[linux-dvb] DST & Twinhan-Card

["Stefan Schenk" <steffx@pfroen.de>]

This might be also of interest for the list

I was playing around with the values Jamie was talking about ...
without success.
There must be some other differences between DVB-T in Australia and
Germany ....

Stefan

-----Ursprüngliche Nachricht-----
Von: Jamie Honan [mailto:jhonan@optushome.com.au] 
Gesendet: Sonntag, 14. November 2004 23:38
An: Stefan Schenk
Betreff: Re: DST & Twinhan-Card


On Sun, Nov 14, 2004 at 12:14:37PM +0100, Stefan Schenk wrote:
> Hello Jamie,
> 
> 
>    as i saw on the dvb-mailing-list you did a lot of great work, 
> making the Twinhan-cards working under linux. I have a very strange 
> problem here. I use a DVB-T card from the german company HAMA which is

> said to be a 100% clone of Twinhans VisionDTV. I can load the drivers 
> and everything looks perfect. The problem is, that i get a very bad 
> signal in (vdr's femon-plugin shows someting between 15% and 30%) and 
> therefore the picture is very very bad.
> When i start the card with the same antenna in the same room under
> windows i get a full signal and a perfect picture.
> 
> Do you have any idee whats wrong with my system or my card ?
> 
> Thanks a lot

Hmm. Everything looks good as far as module loading goes.

I guess there's a lot more undocumented registers etc.

One thing you could try, the guy who got it going was in Australia,
which has 7Mhz bandwidth. You are either 8 or 6. Most apps try
BANDWIDTH_AUTO, which I notice sets 7 MHz.

You could try playing round with this in the code.
I haven't a copy of the latest versions but look for code
like this:

                case BANDWIDTH_6_MHZ:
                        val[6] = 6;
                        break;
 

                case BANDWIDTH_7_MHZ:
                case BANDWIDTH_AUTO:
                        val[6] = 7;
                        break;
 

                case BANDWIDTH_8_MHZ:
                        val[6] = 8;
                        break;

and try moving BANDWIDTH_AUTO to 8Mhz.
(actually I see two spots)

You might also try 0 for Auto and see what happens.

Let me or the list know.
Jamie