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<blockquote data-quote="CyberSimian" data-source="post: 1286031" data-attributes="member: 141969">Some HD channels are broadcast in a very low-power MUX, which is difficult to receive at many locations. I cannot receive it at all (but that is because I use a loft aerial -- I probably could receive it if I used an external roof-top aerial).The main HD channels are broadcast in a high-power MUX, so you should be able to receive these:&nbsp;BBC1 HD, BBC2 HD, CBBC HD, ITV1 HD, Four HD, Five HD


The remaining HD channels are broadcast in a low-power MUX. You may be a fan of &quot;QVC Style HD&quot; and &quot;QVC Beauty HD&quot;, but the only channels that I miss are &quot;BBC4 HD&quot; and &quot;BBC News HD&quot; (I have to watch the SD versions of these channels). Some questions:

Which HD channels are missing?
Can your TV receive these missing channels?
Have you retuned your TV?
Does your TV use the same aerial feed as your HTPC?

It is possible that your transmitter is undergoing some maintenance, and the HD channels are not being broadcast at the moment, or the HD channels are being broadcast at low power.

It is also possible that your HD MUX has changed frequency, and MP is still using the old &quot;tuning parameters&quot; file, which won't find the MUXes that have moved. Your TV probably does automatic retuning (my Sony TV does), so your TV may have retuned itself to find the moved channels. In TV Server you can perform an &quot;All regions&quot; scan, which scans every possible frequency in the DVB-T/T2 band. It takes a while (10 to 20 minutes perhaps, depending on the speed of your tuner), but it will find all of the MUXes if the signal is strong enough.

-- from CyberSimian in the UK</blockquote>

[QUOTE="CyberSimian, post: 1286031, member: 141969"] Some HD channels are broadcast in a very low-power MUX, which is difficult to receive at many locations. I cannot receive it at all (but that is because I use a loft aerial -- I probably could receive it if I used an external roof-top aerial). The main HD channels are broadcast in a high-power MUX, so you should be able to receive these: [INDENT][JUSTIFY]BBC1 HD, BBC2 HD, CBBC HD, ITV1 HD, Four HD, Five HD[/JUSTIFY][/INDENT] [JUSTIFY] The remaining HD channels are broadcast in a low-power MUX. You may be a fan of "QVC Style HD" and "QVC Beauty HD", but the only channels that I miss are "BBC4 HD" and "BBC News HD" (I have to watch the SD versions of these channels). Some questions: Which HD channels are missing? Can your TV receive these missing channels? Have you retuned your TV? Does your TV use the same aerial feed as your HTPC? It is possible that your transmitter is undergoing some maintenance, and the HD channels are not being broadcast at the moment, or the HD channels are being broadcast at low power. It is also possible that your HD MUX has changed frequency, and MP is still using the old "tuning parameters" file, which won't find the MUXes that have moved. Your TV probably does automatic retuning (my Sony TV does), so your TV may have retuned itself to find the moved channels. In TV Server you can perform an "All regions" scan, which scans every possible frequency in the DVB-T/T2 band. It takes a while (10 to 20 minutes perhaps, depending on the speed of your tuner), but it will find all of the MUXes if the signal is strong enough. -- from CyberSimian in the UK[/JUSTIFY] [/QUOTE]

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