[linux-dvb] software radio
freebeer.bouwsma at gmail.com
Wed Sep 17 14:24:31 CEST 2008
On Wed, 17 Sep 2008, Markus Rechberger wrote:
> >> Is it possible to access the sampling subsystem of a dvb card
> >> as like skystar 2 or any other ?
> have you had a look at:
I have now :-) thanks
And I feel really stupid, thinking this was a beginner question.
And I wish I had been asleep now. My foot tastes terrible.
As you see, my understanding of the word `sampling' is based
on my understanding and work in radio and telephony some 30 years
ago, when I didn't even realize that what I was doing would be
somehow relevant today.
Anyway, I really do not know, but I would imagine that most
current sat devices, including the SkyStar, expect to have a
hardware demodulator in place, and have no provision to get at
the signal on the other side of that chip.
Which makes me wonder -- the IF of a satellite signal is
typically 1GHz and up. Is there a standard second IF
frequency that various hardware uses? Given that it is
possible to have transponders with high symbol rates, I
wonder if satellite software receivers will be pushing too
hard on bandwidth of various busses -- which already seem
to suffer when delivering already-demodulated data.
Those familiar with chip and board design can answer the
original question far better than I ever could.
Then again, I have my head firmly set on 20-year-old
think i'll quietly close my mailreader
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