All posts by Chris
Below are all of Chris's postings, with the most recent are at the bottom of the page.
All Freeview HD channels are suddenly giving me "No Signal" - although I'm sure I was receiving BBC One HD this lunch time (22nd April).
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I can now report receiving some brief and garbled flashes of a few HD channels, and so the problem seems to be a sudden and catastrophic drop in signal quality from the Crystal Palace transmitter.
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My scanning program is currently detecting the following muxes:
T 482000000 8MHz 3/4 NONE QAM64 8k 1/32 NONE # London
T 529833000 8MHz 3/4 NONE QAM64 8k 1/32 NONE
T 537833000 8MHz 3/4 NONE QPSK 8k 1/32 NONE
T 490000000 8MHz 2/3 NONE QAM64 8k 1/32 NONE # London
T 514000000 8MHz 2/3 NONE QAM64 8k 1/32 NONE # London
T2 0 41011 506000000 8MHz 3/4 NONE QAM64 8k 1/32 NONE # London
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I've started receiving the HD channels from BBCB again, but I'm still not receiving any of the HD channels from COM such as BBC 4 HD and BBC News HD.
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And my missing Freeview HD channels have now returned as mysteriously as they disappeared. And it wasn't my shiny new 4G aerial filter that did it, either! (If it were then I'd have had the channels back last Thursday evening rather than tonight).
So it's a happy, although unsatisfactory, ending...
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Page 2
Friday 20 April 2012 11:10AM
Hmm, my channel scan has resulted in all my SDN channels having QPSK modulation?! I've got no idea how QPSK differs from 64QAM, but I still seem to get a picture.