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Scott Dahlgreen wrote:
>Marcelo Pacheco,
>
>Perhaps you could elaborate on the CDPD scheme for the group.
>
>I am interested in getting data on my laptop in flight. Could I get a CDPD modem and receive data via the internet?

Can one get a CDPD modem and receive data via the internet ?
The short answer is probably yes.
CDPD uses 900 Mhz digital celullar communication, which isn't AMPS, so it
shouldn't suffer from the FCC restrictions on its use.
However, being cellular, it means there are lots of active cells in reach at
altitude, so there's a good likelyhood of overloading their system by airborne
use.
There are also potential doppler effects, at the speeds a Lancair fly, where the
doppler shift cause by our speeds can cause data transfer errors. However I read
reports from people illegally using Omnisky (same that Palm uses) successfully
from airliners at 18000ft, at which speed any jet would be doing at least
300ktas, so this might not be an issue.

Those providers give you unlimited service at a reasonable price when compared
to satellite based solutions, at the cost of restricted coverage (omnisky for
example has very large uncovered areas, specially when away from densely
populated areas, but who knows how far away we'll be able to talk at 18000ft
???).
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