I’m experiencing some issues trasmitting with my brand new LimeSDR-USB (v1.4s) and GNURadio.
My setup is:
- GNURadio 3.8.2 with gr-limesdr (latest commit from gr-3.8, 47511dd) and LimeSuite (latest commit from master, a45e482)
- LimeSDR-USB v1.4s with latest gateware connected through USB3.0
- Spectrum analyzer connected to TX1_1 port from LimeSDR-USB
I configure GNURadio to produce a tone at 10kHz, amplitude 0.5, like this:
What I obtain in the spectrum analyzer is this:
I have a LimeSDR-Mini as well, so I’ve tried just swaping one Lime for the other, same configuration and flowgraph, and I get this:
Then I’ve tried setting gain for LimeSDR-USB to 0, with the same result, just different scale.
I have several LimeSDR-USB units, and all of them show the same results, so I think it’s a configuration issue.
I gave it another try using the ENABLE_NEW_GAIN_BEHAVIOUR option in LimeSuite and recompiling everything, but was without luck.
Do you have any idea how to fix this?
Thanks in advance.