CRFS Limited

CRFS Limited, founded in 2007 and now part of Motorola, is a UK-based company specializing in the development of deployable systems for detecting, identifying, and geolocating radio frequency (RF) signals. Their core offering is the RFeye platform, a suite of hardware and software designed for comprehensive spectrum monitoring up to 40 GHz. CRFS provides a range of RF sensors – including fixed, mobile, and vehicle-integrated options – alongside software tools for signal capture, analysis, geolocation, and reporting.

The company’s technology focuses on passive RF sensing, utilizing techniques like Time Difference of Arrival (TDoA) and direction finding to provide situational awareness across multiple domains – air, land, sea, spaceport, and cyber. CRFS serves a diverse customer base including military and electronic warfare operators, spectrum regulators, security and intelligence agencies, and defense system integrators. Applications span military spectrum dominance, border security, critical infrastructure protection, air defense, drone detection, and RF intelligence gathering. CRFS positions itself as a provider of advanced Commercial-Off-The-Shelf (COTS) RF technology, enabling customers to enhance their RF capabilities and achieve spectrum superiority in complex electromagnetic environments.