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<blockquote data-quote="Archive4" data-source="post: 915072">OK I have a theory that may explain Joddle´s experience, but would like some input from someone who is a specialist in receiver/STB design.I understand about amplification and attenuation, having spent 22 years with BT, over 15 as a special faults manager. What I need is some input from someone who understands the STB design.We all know sometimes the stronger txps can overload the STB, many references to members having to put attenuators in line for, for example, Sky News or Pick, because of overload ( i.e. too strong a signal for the box to deal with, most having a max threshold of approx -29dB ) and having no problem with the weaker signals on the spotbeams.Is it possible, if the data txps (i.e. 11778) or even South beam txps (i.e. 12207) get to such a high level, even if the box tuner is on 10817, that it can cause the &quot;box&quot; to wobble? Especially since many boxes watch all txps, esp data txps for guide and txp change info, to which &quot;us watchers&quot; are oblivious?Just a theory!</blockquote>

[QUOTE="Archive4, post: 915072"] OK I have a theory that may explain Joddle´s experience, but would like some input from someone who is a specialist in receiver/STB design. I understand about amplification and attenuation, having spent 22 years with BT, over 15 as a special faults manager. What I need is some input from someone who understands the STB design. We all know sometimes the stronger txps can overload the STB, many references to members having to put attenuators in line for, for example, Sky News or Pick, because of overload ( i.e. too strong a signal for the box to deal with, most having a max threshold of approx -29dB ) and having no problem with the weaker signals on the spotbeams. Is it possible, if the data txps (i.e. 11778) or even South beam txps (i.e. 12207) get to such a high level, even if the box tuner is on 10817, that it can cause the "box" to wobble? Especially since many boxes watch all txps, esp data txps for guide and txp change info, to which "us watchers" are oblivious? Just a theory! [/QUOTE]

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