Bug#720879: Table /usr/share/dvb/dvb-t/cz-All outdated

[Oliver Schinagl]

On 09/19/13 02:46, Jonathan McCrohan wrote:
> reassign 720879 dtv-scan-tables
> forwarded 720879 oliver at schinagl.nl
> thanks
>
> Hi Pavel,
>
> On 25/08/13 22:32, Pavel Mendl wrote:
>> Package: dvb-apps
>> Version: 1.1.1+rev1483-1
>>
>> When I did run scan command using /usr/share/dvb/dvb-t/cz-All table, some
>> channels that my "ordinary" TV did tune did not tune (even attempt to tune) on
>> the PC TV adapter. I traced issue to
>> the aforementioned table, which is (by commented header inside the table)
>> taken from public sources not directly under the CZ TV regulator's control. I
>> found the official broadcast spectrum
>> regulation (as of August 2012 - currently valid) here
>> http://www.ctu.cz/cs/download/plan-vyuziti-radioveho-spektra/rok_2012/pv-
>> p_10-08_2012-11.pdf
>>
>> It states on pages 9, 15-16 that all the channels 21-60 are allocated for
>> various DVB-T networks in the country. The aforementioned table cz-All did
>> include just some of them, what lead to
>> "missing" of some newly installed channels from the scanning. (Understandable,
>> DVB-T is still in the development phase in Czech republic and many spectrum
>> allocations are still designated as
>> testing or not-definitive.)
>>
>> Attached is the new table I created, ensuring scan of all the channels
>> theoretically allocatable in Czech republic. Tested on my own comp it really
>> found channels consistent with the TV box scan,
>> with no bugging.
>>
>> The only part I am not sure about is the guard-interval where 1/4 and 1/8
>> values were irregularly mixed in the original table and no regulatory
>> guidelines are released. Based on the theoretical
>> assumption, that 1/8 should tune (i.e. not exclude) more channels than 1/4, I
>> entered 1/8 for all the channels. Should you have better experience or
>> regulatory resources on the topic, please,
>> correct these values as appropriate.
>>
>> I suggest to replace the cz-All table with my updated one in the next release.
> Thanks for your mail. The scan files have been split out into a
> separate package called dtv-scan-tables. Therefore I am reassigning it
> to d-s-t. Oliver Schinagl (CC'd) is the upstream dtv-scan-tables
> maintainer. I have reattached your cz-All-actual-2013 for his consideration.
Pushed to github, git.linuxtv.org for inclusion.

Oliver
>
> Thanks,
> Jon
>