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As television became the main market, its demand for simultaneous delivery of relatively few signals of large bandwidth, the difference between the upper and lower frequencies in a contiguous set of frequencies, to many receivers being a more precise match for the capabilities of geosynchronous communication satellites. Two satellite types are used for North American television and radio: Direct Broadcast Satellite (DBS), a term used to refer to satellite TV broadcasts intended for home reception;, and Fixed Service Satellite (FSS). Both of the satellites definition outside of North America, especially in Europe, are a bit more vague. Usually, the satellites used for direct-to-home TV in Europe have the same high power output as DBS-class satellites in North America, but use the same linear polarization as FSS-class satellites. Examples of these are: the SES Astra SA, a corporate subsidiary of SES, based in Betzdorf, in eastern Luxembourg, that maintained and operated the Astra series of geostationary communication satellites between 2001 and 2011; Eutelsat SA, a French-based satellite provider; and Hot Bird space craft, the name of a popular family of satellites operated by Eutelsat, located at 13°E over the Equator (orbital position) and with a transmitting footprint over Europe, North Africa and the Middle East. Because of this, the terms FSS and DBS are more so used throughout the North American continent, and are uncommon in Europe.
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