The ZARUBA A3 is a portable, passive RF monitoring device designed to detect analog FPV drone video transmissions across three frequency bands. The system simultaneously scans the 1.3 GHz, 3.3 GHz, and 5.8 GHz bands, providing personnel with early awareness of compatible FPV drone activity in the surrounding area.
Unlike active counter-UAS systems, the A3 is a receive-only device. It does not transmit RF energy or jam communications. When a compatible signal is detected, the system provides audible and visual notification. When signal conditions permit, the received FPV video can also be displayed on the integrated 3.5-inch screen, giving the operator additional information for assessing detected activity.
Compact and weighing approximately 1.4 lbs., the A3 is well suited for EOD teams, bomb squads, law enforcement, public safety, critical infrastructure security, industrial facilities, and other personnel requiring portable drone situational awareness.
| Architecture | Passive Receiver – No RF Emission |
| Scanning | Parallel High-Speed Autoscan |
| Band 1 | 900–1680 MHz |
| Band 2 | 3060–3700 MHz |
| Band 3 | 4990–6000 MHz |
| Nominal Bands | 1.3 GHz / 3.3 GHz / 5.8 GHz |
| Published Detection Range | Up to 4,000 m / 2.5 miles* |
| Full-Range Scan Cycle | 4–8 Seconds |
| Band Selection | Any Combination of Bands Can Be Enabled or Disabled |
| Sensitivity Control | Manual or Automatic, Per Band |
| Interference Filtering | Non-Video Filtering and Channel Blacklist |
| Inverted Video | Supported |
| Tuning Modes | Autoscan / Standard VRX Manual Channel Tuning |
| Antenna Connections | (3) SMA Female |
*Detection range is dependent on the transmitting drone's power, terrain, environmental conditions, antenna configuration, and other RF factors.
| Dimensions Without Antennas | 95 × 158 × 47 mm (3.74 × 6.22 × 1.85 in.) |
| Weight | Up to 650 g (1.4 lb.) |
| Housing | Impact-Resistant PETG Plastic |
| Ingress Protection | IP54 |
| Main Display | 3.5 in. |
| Information Display | Channels, Histogram and Battery Voltage |
| Maximum Published Ambient Storage/Sun Temperature | +140°F (+60°C) |
| Battery | (2) 21700 Li-Ion Cells, 2S |
| Battery Capacity | 4500 mAh / 33.3 Wh |
| Maximum Charge Voltage | 8.4 V |
| Operating Time | Approximately 6–8 Hours |
| Charging | USB Type-C, QC Protocol Required |
| Charge Time | Approximately 4 Hours to Full While Operating |
| Low-Battery Warning | 7.0 V |
| Automatic Shutdown | 6.4 V |
The ZARUBA A3 detects supported RF video transmissions rather than physically detecting every drone in the surrounding airspace. Detection capability therefore depends on the drone and video system transmitting within frequency ranges and signal types supported by the A3. Detection range will also vary based on transmitter power, antennas, terrain, obstructions, RF conditions, and other environmental factors.
The A3 is a passive monitoring device and does not provide RF jamming or other active counter-UAS functionality.
