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A satellite telephone, satellite phone or satphone is a type of mobile phone that connects to other phones or the telephone network by radio link through satellites orbiting the Earth instead of terrestrial celgl sites, as cellphones do. Therefore, they can work in most geographic locations on the Earth's surface, as long as open sky and the ...
AST SpaceMobile made history in April 2023 by completing the first two-way phone call via space on an unmodified cell phone. This milestone was achieved using its low Earth orbit satellite, Blue ...
Iridium service was restarted in 2001, by the newly founded Iridium Satellite LLC, which was owned by a group of private investors. [12] On February 10, 2009, the Iridium 33 satellite collided with a defunct Russian satellite, named Kosmos 2251, 800 kilometres (500 mi) over Siberia. [19] Two large debris clouds were created. [20]
Most commercial voice and some data mobile satellite services are provided by systems operating in the L-band by Iridium, Inmarsat, Globalstar and Thuraya.The L-band spectrum allocated for MSS is between 1.5 and 2.5 GHz, with the upper portion often referred to as the S-band.
Globalstar, Inc. is an American telecommunications company that operates a satellite constellation in low Earth orbit (LEO) for satellite phone, low-speed data transmission and earth observation. The Globalstar second-generation constellation consists of 25 satellites.
EchoStar Mobile Limited was established in 2008 as Solaris Mobile, a joint venture company between SES and Eutelsat Communications to develop and commercialize the first geostationary satellite systems in Europe for broadcasting video, radio and data to in-vehicle receivers and to mobile devices, [1] such as mobile phones, portable media players and PDAs.
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