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Digital audio radio service (DARS) is any type of digital radio program service.In the United States it is the official FCC term for digital radio services.. The most popular type of DARS in the U.S. and Canada is SDARS (Satellite Digital Audio Radio Service), used by Sirius Satellite Radio and XM Satellite Radio.
Sirius Satellite Radio Inc. was a satellite radio and online radio service operating in North America, owned by Sirius XM Holdings. Headquartered in New York City, with smaller studios in Los Angeles and Memphis , Sirius was officially launched on July 1, 2002.
Satellite radio uses the 2.3 GHz S band in North America for nationwide digital radio broadcasting. [6] MobaHO! operated at 2.6 GHz. In other parts of the world, satellite radio uses part of the 1.4 GHz L band allocated for DAB. [7] Satellite radio subscribers purchase a receiver and pay a monthly subscription fee to listen to programming.
It can have some of the highest gains of any antenna type, up to 60 dBi, but the dish must be large compared to a wavelength. Used for radar antennas, point-to-point data links, satellite communication, and radio telescopes. Horn A horn antenna has a flaring metal horn attached to a waveguide.
The U.S. Federal Communications Commission (FCC) approved the merger of XM Satellite Radio and Sirius Satellite Radio, Inc. on July 29, 2008, 17 months after the companies first proposed it. [4] The merger created a company with 18.5 million subscribers, [4] and the deal was valued at US$3.3 billion, not including debt. [5]
Another is Sirius Satellite Radio, which covers all of North America, including sparsely-populated rural areas and near-empty deserts. Although vendors are beginning [ citation needed ] to make arrangements with information systems such as CARS, operated by state police and state departments of transportation, coverage is likely to remain ...