Deployable technology to detect, identify and geolocate signals in complex RF environments

At CRFS, we design, build, program and deploy systems and solutions for RF spectrum monitoring, management and geolocation. We serve both defense and homeland security customers as well as the civilian regulatory market.

We believe that the best hardware, software and know-how contributes to our customers’ success. And with that philosophy in mind we have developed some of the most advanced RF sensors available.  Our sensors are high performing, compact, rugged and modular, coupled with intuitive software that can turn RF data into actionable intelligence.

It’s not just the products that are high performing – it’s also the people: developers, engineers and scientists with experience within the military, regulatory and research sectors. They understand the challenges facing our customers and work with them to deliver uncompromising solutions.

Typical challenges faced by our customers include:

  • Management of spectrum critical sites

  • Malicious or accidental interference

  • Unauthorized use of licensed spectrum

  • Frequency jamming

  • Bugging or compromise of secure facilities

  • Border and perimeter monitoring

  • EM situational awareness

  • Major events planning and management

How we work with you

We don’t just provide hardware and software; we are part of the solution. We can work with you to determine, build and deploy the system that meets your specific needs and those of your customers. We have long-term partnerships with many of our customers, working closely with them not just to ensure successful deployment of equipment, but also to develop the specific features and functionality they require.

We provide:

  • An open architecture
  • Proven, reliable hardware and software
  • Comprehensive documentation
  • Expert support
  • Transparency

All of which leads to a smooth integration and a successful project. We are responsive, agile and collaborative.



“The design, manufacture and supply of RF spectrum monitoring equipment”

Get in touch

Speak to one of our industry specialists

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Leadership team


Alistair co-founded CRFS in 2007. Alistair is a serial entrepreneur and previously co-founded radio telecoms company Adaptive Broadband Limited in 1997; it was sold to California Microwave (now Adaptive Broadband Corporation) in 1998. Alistair then co-founded Cambridge Broadband Limited in 2000. Alistair has a PhD in telecommunications engineering from British Telecom Research laboratories and is a member of the Institute of Engineering Technology.


Nick leads the CRFS team. Prior to CRFS, Nick was COO at Xennia, which he helped propel into a leading industrial inkjet company. It was subsequently acquired by TenCate Plc in 2008. Prior to Xennia, Nick held senior management positions in the chemical industry at ICI and Ineos. He is an active angel investor and mentor. Nick has a BA from Oxford and an MA from Yale.


Marty leads the US team based in Virginia. He has many years of experience in Electronic Warfare, Signals Intelligence (SIGINT) and Unmanned Air Systems (UAS), with previous leadership roles at X-COM Systems, Trident Systems and Orbital Sciences Corporation. Marty has a MSc in Management and a BS in Engineering.