Re: correlation estimator causing flowgraph to hang: Return Code -15

If work() can reach this line: https://github.com/gnuradio/gnuradio/blob/maint-3.8/gr-digital/lib/corr_est_cc_impl.cc#L311 with an all-zero signal, there could be a /0 error. On Thu, Jul 2, 2020 at 4:04 PM Cameron Matson wrote: > Hi all, > > An update: I've noticed that when the flowgraph hang

Re: correlation estimator causing flowgraph to hang: Return Code -15

Hi all, An update: I've noticed that when the flowgraph hangs it's usually because the correlation estimator block is outputting a relatively larger 'amp_est' tag (in my case this is normally a value < 1 but sometimes up to around 10. When it freezes it is usually > 50). If I then close the GUI

Re: FM Transmission with a vector of bits

https://hackaday.com/2020/04/14/pluto-might-not-be-a-planet-but-it-is-an-sdr-transceiver/ Whoops! Here is the link! > On Jul 2, 2020, at 9:36 AM, Anthony B. wrote: > > Hello, > > Thanks for the answe

Re: FM Transmission with a vector of bits

Hello, Thanks for the answers! Is it this project ? https://github.com/duggabe/gr-morse-code-gen I'm gonna check it out, but it looks like the idea is in there, thanks! Anthony Le jeu. 2 juil. 2020 à 18:21, Alex Humberstone a écrit : > Hey Kevin, I don't see the link that you mentioned, d

Re: FM Transmission with a vector of bits

Hey Kevin, I don't see the link that you mentioned, did you forget to include it? On Thu, 2 Jul 2020 at 11:18, Kevin McQuiggin wrote: > Hi Anthony: > > Check out this link. The author is using a Pluto but he developed a > flowgraph to transmit a vector that represents Morse code. Pretty > wel

Re: FM Transmission with a vector of bits

Hi Anthony: Check out this link. The author is using a Pluto but he developed a flowgraph to transmit a vector that represents Morse code. Pretty well-explained. The ideas you need are likely in there. Kevin > On Jul 2, 2020, at 8:40 AM, Anthony B. wrote: > > Hello all, > > I am trying

FM Transmission with a vector of bits

Hello all, I am trying to build a very simple FM Transmitter using a flowgraph as a reference. The principle is the following : Signal source of 48 kHz Sample Rate > Rational Resampler up to 360 kHz Sample Rate > Add Constant 1 > VCO at 360 kHz with a carrier frequency at 120 kHz. What I am tryi

Re: ALSAPulseAudio procedure

On Thu, Jul 02, 2020 at 06:43:21AM -0500, Barry Duggan wrote: > Probably I will create a new page for diagnosing audio problems. All > suggestions are welcome :) Depending on what exactly you are doing, there may be another problem. If you take the signal from an RF source, process and decimate

Re: ALSAPulseAudio procedure

Hi Ryan, Thank you for that information! That certainly is an essential piece to be added to the wiki! Probably I will create a new page for diagnosing audio problems. All suggestions are welcome :) Stay safe. -- Barry Duggan KV4FV On Wed, 1 Jul 2020 13:31:15 -0400, Ryan Volz wrote: Hi Ba

Re: ALSAPulseAudio procedure

Hi Cinaed, The Pluto_NFM.grc is in https://pastebin.com/XZN0dK6x I have found that reducing the buffer size on the Pluto almost eliminated the audio underruns. So what I am left with is needing to know what is wrong with the procedure in https://wiki.gnuradio.org/index.php/ALSAPulseAudio#Mo