Thank you very much. Now it is running perfectly :) You helped me a lot to understand it. Thank you.
Alexandru Csete-3 wrote: > > If you fix your sampling rates to be consistent in all blocks (e.g. > 64k on audio side, 320k on the other side) and decrease the signal > frequency to be strictly less than half the audio rate, say 31 kHz > you'll see the peaks. > > Note that the NBFM block is for narrow band FM, which usually means > less than 5kHz. If you want to send higher frequency signal you may > want to switch to the WBFM block. > > Alex > > > On 13 July 2010 15:33, EsserIHF <[email protected]> wrote: >> >> Thank you, >> I tried to use the NBFM transmit block. >> I generated a signal with a frequency of 32k. This I connected with the >> NBFM-Block. The quadrature Rate of this block is 320k. This output i >> connected with the USRP an a FFT-Plot. I expected to see a line >> at 320k and two lines at (320k- 32k) = 288k and (320k+32k) = 352k. But on >> the FFT-Plot and on the Spectrum Analzer which is connected to the USRP, >> I >> only see a line at 320k. >> Here the grc-file: >> http://old.nabble.com/file/p29150442/myFM.grc myFM.grc >> -- >> View this message in context: >> http://old.nabble.com/fm-modulation-tp29149390p29150442.html >> Sent from the GnuRadio mailing list archive at Nabble.com. > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/fm-modulation-tp29149390p29158586.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
