[linux-dvb] Problem tuning with Freecom USB DVB-T receiver

Måns Rullgård mans at mansr.com
Sun Feb 25 15:27:48 CET 2007


Måns Rullgård <mans at mansr.com> writes:

> I'm having some trouble getting a Freecom-branded USB DVB-T receiver
> working properly.  It gets firmware loaded, and is detected seemingly
> correctly.  This is where the fun ends:
>
> Using a channels.conf generated by dvbscan with a properly working PCI
> card, tzap fails to lock when trying to tune to BBC1:

[...]

> Some frequencies seem fine, though:

[...]

> Testing all frequencies in my channel list, I get these results:
>
> 489833330 BAD
> 513833330 BAD
> 530167000 OK
> 545833330 BAD
> 562166670 OK
> 570166670 OK
>
> Does anyone have an idea what's going on here?  I've tried the drivers
> that come with Linux 2.6.20 and the latest development tree, getting
> the same results with both.  I'm getting no error messages from the
> drivers.

As is typical, more googling after sending this mail turned up the
answer.  This card seems to need an offset added to some frequencies.
MythTV appears to be coping with this, so all is well for now.

-- 
Måns Rullgård
mans at mansr.com



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