The step in the noise floor of the RSP1A (also the RSP1) is caused by the internal upconverter when measuring below 60MHz. The conversion loss is not compensated by extra amplification inside the MSI001 chip used in the RSP1A
My main problem with the RSP1 (I do not own a RSP1A) is you sometimes see spurs that do not exist and wide span scanning is slow.
What would be the maximum minimum RBW a possible tinySA upgrade must support to enable SSB analysis etc??
