[linux-dvb] Re: DVB-T in Australia

[Malcolm Caldwell <malcolm.caldwell@ntu.edu.au>]

On Tue, 2002-04-23 at 16:00, Dave Chapman wrote:
> On Tuesday 23 April 2002 05:59, you wrote:
> > As far as I know no one has got DVB-T to work in Australia.  I know this
> > has been talked about before but there has been no definite answer. 
> > 
> > There are people here reporting on the aus.tv.digital newsgroup that the
> > DVB-T cards that are available do not work here.
> 
> Have they been using the supplied Windows software, or the Linux software?  
> The Windows software probably doesn't allow you to fine-tune the tuning 
> parameters.

Windows as far as I recall.
 
> > There seems to be a few potential/actual problems:
> > 1. In most places in Australia DVB-T is being brodcast on VHF channels
> > 2. It would seem that as Australia uses 7Mhz channels (PAL-B) in the UHF 
> band
> >    where as most countries use 8Mhz channels in UHF (PAL-G)
> > 3  Others I perhaps don't know about.
> > 
> > Now, luckily, I live in a city where all the digital broadcasts are on
> > UHF channels, so problem 1 goes away!
> > 
> > So how about 2?
> 
> The L64781 COFDM demodulator used in the Nova-t cards supports 6, 7 and 8 MHz 
> channels.  From looking at the specifications, it seems to support all 
> conceivable forms of DVB-T broadcasts, so that shouldn't be a problem.  The 
> Linux driver allows applications to set all these paramaters.
> 
> > If I understand correctly the nova and the tecnotrends DVB-T cars are
> > essentially the same?
> > 
> > I would guess that the specifications for the tuner chips used on these
> > cards would answer these questions.  If so can someone (convergence?)
> > have a look?  Or at least point me at the specs for the cards?
> 
> I don't know about the actual tuner, but the "COFDM Demodulator" in both 
> cards is the L64781 which was co-developed by LSI Logic and BBC Research and 
> Development.  A search at www.lsilogic.com will give you information on this 
> chip, but I couldn't find the actual datasheet (but I downloaded it from 
> there last year).

Yes - I found via google but had to resort to the google cache.
 
> Regards,
> 
> Dave
> 
> 
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