>Question, In the I/Q mode is the Global Level relevant? It did not go above 2% for this pass. I did not correct
In principle, weak signal can pose a problem if the digital noise is relatively high. For example, I remember that for old 16 bits sound cards, only 13 or 14 bits could really be used. So in that case very weak signals were mixed with a drop of noise.
I have not tested my RSP1A but Multipsk only uses the first 8 bits of the 10 or 12 bits possible, so I suppose that these 8 bits are surely “clean”. 2% of level means that you work with about 2 bits. It’s not ideal but it is not so bad, seeing your nice images.
Under DOS, there were decoders working with one bit and they worked well…
De : firstname.lastname@example.org [mailto:email@example.com] De la part de Fred Albertson