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Communications Technology Laboratory

Delivering Public Safety

CTL promotes the development and deployment of advanced communications technologies through the dissemination of high-quality measurements, data, and research supporting U.S. innovation, industrial competitiveness, and public safety.  

5G Coexistence Testbed for Today’s Challenges and Tomorrow’s Opportunities

The resiliency of the American workforce depends on trusted communications systems now, more than ever...

CTL Demo Adds Key Capability to Atom-Based Radio Communications 

This gets us one step closer to a true atom-based communication system to benefit 5G and Beyond...

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Low-Cost NIST Demo Links Public Safety Radios to Broadband Wireless Network

Software shows how first responders might easily take advantage of broadband technology...

Our Focus Areas


5G & Beyond
Fundamental Metrology
Spectrum Testing
Public Safety Communications



News and Updates


Projects and Programs

Citizens Broadband Radio Service

The Citizens Broadband Radio Service (CBRS) band is 150 MHz of new spectrum made available for commercial broadband use on a shared basis with the federal

Industry Impacts

Alliance for 5G Networks

The next generation of wireless communications technology will allow many more devices to send information much faster, making possible everything from virtual

First Responder Communications

First responders must be able to communicate during an emergency. Too often in critical situations, communications among public safety agencies are hampered by

Tools and Instruments

LTE Coverage Tool

This experimental application was developed by the National Institute of Standards and Technology (NIST) Public Safety Communications Research Division (PSCR)



Director, Communications Technology Lab and Director, NIST Boulder Laboratory