WALTHAM, Mass., March 1, 2006 -- Defense contractor Raytheon Co. has been awarded a $35.9 million US Navy contract to deliver 15 submarine high data rate (sub HDR) multiband satellite communication systems to provide submarines with high bandwidth communications at periscope depth. Sub HDR technology, developed by Waltham-based Raytheon in the 1990s, links submarines to the Global Broadcast Service, the Milstar satellite constellation and the Defense Satellite Communication System. It enables sailors to transmit and receive mission-critical information by raising a mast just above the sea's surface while the ship is submerged at periscope depth. The system transmits secure wideband multimedia, secure and non-secure Internet access, voice and data traffic, imagery and video teleconferencing. Raytheon has delivered more than 71 sub HDR systems to the Navy during the last six years under previous contracts totaling more than $160 million. For more information, visit: www.raytheon.com