[vdr] Re: vdr 1.1.13 with QAM128 channels

[Gavin Hamill <gdh@acentral.co.uk>]

On Mon, Oct 28, 2002 at 05:23:59PM +0200, Perttu Laurila wrote:
> Hi,
> does VDR 1.1.13 support tuning to QAM128 multiplexes
> based on information in channels.conf?
> 
> If yes, is this a correct syntax for a QAM128 channel in
> channels.conf
> 
> MTV3 D:426:M128:C:6900:305:561:817:1:49

I had trouble getting the parameters to be recognised in vdr 1.1.13 for 
my terrestrial setup - the solution was to specify /every/ parameter not 
just the QAM value, so I ended up with a string like 

BBC ONE (TV):754166:I0C34D0M16B8T2G32Y0:T:27500:600:601:0:0:4168

And that works OK :)

> P.S. I was having huge trouble tuning to QAM 128 channels with
> even dvbtune and had lots of errors in the picture until I turned off
> the other computer next to my vdr box, apparently QAM 128 is a lot
> more sensitive to noise.

Yes, I don't understand the techicalities of it, but a higher QAM packs 
the data more densely into the same space, so it will be affected by 
noise more easily.

gdh


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