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= GEO Mobile Radio = This is the homepage of the Osmocom sub-project ''GEO Mobile Radio''. It is collecting information and software related to the ETSI GEO Mobile Radio specification and its practical implementations like the [wiki:Thuraya] satellite phone network GEO Mobile Radio is a set of specifications describing a satellite based mobile phone network. == Radio aspects == It uses the L-band frequencies 1634 to 1656 MHz (earth to space) and 1532.5 to 1554.5 MHz (space to earth) for communication between mobile phones and the respective satellites. The polarization is circular (left) and the modulation is pi/4 QPSK, using a channel spacing of 31.25 kHz == Index == * [wiki:GMR_Specifications] -- An Introduction and Overview into the GMR specifications * Devices: * [wiki:Thuraya_SO2510] -- A popular handset for use in the [wiki:Thuraya] system. * [wiki:Thuraya_SG2520] -- A dual-mode GSM/ [wiki:Thuraya] handset running WindowsCE. * [wiki:Thuraya_Beams] -- Information about the Thuraya beams * [http://bit.ly/nInTOi] -- Google Maps view of the Thuraya beams that we have found so far * [wiki:OsmoGMR_Software] -- Software that we wrote for GMR analysis * [wiki:GettingStarted] -- A small guide to get you going * [wiki:Receiver_Setup] -- How to receive GMR signals coming down from a satellite
