Re: DIY Satellite Web Radio

[Mauro Carvalho Chehab <mchehab@redhat.com>]

Em 30-11-2009 17:13, OrazioPirataDelloSpazio (Lorenzo) escreveu:
> Hi all,
> I'm not a DVB expert but I'm wondering if this idea is feasible:
> For an "amateur" web radio, for what I know, it is really hard to
> being listened in cars, like people do with commercial satellite radio
> [1] . Basically this is unaffortable for private user and this is
> probably the most relevant factor that penalize web radios againt
> terrestrial one.
> 
> My question is: is there any way to use the current, cheap, satellite
> internet connections to stream some data above all the coverage of a geo
> satellite? and make the receiver handy (so without any dishes) ?

Receiving sat signals without dishes? From some trials we had on a telco
I used to work, You would need to use a network of low-orbit satellites,
carefully choosing the better frequencies and it will provide you
low bandwidth.

This will likely cost a lot of money, if you find someone providing a
service like that. One trial for such network were the Iridum
project. AFAIK, the original company bankrupted due to the very high costs of
launching and managing about a hundred satellite network.

I'm not tracking such things nowadays, but I won't doubt that you would
find someone providing this kind of services. I think the telephones that
are onboard of some flight companies use a satellite service like that.

> Probably by introducing some _very_ redundant code inside the stream
> that we upload through the modem and that the satellite will stream from
> the sky, we can get some S/N db. The patch to do at the receiver is just
> software or maybe hardware?

You'll likely need to design an special hardware for such usage.

Cheers,
Mauro.