I’m trying to transmit a simple 1khz tone from a LimeUSB SDR using two methods. The WFM block on SDRAngel, and making a flow on GnuRadio.
I am using an older version of SDRAngel (4.12.1) on Linux Mint/Ubuntu 18.04.
I am able to transmit a signal using both, however the quality of the tone is different. It is much cleaner on SDRAngel but not so on GnuRadio. I am trying to understand why this is so.
I’ve attached the flowgraph and sdrangel screenshots
My guess is that it has to do with the way SDRAngel and LimeSDR configure the hardware while transmitting and if I can understand the right variables to set on gnuradio, I might be able to fix this.
Any pointers towards getting a clean WBFM signal from gnuradio would be really helpful.
Here’s all the relevant version info
OS: Linux Mint/Ubuntu 18.04
GnuRadio: v184.108.40.206-95-g70738b23 (Python 3.6.9) (with gr-limesdr plugin)