[mythtv-users] mythbackend warnings: frequency out of range

Nick Morrott knowledgejunkie at gmail.com
Wed Feb 22 00:49:34 UTC 2012


On 18 February 2012 10:26, Gavin Whitehead
<gavin at alabastercranium.demon.co.uk> wrote:
> Folks,
>
> Are these warning messages in my mythbackend.log something to be worried
> about?  I get them on start up of the backend.
>
> 2012-02-18 08:28:02.729 DVBChan(6:/dev/dvb/adapter1/frontend0) Warning:
> Your frequency setting (10773250) is out of range. (min/max:950000/2150000)
> 2012-02-18 08:28:04.623 DVBChan(7:/dev/dvb/adapter2/frontend0) Warning:
> Unsupported fec_inner parameter.
> 2012-02-18 08:28:02.906 DVBChan(8:/dev/dvb/adapter2/frontend0) Warning:
> Your frequency setting (11307000) is out of range. (min/max:950000/2150000)

Don't worry about these - they are incorrect warnings as the
frequencies being compared are not comparable. This has been in the
code for a long time - I guess most users just ignore it if things are
working :)

The mux frequency (i.e. 11,307,000 kHz) is the Ku-band frequency that
the satellite's transponder is transmitting on and being received by
the LNB on your dish. The min/max values it is being compared to
(950,000-2,150,000 kHz) is the range of frequencies received by the
DVB-S tuner from the LNB on your dish. Apples and oranges.

In Europe, the min/max values being compared should likely be
10.70-12.75 GHz for DVB-S/S2 transmissions.

I haven't yet completed any channel scanner testing for the 0.25
release, so don't know if this issue is already fixed. If I get around
to such testing I'll check and open a ticket for this issue if
necessary.

Cheers,
Nick

-- 
Nick Morrott

MythTV Official wiki: http://mythtv.org/wiki/
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