[linux-dvb] Re: development for DVB-c cards?

[Johannes Stezenbach <js@linuxtv.org>]

Gerhard Steiner wrote:
> I know, this has been asked some times in the past.
> But since I have to use a DVB-c card, I am wondering if there is any further
> development in this direction.
> It seams (at least for me), that all the development is concentrating on SAT
> (most of the people are using it).
> 
> I am using the driver from 2003-11-08 and sometimes there are more or less
> heavy distortions (especially with QAM256) and some channels do not work at
> all, but the system is up and running.
> - Would it make sence it upgrade to a newer version?
> - Has there been any improvement in this area?
> - Is it worth to make an update?
> - Does an upgrade of the memory maybe help to get better picture quality?

I don't know the answer to your questions, but QAM256 (and to some degree
QAM128) is problematic because it requires a very good signal to noise
ratio. Here in Berlin they didn't even try to use that because the
cable network is of lower quality (we have QAM64).

It is still possible that the drivers could be improved but it would
require a developer with access to QAM256 signals...

Johannes