A body-worn, zero-emission RF threat detection system that autonomously detects drones, RCIED triggers, surveillance devices, and unknown RF threats — without prior signature knowledge.
The 291 Autonomous Monitoring System (AMS) is a standalone, wearable RF threat detection device designed for military and security personnel operating in contested electromagnetic environments. It evolved from the proven 291 Electronic Protection Platform, purpose-built for demanding, real-world operational conditions.
Unlike conventional systems that rely on known threat signature libraries, the 291 AMS employs physics-based detection capable of identifying zero-day RF threats — signals never seen before — making it effective against rapidly evolving adversary tactics.
"Completely standalone. Zero emissions. No phone, no app, no wireless — just immediate, covert threat awareness on the operator's body."
Autonomous detection across the full spectrum of modern RF threats
Detects commercial, FPV, and unknown drone control links across sub-GHz, 2.4 GHz, and 5.8 GHz bands — including proprietary and rapidly-changing protocols.
Identifies remote-controlled IED trigger transmissions in sub-GHz and ISM bands — providing early warning before detonation commands are received.
Detects covert surveillance transmitters, hidden cameras with wireless uplinks, and anomalous RF activity indicative of electronic eavesdropping.
A physics-based detection approach identifies threats through anomaly analysis — no prior signature knowledge required. Catches threats that signature-based systems miss entirely.
Detection that doesn't depend on knowing the threat in advance
Most RF detection systems work by matching signals against a library of known threats — which means a brand-new drone protocol or a novel trigger can slip through unseen. The 291 AMS takes a different approach: it establishes what "normal" looks like in the operator's live electromagnetic environment and flags the anomalies that don't belong, whether or not that threat has ever been catalogued before.
Detects unknown and zero-day RF threats the moment they appear.
Stays reliable in dense, WiFi-heavy urban RF while keeping false positives low.
Proven across multiple terrains and operational environments.
Detailed detection methodology is available to qualified partners under NDA.
The 291 AMS communicates threat information through colour-coded LEDs, haptic vibration, and audio tones — so the operator never needs to look at a screen, pull out a phone, or break focus from the mission.
Three switchable alert profiles let operators adapt the device to any environment — from full audio alerts on patrol to silent vibration-only mode during covert operations. One button press to switch.
No WiFi. No Bluetooth. No cellular. The device cannot be detected, tracked, or jammed through its own RF signature — because it has none.
Full LEDs, audio tones, and vibration — maximum situational awareness
Visual and vibration only — noise-disciplined for static security
Vibration only — zero visual or audio signature for special operations
| Coverage | Wideband — sub-GHz through 6+ GHz |
| Key Bands | Sub-GHz ISM, 2.4 GHz, 5.8 GHz |
| Detection | Real-time, fully on-device |
| Emissions | Zero — completely passive |
| Threats | Drones, RCIED triggers, surveillance, zero-day RF |
| Form Factor | Body-worn, ruggedized enclosure |
| Runtime | Full operational shift on a charge |
| Power | Field-swappable battery |
| Operation | Fully standalone — no cloud, no internet |
| Alerts | LED, haptic, and audio — screen-free |
Full-disk encryption on all storage, with encrypted data export.
Compiled to native binaries — no readable source on the device.
Hardware tamper detection with automatic key wipe on enclosure breach.
Tested across four distinct operational environments to validate detection consistency
Baseline environment — minimal multipath, low RF noise floor
Dense WiFi, high multipath — shared-band rejection testing
Vegetation attenuation, signal masking, reduced line-of-sight
Heavy RF reflection, variable propagation conditions
Built for the threat landscape faced by modern defence and security operators
Body-worn on plate carriers or tactical vests. Provides continuous RF threat awareness to each member of a patrol without adding cognitive load or requiring screen interaction.
Forward operating base perimeter security. Detect incoming drone reconnaissance and RCIED staging before an attack is initiated. Multiple AMS units create distributed threat coverage.
Close protection teams can carry the AMS covertly to detect electronic surveillance, drone observation, and RCIED threats around principal movements and secure venues.
Protect government facilities, embassies, and sensitive infrastructure from unauthorized drone surveillance and electronic intrusion with persistent wearable RF monitoring.
Provides early warning of RCIED trigger transmissions during explosive ordnance disposal and route clearance operations — detecting threats before operators enter the kill zone.
Covert mode operation — vibration-only alerts with zero visual or audio signature. The system emits no RF, making it invisible to electronic surveillance and SIGINT detection.
291 Group is a wholly Canadian-owned company, founded by veterans of the Canadian Armed Forces with over a century of combined Electronic Warfare experience. The 291 AMS is designed, developed, and manufactured entirely in Canada — no foreign dependencies, no third-party cloud, no data leaving Canadian soil.
All software, firmware, and detection algorithms designed and owned by 291 Group
Built by operators who understand the threat environment firsthand
Fully standalone operation — no external servers, no internet required
