RE: [Discuss-gnuradio] Richard Hosking's quadrature DDS board

[Ettus, Matt]

> >http://members.iinet.net.au/~richardh/Direct%20Digital%20Synt
> hesizer%20using%20the%20AD9854%20quadrature%20DDS.htm
> > >
> > >This is an excellent building block for software defined radio.
> > >There is nothing like it that I have been able to find.  Add a
> > >pair of mixers and feed the results into a sound card and it should
> > >be possible to implement a generic receiver up to 70 MHz or so.
> > >A pair of phase-locked loops might be useful to clean up spurious
> > >signals, however.  I have heard that the M-Audio Delta 44 is the
> > >best available sound card for these purposes, short of instrument
> > >grade ADC's that are out of the reach of most people.
> > >
> > >http://www.midiman.net/products/m-audio/delta44.php
> > >
> > >__________________


I have the Delta 44 (actually a 66, which is a 44 with digital audio
in/out).  It works fine with Linux as long as you use the Alsa drivers.
There is a DC block in there somewhere, but you may be able to remove it.

Matt