After few months away from HF, last night I tried again 30m PSK31. Maybe a better propagation has attracted more stations, since the waterfall was very crowded.
Might have been a coincidence, but I noticed cleaner signals than 8 months ago, and especially cleaner macros! Nobody told me about their computer and software. Only one sent me the various club codes. But ... nobody told me anything about their operating conditions, which I would have liked to know!
Thanks to the 7 guys that answered my QRP calls.