Re: Re: MythTv DVB (Help)

["Pete Shew" <pslists@xxxxxxxxx>]

Have you seen http://www.ethics-gradient.net/myth/mythdvb.html
for details
on setting up DVB cards. I have tried different DVB cards and tested with
tzap and mplayer before using mythtv. Once I had done an original scan on
Belmont, MythTV seems to be able to scan itself for channel changes - but
I've also had to manually edit the channels table in the database a couple
of times to get rid of dross and merge entries.

I didn't know the Belmont frequencies so I started with Wolfbane
http://www.wolfbane.com/ukdtt.htm
which gives for WinterHill -

103.00 + Winter Hill (E)            56  10k 734  66  10k 712  68  10k 712
67  10k 682  60  10k 650  63  10k 650  CD H SD660144 438

showing the channels for the multiplexes as 56,66,68,67,60 and 63. It also
has QAM information.

The OffCom site  also has digital transmitter information
http://www.ofcom.org.uk/static/reception_advice/digital_trans_guide/show_tra
nsmitter.asp-siteID=43.html N.B. note the offset values, you will need
these.

I then went to DigitalSpy - http://www.digitalspy.co.uk/terrestrial/tuning/
which told me the centre frequencies for each channel

So multilpex 1 BBC  is channel 56 with a positive offset, and has a centre
frequency of 754MHz. Write that as 754000000 and add the offset of 167KHz
gives 754167000 (This is slightly different from the figure I quoted from
the uk-Winterhill file!)

You can work the others out and make a better uk-Winterhill file, runs scan
and get a channels file and then use tzap to see if you get lock, and
finally mediaplayer to watch the TV.

You may find that your DVB card needs a kernel upgrade - I started with
knoppmyth and had to tweak the modules for a Pinnacle card and upgrade the
kernel for a Hauppauge Conexant chip card.

I started with an AverMedia 761, and added a Pinnacle but they wouldn't
work together so I pulled the Pinnacle and tried a Hauppauge, finally
adding a second Hauppauge with the AverMedia as the lowest priority.

Now I'm fretting about the upgrade to MythTV 19 as I've done quite a bit of
fiddling. :-(

Pete

*********** REPLY SEPARATOR  ***********

On 15/02/2006 at 08:52 Marcus Warrington wrote:

>Thanks Pete,
>
>I tried 754166670 but still failed... Mmmm.. maybe I need to check
>the actual feed (it was working last time I tried it but sods law
>says something's broke in the mean time!)
>
>Marcus
>
>----Original message below-----
>
> Date: Tue, 14 Feb 2006 12:09:14 +0000
> From: "Pete Shew" <pslists@xxxxxxx>
> Subject: Re: MythTv DVB (Help)
>
> I used the linux-dvb-apps scan program to scan my cards after I found
the
> Belmont frequency table from somewhere. There is a uk-Winterhill table
> already in the tar file which contains:
>
> # Winter Hill, North-West England
> # T freq bw fec_hi fec_lo mod transmission-mode guard-interval
hierarchy
> T 754166670 8MHz 3/4 NONE QAM16 2k 1/32 NONE
>
> this might be enought for Myth to get started if you tell it the
>754166670
> frequency. Otherwise get the linux-dvb-apps
>
> Pete
>
> *********** REPLY SEPARATOR  ***********
>
> On 14/02/2006 at 11:18 Marcus Warrington wrote:
>
> >Having played with MythTV for a while using an old analogue card
> >(pinnacle)
> >I'm now trying to setup a dual DVB card setup. I'm using KnoppMyth
and
> >have installed it but am now having trouble setting up the DVB
part.
> >
> >Does anyone have the channel/frequency file that I need for the
> >winterhill transmitter ? I've tried scanning for stations but it
> >doesn't find anything.
> >
> >Cheers
> >
> >Marcus
>
>
>
>
>Yahoo! Groups Links
>
>
>