[linux-dvb] Re: Evil transmitters: a gotcha with the scan program (but not it's fault)

[Immo Benjes <immo@benjes.eclipse.co.uk>]

On Wednesday 14 May 2003 11:29 am, you wrote:
> >
> > End result? You add one of the Sudbury multiplex frequencies to
> > initial.h, run scan, it produces details of that multiplexes channels
> > but on the wrong frequencies (well, right for Tacolneston) then goes
> > wondering of on a wild goose chase looking at the wrong set of
> > frequencies (for Sudbury, right for Tacolneston).
>
> hmm, sorry -- here you have no choice but want to ask your provider to
> transmit correct network information tables, they seem to be wrong...

No the data is correct, the other_frequency_flag in the NIT is set, that means 
that the frequency_list_descriptor has to be used as well. So the scan 
program has to check whether the current frequency is the same as the 
frequency given in the NIT. If not it has to check the frequencies given in 
the frequency_list_descriptor.

See also my earlier mail with a dump of the NIT for Reigate (where you have 
the same problems as in Sudbury).

Regards

Immo


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