacture on Elite kits and cannot be added to a Pro kit later. See The second radio on Elite kits.
What a record contains
Remote ID. The aircraft broadcasts its own identifier, position, and operator location, and the kit decodes it. Whatever the aircraft chooses to broadcast is what the record carries.
DJI OcuSync 2 and 3. Decoded on every kit with no subscription and no connection. DJI aircraft broadcast identification only while the motors are spinning, so an aircraft that is powered on but sitting still will not appear. See Why a bench test shows no DJI detections.
DJI OcuSync 4 and newer, without DragonScope. The aircraft is detected and given a hash-based per-flight identifier for tracking and correlation, plus a signal-based distance estimate. There is no serial number, position, or velocity data.
DJI OcuSync 4 and newer, with DragonScope. The flight resolves to a serial number, aircraft type, drone position, speed, heading, pilot position, home point, and signal data. DragonScope needs an active internet connection; see DragonScope and internet connectivity.
Analog FPV video. The signal carries no position of its own, so the record uses the kit’s own GPS position as the location. See GPS: how the unit knows where it is.
Telemetry and control links. Position is included when the link decodes cleanly. Otherwise the record uses the kit’s GPS position.
What no receiver sees
An aircraft that transmits nothing at all is outside the reach of any RF detector. Signal classes explains the eight classes of drone radio link and which ones a receiver can see.
Related
- WarDragon User Guide, Section 1.3 — what it detects
- WarDragon User Guide, Section 1.5 — DragonScope
- Antennas: what ships, what you can change, and why range is not published