[linux-dvb] Recieving DVB-C with DVB-T units

BOUWSMA Barry freebeer.bouwsma at gmail.com
Wed Aug 5 02:56:08 CEST 2009


On Tue, 4 Aug 2009, Christian Wattengård wrote:

> But after doing some research on Wikipedia and such, I can't figure
> out why a DVB-T unit can't be easily modified to recieve DVB-C?
> They use the same frequencies, the DVB-T specs support QAM (atleast low QAM).
> My specific cable network uses 64QAM which the specs apparently
> supports... So where is the underlying problem?

Basically -- and I could well be wrong, DVB-T uses COFDM carrier
modulation, which DVB-C does not -- the DVB-T signal is composed
of several thousand carriers, while the DVB-C signal is a single
carrier modulated directly.  Thus, differently-able hardware is
needed facing the antenna.


> Oh... And hi, I'm Christian, I'm from Norway, and this is my first
> post to the list :)

Welcome.  You probably got a sinister notice that this list is
not to be posted to.  But as the signature states, it's the
dvb-users list, while the list to which replies have been
hijacked is a developer list where your question would likely
go unanswered in the noise.

Oh, shouldn't your gmail address be `cwattengaard' instead?  ;-)
I ask having conditioned myself to type `Aarhus' and `Aalen' and
`Aargau', speaking them all the same, confusing the heck out of
the swiss...


barry bouwsma



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