Globalstar, Inc manages a Low Earth Orbit (LEO) satellite system which supplies phone and data services. Because of the nature of the system (no satellite to satellite communication), its coverage is generally limited to land and adjacent waters. Due to difficulties with its satellites, phone coverage has been limited. Data service is ‘simplex’ (one way) only in the existing satellite constellation. A new generation of satellites is due to come on line over the coming years. Globalstar provides the satellite service to SPOT LLC, the marketer of Spot Satellite Messengers.

Globalstar Corporate website

2011.07.14 Press Release Global Star announces successful second launch of six new satellites