Satellite phone

Satellite phone

A wireless phone that uses mobile satellite service to send voice and data. (Cingular)

Ericsson launched satellite phones in 1999. They operate both on either GSM/AMPs networks, and via satellite, in areas where there is no coverage. (Ericsson)

A satellite telephone, satellite phone, or satphone is a mobile phone that communicates directly with orbiting communications satellites. Depending on the architecture of a particular system, coverage may include the entire Earth, or only specific regions.
Satellite phone (Inmarsat)
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Satellite phone (Inmarsat)

The mobile equipment, also known as a terminal or earth station, varies widely. A satellite phone handset has a size and weight comparable to that of a late 1980s or early 1990s cell phone, but with a large retractable antenna. These are popular on expeditions into remote areas where terrestrial cellular service is unavailable.

A fixed installation, such as used shipboard, may include large, rugged, rack-mounted electronics, and a steerable microwave antenna on the mast that automatically tracks the overhead satellites.

Geostationary services