[linux-dvb] SDR downconverter

[<mocm@metzlerbros.de>]

Steve Schear writes:
 > I'm part of small an open source team developing a software 
 > radio.  http://www.gnu.org/software/gnuradio/gnuradio.html Basically, its 
 > an attempt to remake radio design and development by bringing the PC's 
 > processor as close to the antenna as possible.  Our project is focused on 
 > enabling reception of modern digital modulation schemes, especially wide 
 > band.  Right now we're using a rather expensive, commercial, analog-digital 
 > converter card tied to a cable modem/TV tuner board.  I'd like to find an 
 > inexpensive, more integrated, replacement for both the converter and 
 > tuner.  What we need is a simple, PCI, analog tuner board for which Linux 
 > drivers are available.  The board needs to capture and digitize the ~6MHz 
 > channel.  No MPEG processing needed.
 > 
 > Thanks in advance for recommendations.
 > 

Have you looked at the bt848/878 (now cn848/878) TV tuner cards. The
chips have a raw mode that should allow you to get the digitized output
of the Tuner without any preprocessing by the chip.

Marcus


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