I run a NBFM monitor 24x7 and it takes up a small fraction of a RPi3 (recording to files). It's likely that you are running across some sort of rate/buffer problem, so keep trying!
On Wed, Dec 16, 2020 at 6:34 PM Fabien PELLET <fpellet.f4...@free.fr> wrote: > Hello, > > I do not try to run GNUradio over my Pi4 for the moment but I encountered > the problem you describe with the audio on a laptop. > > I solved it by specifying the name of the audio hardware (aplay -l as far > as I remember in a terminal would help) and by checking the box for the > blocking process. > > I hope it will help you, > Best regards, > Fabien, F4CTZ > > ---- Dan Romanchik KB6NU a écrit ---- > > Has anyone successfully run GNU Radio on a Pi 4? I recently purchased an > RTL-SDR dongle and thought it would be fun to experiment a little with GNU > Radio and learn something about SDR. > > A couple of days ago, I fired up GNU Radio, and after having some trouble > figuring out how to get the audio sink to talk to the Pi, I downloaded > VE6EY's FM receiver flow graph. The flow graph runs, but the Pi 4 just > doesn't seem to have enough horsepower to run it in real time. The audio is > slow and distorted. > > Thinking that it might be the WX widgets slowing down the program, I first > deleted the FFT display widgets, then converted the WX slider controls to > QT range controls. Neither had any effect on how well the flow graph ran. > > GQRX and CubicSDDR seem to work just fine. At least with both of them, I'm > able to receive FM broadcast and NOAA weather station. But, maybe the PI4 > just doesn't have enough horsepower to run GNU Radio? If so, that's kind of > disappointing. > > 73! <—ham radio lingo for “best regards" > > *Dan KB6NU* > CW Geek, Ham Radio Instructor > Author of the "No Nonsense" amateur radio license study guides > Read my ham radio blog at http://www.kb6nu.com >
