[mythtv-users] LNB configuration for second DVB-S2
josu.lazkano at gmail.com
Fri Aug 12 12:38:24 UTC 2011
2011/8/12 Simon Hobson <linux at thehobsons.co.uk>:
> Josu Lazkano wrote:
>>Thanks Simon, I just want to watch Digital+ channels:
>>This are the frequencies:
>>All of them are on the same polarization.
> Polarisation is only half the problem, they need to be in the same
> band as well. I don't know enough abut sat to know if that's the
> case, but they do all appear to be in the lower end of the band so
> there's a good chance they are all available with the LNB set to low
>>I need to configure both devices with same parameters? I have a DC
>>blocker to put on the splitter, is this necessary?
> Probably, but the control signals are AC as well.
> If they are all in the same band/polarisation, then you should be
> able to configure Myth by only configuring those channels. That way,
> neither tuner will need to switch to the other band and/or
> polarisation and it'll probably all work.
> As a test for whether you have enough signal, it would be worth
> trying with just one tuner connected through the splitter AND a 75
> ohm terminator fitted to the other output to "soak up" the power that
> would normally go to the other tuner.
> If you can do that and still get a picture then it would look like
> you have enough power and the splitter is passing the required
> signals. If not, then either the splitter is blocking the control
> signals or LNB power, or you don't have enough signal strength
> Simon Hobson
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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I will try when arrive to home.
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