GPS Receivers utilize proprietary ASIC.

Press Release Summary:

With ability to simultaneously employ multiple front ends, Crescent(TM) GPS integrated circuit board receivers can achieve update rates as high as 20 Hz. Coast(TM) software enables receivers to utilize old differential GPS correction data for 40 min or more without significantly affecting accuracy of positioning. Optional e-Dif® and L-Dif® software enable differential-quality and decimeter-level positioning accuracies, respectively.

Original Press Release:

CSI's Hemisphere GPS Develops Chipset and New Crescent(TM) Receiver Technology

Proprietary ASIC technology enhances GPS product performance and versatility

CALGARY, Alberta -- May 25, 2005 - (TSX:CSY): Hemisphere GPS, a designer and manufacturer of GPS products used in more than 50 countries, today announced the introduction of its own application-specific integrated circuit (ASIC) chipset technology. The Hemisphere ASIC will play a key role in a receiver product line that Hemisphere GPS is launching under its new Crescent(TM) brand name.

After years of development by Hemisphere GPS, which is wholly owned by CSI Wireless Inc., the Hemisphere chipset will enable Crescent receivers to establish a new industry benchmark for GPS performance, versatility and value.

Crescent receivers will deliver higher update rates, noise-reduced raw measurements, more memory and higher processor capability, to enable more advanced applications and sophisticated configurations.

Crescent receivers will also be able to simultaneously employ multiple front ends - enabling tighter coupling of measurements from separate antennae for use with heading-based products. Users will obtain excellent accuracy and stability, due to Crescent's more accurate code phase measurements, multipath mitigation improvements, and fewer discrete receiver components.

The first Crescent receiver to employ the Hemisphere ASIC is the new Crescent OEM module - an integrated circuit board receiver. It will also enhance Hemisphere's house-brand product lines - Outback(R), Satloc(R) and CSI - and be available to OEMs and integrators for use in their product lines.

Crescent technology is the front-end component in a variety of high-performance innovations that Hemisphere GPS is developing for several increasingly popular applications including agricultural guidance and machine control, marine navigation and GIS & mapping. The technology can achieve update rates of as much as 20 Hz - making it ideal for these applications.

"By developing our own ASIC technology, we have eliminated the limitations imposed by using off-the-shelf chipsets, and positioned ourselves to offer customers a wider variety of products with improved performance and expanded functionality," said Rick Heiniger, President of Hemisphere GPS.

Crescent(TM) receivers feature:

- Hemisphere's exclusive Coast(TM) software that enables receivers to utilize old Differential GPS (DGPS) correction data for 40 minutes or more without significantly affecting the accuracy of positioning - a big advantage during temporary signal blockages or outages

- Optional e-Dif(R) software available exclusively from Hemisphere that enables receivers to achieve Differential-quality positioning accuracies without needing an external DGPS signal - ideal for regions where Differential broadcasts are not available, or available only by subscription

- Optional L-Dif(R) software available exclusively from Hemisphere that enables decimeter-level positioning accuracies anywhere in the world - ideal for Precision Agriculture.

- Low power consumption - ideal for mobile and battery-powered applications

- Outstanding performance in Differential GPS environments

- Small size for versatile integration

"The successful in-house development of our own proprietary chipset is an important milestone on Hemisphere's technology roadmap, and it has laid important groundwork for future technology milestones," said Stephen Verhoeff, President and CEO of CSI Wireless. "Crescent receiver technology is also a significant addition to our intellectual property portfolio - one that will enable us to achieve production cost savings and improve profit margins."

About Hemisphere GPS

Hemisphere GPS is the world's largest after-market supplier of GPS products for use in Agricultural Guidance, and a global player in other rapidly growing GPS-aided sectors including Marine Guidance and GIS & Mapping. Owned by CSI Wireless Inc., Hemisphere's major house brands are Outback, Satloc, CSI and now Crescent. Hemisphere is a leader in the design and development of GPS and Differential GPS technology. Its products have been repeatedly lauded for innovation. For example, Hemisphere's Outback S guidance system has been cited by the American Society of Agricultural Engineers as an "outstanding innovation" that saves "producers time, costs and labor while improving user safety."

About CSI Wireless

CSI Wireless designs and manufactures innovative, cost-effective, wireless and GPS products for mobile and fixed applications in the agriculture, marine, automotive and other industries. CSI, through its Hemisphere GPS and its Wireless divisions, is a leader in several high-growth markets including Agricultural Guidance, Telematics and Desktop Cellular Telephones. It owns numerous patents and intellectual property. CSI's common shares trade on The Toronto Stock Exchange under the trading symbol "CSY", with approximately 42.7 million outstanding. Its head offices are in Calgary, Alberta, and it has major product development, sales and marketing facilities in California's Silicon Valley, Arizona and Kansas. For more information about CSI, go to

For further information: please contact:

- Stephen Verhoeff, President & CEO, CSI Wireless Inc., (403) 259-3311;

- Rick Heiniger, President, Hemisphere GPS, 1-816-505-4310,;

- Jeff Adams, Public Relations Manager, CSI Wireless Inc., (403) 259-3311 No. 254, jadams

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