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Canadian-Made Defence Technology
AUTONOMOUS MONITORING SYSTEM

291 AMS Wearable RF Threat Detection

A body-worn, passive RF threat detection system with no transmitter. Demonstrated in field trials against drones and push-to-talk radios, and designed to catch RCIED triggers, surveillance devices and other unknown RF threats, with no prior signature knowledge.

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Exports subject to Canadian export controls.

291 AMS — Autonomous Monitoring System ruggedized unit

This is the actual 291 AMS device, not a render.

Wideband
Sub-GHz to 7+ GHz
Passive
Receive-Only
Real-Time
Threat Alerts
Zero-Day
Signature-Free
Full-Shift
With Battery Swaps
Platform Overview

What is the 291 AMS?

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.

Design Philosophy

"Completely standalone. No transmitter. No phone, no app, no wireless. Just immediate, covert threat awareness on the operator's body."

Why 291 AMS?

  • Proven against drones and push-to-talk radios; built to catch RCIED triggers, surveillance devices and unknown RF threats
  • No transmitter: nothing to find through its own signal
  • No phone dependency — operates entirely on-device
  • Physics-based zero-day threat detection
  • Body-worn with tactile and visual alert modes
  • Built by veterans who have done the job
Threat Detection

Multi-Domain RF Threat Coverage

Autonomous detection across the full spectrum of modern RF threats

Drone Detection

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.

  • • Commercial UAS control links
  • • FPV racing / attack drones
  • • Unknown / zero-day drone protocols
  • • WiFi-based drones

RCIED Trigger Detection

Designed to flag remote-controlled IED trigger transmissions in the sub-GHz and ISM bands, for early warning before a detonation command is received.

  • • Sub-GHz ISM band monitoring
  • • Low-power control protocols
  • • TX burst and anomaly detection
  • • Zero-day trigger identification

Surveillance Device Detection

Designed to flag covert surveillance transmitters, hidden cameras with wireless uplinks, and anomalous RF activity that points to eavesdropping.

  • • Covert audio/video transmitters
  • • Cellular anomaly detection
  • • Push-to-talk radio identification
  • • ISM band reconnaissance

Zero-Day RF Threat Detection

A physics-based detection approach identifies threats through anomaly analysis — no prior signature knowledge required. Catches threats that signature-based systems miss entirely.

  • • Signature-free detection
  • • Catches never-before-seen signals
  • • Effective in RF-dense environments
  • • Continuously self-calibrating
Detection Approach

Physics-Based, Signature-Free

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.

No signatures required

Detects unknown and zero-day RF threats the moment they appear.

Environment-adaptive

Learns what normal looks like wherever it is worn, and is built to keep false positives low.

Field-proven

Proven against live drones and push-to-talk radios in real-world conditions, from open ground to dense urban RF.

Detailed detection methodology is available to qualified partners under NDA.

Operator Interface

Eyes Forward, Hands Free

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.

Zero Wireless Emissions

No WiFi. No Bluetooth. No cellular. The device has no transmitter, so there is nothing to find, track, or home in on through its own signal.

Patrol Mode

Full LEDs, audio tones, and vibration — maximum situational awareness

Base Mode

Visual and vibration only — noise-disciplined for static security

Covert Mode

Vibration only — zero visual or audio signature for special operations

Red
Drone threat
Magenta
RCIED trigger
Yellow
Radio / PTT
Purple
Unknown threat
Green
System normal
POWER
System on/off
MODE
Cycle profiles (Patrol / Base / Covert)
SILENCE
Acknowledge / mute active alert
Platform Capabilities

Built for the Field

RF & Detection

CoverageWideband, sub-GHz through 7+ GHz
Key BandsSub-GHz ISM, 2.4 GHz, 5.8 GHz
DetectionReal-time, fully on-device
EmissionsZero — completely passive
ThreatsDrones, push-to-talk radios, RCIED triggers, surveillance devices, zero-day RF

Platform & Power

Form FactorBody-worn, ruggedized enclosure
RuntimeFull shift with battery swaps
PowerField-swappable battery
OperationFully standalone — no cloud, no internet
AlertsLED, haptic, and audio — screen-free

Security & IP Protection

Encrypted Storage

Full-disk encryption on all storage, with encrypted data export.

Protected Code

Compiled to native binaries — no readable source on the device.

Tamper Protection

Hardware tamper detection with automatic key wipe on enclosure breach.

Field Validation

Terrain-Validated Performance

Tested across four distinct operational environments to validate detection consistency

🏞

Open Field

Baseline environment — minimal multipath, low RF noise floor

🏙

Urban

Dense WiFi, high multipath, crowded shared bands

🌲

Forest

Vegetation attenuation, signal masking, reduced line-of-sight

🌊

Shoreline

Heavy RF reflection, variable propagation conditions

Operational Contexts

Where the 291 AMS Operates

Built for the threat landscape faced by modern defence and security operators

Dismounted Patrol

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.

Force Protection

Forward operating base perimeter security. Designed to warn of drone reconnaissance and RCIED activity before an attack is initiated. Multiple AMS units create distributed threat coverage.

VIP Protection

Close protection teams can carry the AMS covertly around principal movements and secure venues, for warning of drone observation and, by design, electronic surveillance and RCIED threats.

Critical Infrastructure

Protect government facilities, embassies, and sensitive infrastructure from unauthorized drone surveillance and electronic intrusion with persistent wearable RF monitoring.

EOD / Route Clearance

Designed to give early warning of RCIED trigger transmissions during explosive ordnance disposal and route clearance, before operators enter the kill zone.

Special Operations

Covert mode operation — vibration-only alerts with zero visual or audio signature. The device has no transmitter, so there is nothing for electronic surveillance or SIGINT to find through its own signal.

Canadian Sovereignty

Designed, Built, and Owned in Canada

291 Group is a wholly Canadian-owned company, founded by veterans who have done this work in the field. The 291 AMS is designed and developed by 291 Group and manufactured in Canada, with no foreign cloud or software dependencies and no data leaving Canadian soil.

100% Canadian IP

All software, firmware, and detection algorithms designed and owned by 291 Group

Veteran Founded

Built by operators who understand the threat environment firsthand

No Cloud Dependency

Fully standalone operation — no external servers, no internet required

Ready to Discuss the 291 AMS?

Contact 291 Group for a technical briefing, a demonstration, or to discuss integration with your current force protection and counter-drone programs. Full technical detail is available to qualified partners under NDA.

Request a Briefing