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laforge, 02/19/2016 10:50 PM
link slides + video of Sylvain's talk

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= GEO Mobile Radio =
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This is the homepage of the Osmocom sub-project ''GEO Mobile Radio''.
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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
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GEO Mobile Radio is a set of specifications describing a satellite based mobile phone network.
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== Radio aspects ==
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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
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between mobile phones and the respective satellites.  The polarization is circular (left) and the modulation is pi/4 QPSK, using
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a channel spacing of 31.25 kHz
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== Index ==
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 * [wiki:GMR_Specifications] -- An Introduction and Overview into the GMR specifications
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 * Devices:
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  * [wiki:Thuraya_SO2510] -- A popular handset for use in the [wiki:Thuraya] system.
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  * [wiki:Thuraya_SG2520] -- A dual-mode GSM/ [wiki:Thuraya] handset running WindowsCE.
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 * [wiki:Thuraya_Beams] -- Information about the Thuraya beams
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  * [http://bit.ly/nInTOi] -- Google Maps view of the Thuraya beams that we have found so far
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 * [wiki:OsmoGMR_Software] -- Software that we wrote for GMR analysis
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  * [wiki:GettingStarted] -- A small guide to get you going
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  * [http://cgit.osmocom.org/cgit/osmo-gmr/ Browse code] -- Browse the OsmocomGMR source code
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 * [wiki:Receiver_Setup] -- How to receive GMR signals coming down from a satellite
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== Presentations ==
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 * 28C3 talk by Sylvain
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  * Video: http://mirror.fem-net.de/CCC/28C3/mp4-h264-HQ/28c3-4688-en-introducing_osmo_gmr_h264.mp4
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  * Slides: http://events.ccc.de/congress/2011/Fahrplan/attachments/2027_28c3_introducing_osmocom_gmr.pdf
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