Benchmark developer faults P4

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Benchmark developer faults P4

Two US companies say they will spend $1 billion each to bring multi-channel digital radio to moving vehicles later this year. The services will include subscriber supported ad-free radio as well as commercial programming. Both Sirius Satellite Radio and XM Satellite Radio have paid $100 million each for satellite radio licenses and will compete, using incompatible systems, for customers. Significant technical problems, especially regarding coverage in urban areas blocked by tall structures, remain to be solved.

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