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RE: [Discuss-gnuradio] Re: gnu radio with a soundcard

From: Bob McGwier
Subject: RE: [Discuss-gnuradio] Re: gnu radio with a soundcard
Date: Tue, 2 Sep 2008 00:45:05 -0400


Get a softrock 40.  I/Q sampler based on the quadrature sampling detector (fully balanced. Virtual ground, thus not Tayloe).  High performance, good sensitivity.  Yields I/Q in stereo audio for baseband processing.  If you already have a USRP, get the LFRX.








Frank Brickle and I wrote the SDR core for the software in the GUI shown in the second link (PowerSDR).



Bob McGwier




ARRL SDR Working Group Chair

Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats,


“Trample the slow ....  Hurdle the dead"


From: address@hidden [mailto:address@hidden On Behalf Of sriram s
Sent: Tuesday, September 02, 2008 12:33 AM
To: address@hidden
Cc: gnu radio
Subject: [Discuss-gnuradio] Re: gnu radio with a soundcard


You could try tapping the IF out of an old radio (which uses FETs) . But you will need  a mixer and band pass filters to bring the signal down to a range which your soundcard can handle.



On Sat, Aug 30, 2008 at 11:25 PM, Mathew George <address@hidden>wrote:

>  Hi all,
> Can someone explain how we may build a FM/SW receiver using A/D D/A
> converter in a sound card and minimal additional hardware? Somewhere I have
> read that this is possible, in principle, but could not yet gather info
> suitable for a novice.
> Thanks for the help.
> Cheers,
> Mathew
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