Dear Gabriel Pehlarovich: If the problem only happens when you add an audio sink block to the code, my guess is the (hardware-level) clock mismatch between the SDR master clock and the master clock used by the audio source (a.k.a. "two-clock problem"). I never used E310, so I am not sure if the clock of its audio i/o has any relationship with the clock of the LO used for the radio transmission, but this is a quite common problem.
Try searching for something like "two clock problem gnuradio" using your favorite search engines, and you will get a lot of relevant archived discussions (..but the fix can be nontrivial). Regards, Kyeong su shin On Sat, Apr 22, 2017 at 10:27 AM, Gabriel Pechiarovich < [email protected]> wrote: > Dear all > > > I've been testing an FM tranceptor over an Ettus E310, and after 10 or 15 > seconds i get UUUUU in the screen, maybe some of my parameters are wrong. > > When i'm transmitting audio fron a wav file only, the undersampling never > happends, it only ocurs when i add the audio source block. > > I'm attaching the grc file. > > BR > Gabriel Pechiarovich Salas > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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