From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]:14463 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752187AbZK3UnU (ORCPT ); Mon, 30 Nov 2009 15:43:20 -0500 Message-ID: <4B142E2C.1020108@redhat.com> Date: Mon, 30 Nov 2009 18:42:20 -0200 From: Mauro Carvalho Chehab MIME-Version: 1.0 To: "OrazioPirataDelloSpazio (Lorenzo)" CC: linux-media@vger.kernel.org Subject: Re: DIY Satellite Web Radio References: <4B14195D.6000205@autistici.org> In-Reply-To: <4B14195D.6000205@autistici.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: 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.