Brian Butterworth wrote:
This is great news!
What is the UHF channel number that this test service is being
broadcast on from the Guildford transmitter?
I'm presuming that this is in 256QAM mode, with about 30Mb/s with a
few MPEG-4 (part 10) video streams? Will any of the existing DVB-T
USB dongles will work in 256QAM mode?
Are the other broadcast parameters now fixed, or will this test
service be used with varying power levels and error correction levels
to determine the best possible ones for UK broadcast?
Is the BBC going to do some tests to see if the service is really
going to work in domestic properties like it did with WHP056?
http://www.bbc.co.uk/rd/pubs/whp/whp056.shtml
Unfortunately DVB-T2 is more complicated than that. Each service within
a multiplex can have its own transmission parameters, and there are a
lot more parameters to choose from. Additionally, there are two input
formats (i.e. you don't have to use Transport Stream)
I believe the broadcast uses a single set of parameters with H264 video
in MPEG2-TS - but will check for you.
Also, I doubt any dongles will work.
Simon
--
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*Simon Thompson MEng MIET *
Research Engineer (Electronics)
PRINCE2^TM Registered Practitioner
*BBC Future Media and Technology*
