Hi Henk, the problem is that the RTL dongle (and any SDR peripheral) just gives you the signal as it is in the air -- you will still have to demodulate it to get audio! Now, wild assumption: you want to listen to FM Radio for a start. So: * configure your audio sink to 44100 Hz sample rate * use a WBFM receiver block with a quadrature rate of N*44100, and N as decimation, feed the output (orange!) into the audio sink * add a fractional resampler between source and WBFM receiver to match N*44100 to a sampling rate the Dongle supports
Best regards, Marcus On 07.09.2015 10:03, 12henk12 wrote: > Hello all > 4 weeks ago did my first steps into Linux Ubuntu. > I am trying to get the RTL-Dongel to work but still not succeded in that, > Time to ask some help. > There is a image with pre-installed drivers and GNU-Radio companion, > http://gnuradio.org/redmine/projects/gnuradio/wiki/GNURadioLiveDVD > I have downloaded that and put it on a USB stick. Works fine. > > In the terminal I enter rtl_sdr -t and the RTL-dongel is found and it works. > Then I start GNUradio companion, it is version 3.7.7.1. The RTL is found in > the sources. > But the radio has a blue output and the audio-sink a orange one. In the > Help-doks it says that this is because of the datatype > but I cant change that anywhere. The dongel properties-block gives "complex > float 32". > > Can you help me getting it to work? Only with a working system I can go > further learning. > > Thanks > > Henk > www.sterrenwachtleeuwarden.nl > > > > -- > View this message in context: > http://gnuradio.4.n7.nabble.com/Noob-question-1-tp55832.html > Sent from the GnuRadio mailing list archive at Nabble.com. > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
