MANY THANKS for such a thorough and wonderful report..!! FINALLY, an unbiased reporting of the receive sensitivity measurements that I can actually agree on...I, too, knew that the lower bands (below 2 MHz) were going to be a struggle with the LimeSDR just because of the input circuit to it. Purportedly 'broadband' by the Mini-Circuits transformer specs, as you move into the 40m band the receive became 'on par' with many SDRs that are out there and is outstanding above 6m. It's my opinion that the existing input circuit is still limiting the LimeSDR, and that even better performance could be had with a custom preselector made for the lower bands - if wanted - tied into the 'front end' of the Lime's ADC.
Again, here we have insight to the LimeSDR, in terms of receive, that we never had before over the bandwidths that we really wanted to know about...Enjoy knowing that our LimeSDR isn't as 'deaf' as the market wanted to play it that way, and that it may even surpass some of the best SDRs out there in the higher bands as-is.
Thanks again for putting this information together, Frans,
73 de Marty, KN0CK