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Radio: Satellite Radio
built 169 days ago
In February, C-SPAN was informed by SIRIUS Satellite Radio that C-SPAN Radio will no longer be part of their programming line-up. Although we were a charter programming service with SIRIUS since its launch, we were unable to reach agreement with them for a new contract because they demanded rights for extensive pre-emption of our channel in order to carry sports programming, which we contend affects the integrity of our public affairs event coverage.
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In addition to co-founding XM Satellite Radio, Mr. Levin played an integral role in the formation and development of other media, satellite and wireless companies, including Mobile Satellite Ventures, XM Canada, Motient, Terrestar Networks and American Mobile Satellite Corporation. He ... has been a U.S. delegate to numerous International Telecommunication Union conferences.
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The mobile HD Radio tuner works with most Sony head units to provide additional support for digital music habits. Many of Sony's car stereos come with front aux-in and USB inputs, play MP3 CDs and are iPod(R) and satellite radio-ready. For a complete list of compatible Sony products, please visit http://www.sony.com/xplod .
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Most new radio systems are digital, see ...: Digital TV, Satellite Radio, Digital Audio Broadcasting. The oldest form of digital broadcast was spark gap telegraphy, used by pioneers such as Marconi. By pressing the key, the operator could send messages in Morse code by energizing a rotating commutating spark gap. The rotating commutator produced a tone in the receiver, where a simple spark gap would produce a hiss, indistinguishable from static. Spark gap transmitters are now illegal, because their transmissions span several hundred megahertz. This is very wasteful of both radio frequencies and power.
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