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I don't have any particular source of information, just years of idle interest in the technology.

If you are interested in Wireless WAN technologies, feel free to inspect this treasure trove of links: http://hydra.carleton.ca/info/wlan_links.html . And, although it's a bit dated, I found this paper (http://dcs.umd.edu/telecom/library/paper.html#_Toc414083577) which has a concise overview of the various technologies involved, including satellite based techs.

The key aspect missing from what is already in place is the "roaming" ability of the client receivers, which would allow your laptop to automatically tap into the WWAN of whichever city you happen to be in. This is a solvable problem, especially considering that cell phones do it all of the time. There is a Wireless LAN Interoperability Forum (WLIF at http://www.wlif.org) that is supposed to be addressing some of these issues, but their web site seems to be MIA.

Mojotoad

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