Até final de Novembro 200 rádios em HD
só no universo do grupo Clear Channel. "The company says it is on track to air HD digital radio broadcasts on 95% of its stations in the top 100 markets by the end of 2007".
(HD digital radio upgrades AM and FM radio stations by adding a digital signal to the existing analog signal. The result allows AM radio to sound like FM, and FM radio to sound CD-quality. To enjoy these benefits plus additional programs that can be broadcast through a single station via multicasting, the listener must purchase a HD radio receiver)
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