Actually, the software on your pc turns off the decoder in the dongle and takes I and Q directly, then decodes it on the PC.

Probably won’t work for TV reception here (besides, the bandwidth you get that way is ‘only’ about 2MHz wide), but NBFM, WBFM, AM, PSK, FSK, blah blah blah can all be decoded if they run in under 2MHz bandwidth.

Rusty

From: plug-discuss-bounces@lists.phxlinux.org [mailto:plug-discuss-bounces@lists.phxlinux.org] On Behalf Of Derek Trotter
Sent: Wednesday, January 23, 2013 11:28 AM
To: Main PLUG discussion list
Subject: Re: gnuradio, sdr, DAB USB dongles, and so forth?

Sounds interesting, but if it won't work with U.S. digital tv, how would you test it?  Wouldn't it only be useful overseas?

On 01/23/2013 08:13 AM, Carruth, Rusty wrote:

So, has anyone here been playing with SDR?

Specifically I am thinking of using one of those USB TV receivers (from overseas - they work with DAB or DVB+T which isn’t our standard over here in the states) and either gnuradio or something else.

There was an article in QST (a ham radio magazine) ‘recently’ about it, so I rushed out and bought one of the USB thingys and now I’m trying to get all the pieces in the right place.  I’ve tried SDR#, gnuradio-companion, and probably a few other things.  The controls for SDR# don’t seem to work for me, and also I don’t seem to be able to get the receiver and the software tied together.

Is anyone else playing with this?

Rusty