[mythtv] what are the right frequency offsets?

Newbury newbury at mandamus.org
Sun Apr 4 18:49:32 UTC 2010



Sent from my iPhone

On 2010-04-04, at 10:37, Petr Stehlik <pstehlik at sophics.cz> wrote:

> Hi,
>
> in libs/libmythtv/frequencytables.cpp's init_freq_tables() there's a
> list of tables for various countries. I have submitted a Czech DVB-T
> table that works great for some tuners (much better than Germany or
> France tables that we used to use before) but is worse for certain  
> other
> tuners (ASUS My Cinema-P7131 Hybrid). After some trial&error it turned
> out that by using the French offsets (the last two parameters, -166000
> and 167000) the channel scanning works better.
>
> Thus I am wondering how I can find out the correct offsets for DVB-T.
> I've seen it set to 0,0 for most countries but some have 125000 and
> other have the -166k/167k.
>
> Thanks for any pointer. I'd  like to get it fixed in time for 0.23 but
> before submitting a patch with the French offsets for the Czech table
> I'd like to know if it's possible to compute the parameters somehow
> instead of guessing them.
>
> Thanks
>
> Petr
>
>
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