GPS receiver manufacturers design GPS receivers to use spectrum beyond the GPS-allocated band.
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Additionally, international broadcasters sometimes operate outside the normal WRC-allocated bands or use off-channel frequencies.
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For one thing, the designers must ensure that their satellites do not transmit outside their allocated bands.
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National governments currently allocate bands of spectrum ( sometimes based on guidelines from the decentralized : there are no license payments or central control for users.
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As the hearing ended, Tauzin said the broadcasters " run the risk of Congress claiming the ( digital ) spectrum back " if they sought to market the allocated band for subscription services " and not show the American public HDTV ."
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