24 September 2008

Nimiq 4 Communication Enabled by MDA Antennas

Montréal, QC. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions is pleased to have contributed to the Nimiq 4 spacecraft. MDA's Montreal operation supplied all the antennas onboard the satellite. These antennas provide 32 channels in Ku-band and 8channels in Ka-band. All communication between the satellite and the earth is carried out using these antennas. The equipment was designed, manufactured and tested using MDA's expertise and state-of-the-art facilities.

Nimiq 4 is a Canadian geostationary telecommunication satellite that will be used for direct-to-home satellite televisions, specialty channels and foreign language programming.

MDA is very delighted to have participated and made a substantial contribution to the Canadian commercial space industry.

MDA provides advanced information solutions that capture and process vast amounts of data, produce essential information, and improve the decision making and operational performance of business and government organizations worldwide.

Focused on markets and customers with strong repeat business potential, MDA delivers a broad spectrum of earth and space based information solutions, ranging from complex operational systems, to tailored information services, to electronic information products.

MDA employs more than 3,300 people in locations across the United States, the United Kingdom, and Canada. The Company's common shares trade on the Toronto Stock Exchange under the symbol TSX: MDA.

Related Websites:
www.mdacorporation.com