COLUMBIA, MARYLAND--(CCNMatthews - Dec. 14, 2006) - Spectrum Signal Processing (USA) Inc., a subsidiary of Spectrum Signal Processing Inc. (TSX:SSY)(NASDAQ:SSPI), today announced that its flexComm(TM) SDR-4000 platform has been selected by the Space and Terrestrial Communications Directorate of the U.S. Army Communications-Electronics Research, Development and Engineering Center (CERDEC) for software defined radio research and development.

"Spectrum is pleased to be recognized as a leader in software defined radio technology germane to Army research and development," said Michael Farley, President of Spectrum USA. "The SDR-4000 product line has been designed for the small form-factor, rugged applications typically found in the defense sector and is also well suited for Quick Reaction Center teams with rapid deployment mandates."

The SDR-4000 is a rugged 3U CompactPCI(R) software defined radio platform that is comprised of two main hardware components: the PRO-4600 modem processing engine and the XMC-3321 dual transceiver input/output mezzanine module. RapidIO(TM) provides a high bandwidth interconnect fabric between these cards, as well as the input/output functionality to ensure the efficient use of the processing resources. Software development tools provided with this platform include Spectrum's quicComm(TM) hardware abstraction layer, which facilitates algorithm partitioning and programming, and a real-time operating system. The platform can be optimized for program specific size, weight, power consumption, cost and ruggedization requirements.

For more information on the SDR-4000, please visit www.spectrumsignal.com/products.

ABOUT THE U.S. ARMY COMMUNICATIONS-ELECTRONICS RESEARCH, DEVELOPMENT AND ENGINEERING CENTER

CERDEC is the Army's information technologies and integrated systems center. Its Command and Control Directorate; Intelligence and Information Warfare Directorate; Night Vision and Electronic Sensors Directorate; and Space and Terrestrial Communications Directorate work together to develop and integrate Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance (C4ISR) technologies that enable information dominance and decisive lethality for the networked Warfighter.

About Spectrum Signal Processing Inc.

Spectrum Signal Processing Inc. (TSX:SSY)(NASDAQ:SSPI) is a leading supplier of software defined platforms for defense electronics applications. Spectrum's products and services are optimized for Military communications, signals intelligence, surveillance, electronic warfare and satellite communications applications. Spectrum's integrated, application-ready products provide its customers with compelling time-to-market and performance advantages while mitigating program risk and cost parameters. Spectrum Signal Processing (USA) Inc., based in Columbia, MD, provides applications engineering services and modified commercial-off-the-shelf platforms to the US Government, its allies and its prime contractors. For more information on Spectrum and its flexComm product line, please visit www.spectrumsignal.com.

Forward-looking Safe Harbour Statement

This news release contains forward-looking statements related to sales of the Spectrum Signal Processing Inc. flexComm product line. These statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve risks and uncertainties, including the timely development and acceptance of Spectrum's new products, the impact of competitive products and pricing, availability of components, changing market conditions and the other risks detailed from time to time in other company filings. Actual results may differ materially from those projected. These forward-looking statements represent the company's judgment as of the date of this release and Spectrum may or may not update these forward-looking statements in the future. Readers are referred to Spectrum's assumptions and risk factors set out in the most current Form 20-F filed with the Securities and Exchange Commission and the British Columbia Securities Commission.

flexComm and quicComm are trademarks of Spectrum Signal Processing Inc. CompactPCI is a registered trademark of the PCI(TM) Industry Computers Manufacturer's Group. PCI is a trademark of the Peripheral Component Interconnect - Special Interest Group (PCI-SIG). RapidIO is a trademark of the RapidIO Trade Association. Other product and company names mentioned may be trademarks and/or registered trademarks of their respective holders.