On 11/20/05, Tracy R Reed <[EMAIL PROTECTED]> wrote:
> Paul G. Allen wrote:
>
> > Did you read my follow-up post to Mark's? You don't need a dish. You
> > don't have to "lock" onto the satellite. You don't need a sophisticated
> > system to move a dish around. You only need a transmitter of sufficient
> > power and a receiver of sufficient sensitivity.
>
> Correct me if I'm wrong but to get the kind of bandwidth he will need to
> download weather charts while at sea I think he probably will need the
> things Mark mentioned.
>
> Your dual network modems are nice but seem to only get high bandwidth
> when near a 3g cellular network which will not exist out at sea. So he
> would only be able to get a few kilobits/s of bandwidth using your
> equipment. Enough for email or simple messaging but no graphic weather
> charts or general web browsing.
Back when I was first working with seagoing computers the simple
weather charts were broadcast on a low-speed FAX channel at something
like a 2 kBaud rate. So it took half an hour to receive a chart, but
no more bandwith than low-quality voice.
carl
--
carl lowenstein marine physical lab u.c. san diego
[EMAIL PROTECTED]
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