[linux-dvb] Re: Sat-Internet Provider Choice

[Matthias Weingart <matthias@pentax.boerde.de>]

On Fri, Jan 25, 2002 at 12:22:33PM +0100, christoph.rieder@web.de wrote:
> Matthias Weingart <matthias@pentax.boerde.de> schrieb am 23.01.02:
> > On Wed, Jan 23, 2002 at 08:09:25PM +0200, Mihai Amariutei wrote:
> > > The sad reality is that is no such thing as cheap fast Internet via
> > > Satellite, simply because sats are much too expensive.
> > > Do the math yourself:
> > > 1 sat costs about 800 millions USD
> > > It can be used for about 6 years
> > > It carry a couple of dozens transponders, capable of say 40 Mbps each.
> > > 
> > > It works out for a bandwith price of about 3000 USD/Mbps/month, about ten
> > 
> > Hey, good guess :-)
> > real life data: 5500USD for a  512kbit/s MPEG2 stream (www.planetc.com
> > used this for a sat newsfeed, but they capitulate recently, because of
> > the costs)
> 
> I thought that the idea behind internet via sat is to use the "excess"
> bandwith of DVB channels (somewhat same idea as videotext). This would
> limit the average bandwith to some hundered kbit/s (raw guess) but is
> essentially free. An the other possibility is (and EON seems to
> concentrate on this) multicasting. So if somebody wants to download
> <popular software package> make her/him wait until some 100 others have
> registered for the same file and then multicast it to them. therefore they
> share the cost of a transponder.

One good multicast usage of the satellites would be news traffic - but
unfortunately the quite cheap planetc.com is gone and other alternatives are
much too expensive. (I mean the usenet news, aprox 30G/day for all.all or
1G/day with no binary groups)

        Matthias


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