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All posts by Don O'Ketty

Below are all of Don O'Ketty's postings, with the most recent are at the bottom of the page.

D
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Monday 7 February 2011 1:15PM
Hayes

Does anyone know if the PIDS (Video, Audio) for Freeview channels are the same across all copies of that Mux from different transmitters? For example, are the PIDS for BBC1 on Mux 1 (Video:600, Audio:601) the same on the Crystal Palace transmitter as they are on the Sandy Heath transmitter?

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Monday 7 February 2011 1:59PM
Hayes

Thanks for that. Whilst it seems easy to get the varying frequencies of each MUX in the public domain - or on sites such as this - and take it into account, the data for the PIDS, on the other hand, doesn't seem to be freely available. It's reassuring to know that the PIDS don't change as it makes the application I am working on easier!

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I am a bit confused about wild differences in signal strengths I am seeing from Sandy Heath.

I understand why C31 is low, but why do I see this:

C24, Strength 6619069, Quality 100%
C27, Strength 6487999, Quality 98%
C31, Strength 4521926, Quality 68%
C48, Strength 2686917, Quality 40%
C52, Strength 131019, Quality 0%

If there was something wrong with the aerial and the way it was pointing, why would I get virtually perfect signal on two channels and poor (or absent) on others? It's almost like these channels are still on low power?

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