Hi John, On 5/12/07, John Newbigin <jnewbigin@xxxxxxxxxxxxxxx> wrote:
Markus Rechberger wrote: > > > Anyway do you know the exact difference between DVB-T in Australia and > other countries? I can answer that. AS4599 and AS4933 are the standards for DVB-T in Australia. It is basically ETSI standard DVB-T. It defines the meanings of content descriptors and ratings and introduces descriptor 0x83 for the recommended channel (which I think is a UK standard), none of which should impact on the driver. It also defines which streams should be used for various formats. There is a lot to do with PAL compatibility (for set top boxes etc) The actual frequencies for broadcast are the same channels as used for analog. All channels are 7Mhz (except UHF27 which is only 6MHz and not used although it /might/ get used in the future for radio). Long term the ACMA want to use SFN but I don't know if anyone does yet. Channels may use (with the permission of the ACMA) a +/-125kHz offset to prevent interference with other services etc. The channels suitable for DVB-T range from 177500000 through to 816500000 (center frequency) Transmission may use 2k or 8k COFDM carrier. Transmitters may use hierarchical modes but I don't think any currently do. Basically, the major difference is 7Mhz channels. I have done a lot of research on DVB-T in AUS if anyone whats more details.
can you give us more information about that? The Xceive firmwarepackage contains extra firmwares for Australia, it would be good to directly focus on the specific difference instead of passing eg. a countrycode to a dvb driver (this shouldn't be an option) thanks, Markus _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
