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- W2275487486 abstract "Commercial global communications via satellite began with Intelsat in 1965, using large, fixed earth stations (~30 m in diameter) communicating with each other at C-band (6 GHz on the uplink and 4 GHz on the downlink) via spacecraft in geostationary orbit. The almost universal reach of geostationary satellites, coupled with the fact that the majority of the Earth's surface is water, made the move to offer telecommunications services to ships a logical progression. The original geostationary satellites were small and power limited, and there was clearly no way a 30-m diameter antenna could be located aboard even the largest ship. The solution reached was to offer services at L-band (between 1 and 2 GHz) rather than at C-band and to make the services narrowband (one equivalent voice channel) rather than attempting to provide broadband links." @default.
- W2275487486 created "2016-06-24" @default.
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- W2275487486 date "2011-01-01" @default.
- W2275487486 modified "2023-09-24" @default.
- W2275487486 title "Mobile satellite service propagation effects" @default.
- W2275487486 doi "https://doi.org/10.1049/pbew054e_ch6" @default.
- W2275487486 hasPublicationYear "2011" @default.
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