OTTAWA, ONTARIO -- (MARKET WIRE) -- 04/11/07 -- Spectrum Signal Processing Inc. (TSX: SSY)(NASDAQ: SSPI) today announced at the CANSEC 2007 tradeshow the availability of its flexComm(TM) Sensor Data Link Modem System (SDLMS) designed for the protection and monitoring of littoral waters. The commercial-off-the-shelf SDLMS consists of two subsystems; a software defined radio (SDR) modem transceiver subsystem for the shipborne radio gateway and one or more remote sensor modem transceiver subsystems for the sensor radios. These radios are designed for rugged, low power, space-constrained deployments, such as in a buoy connected to a hydrophone array, in an unmanned underwater vehicle (UUV), an unmanned surface vehicle (USV) or an unmanned aerial vehicle (UAV).

The SDLMS is designed to provide continuous coverage over vast ocean areas for extended periods in order to detect quiet nuclear submarines, diesel-electric submarines running on batteries, ships exiting or entering port and mine-laying operations. Spectrum's integrated solution is architected to meet the processing and bandwidth requirements of today's most common data link waveforms, including STANAG 7085, T-CDL, Wideband Networking Waveform (WNW) and 802.16 (WiMAX).

"Spectrum's Sensor Data Link Modem System offers a complete end-to-end solution that is available off-the-shelf for customers looking to deploy littoral surveillance systems quickly," said Mark Briggs, Vice President, Marketing at Spectrum Signal Processing. "The SDLMS utilizes a common architecture between the shipborne and remote subsystems that is designed to reduce program development schedule, training costs and long term support burdens. By using a common hardware architecture and software stack, the SDLMS allows customers to reuse program code between the sensor and shipborne application." Mr. Briggs adds, "Under the Modified COTS process, Spectrum's application engineers can work with customers to modify the SDLMS to meet specific deployment requirements, freeing the customers' in-house resources to focus on deployment-critical functionality."

Shipborne Transceiver Subsystem

The SDLMS shipborne transceiver subsystem consists of 8 channels of IF input and output utilizing software reconfigurable processor technology such as field-programmable gate arrays (FPGA), digital signal processors (DSP) and general purpose processors (GPP). The system incorporates industry-standard digital and serial interfaces to external RF/IF subsystems. System software data flow examples demonstrating representative application data flows are provided as part of the overall package, along with a suite of built-in-test (BIT) software libraries. The base transceiver subsystem is packaged in a rugged, EMI tight rack-mounted 9U chassis that is ready for deployment in a shipborne environment.

Remote Transceiver Subsystem

The remote transceiver subsystem of the SDLMS is packaged in a small 3U CompactPCI® form-factor that is conduction-cooled and ready for integration into your remote sensor package. The remote transceiver subsystem features a processor architecture that is virtually identical to the base transceiver architecture consisting of software reconfigurable processor technology combined into an integrated package that is size, weight and power optimized for deployment in harsh environments and where power is limited.

The SDLMS has already begun shipping and is available for order immediately.

For more information on the Sensor Data Link Modem System, please visit www.spectrumsignal.com/products.

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

Contacts:
Spectrum Signal Processing Inc.
Mark Briggs
Vice President, Marketing
(604) 676-6743
Email: mark_briggs@spectrumsignal.com

Spectrum Signal Processing Inc.
Brent Flichel
President and Chief Executive Officer
(604) 676-6733
Email: brent_flichel@spectrumsignal.com
Website: www.spectrumsignal.com