SQ9S is the callsign of Adam Grzenia, Polish ham-radio operator. I heard him 2 days ago via SSB (voice) communication at 13:20 UTC. I can't remember the frequency, but I am sure that it was somewhere on the 40m band.
Adam is very good ham radio operator and I will consider this QSL one of the most valuable ones, especially for the reason because he is one of my huge influences, and with his DX Adam blog, he made an influence on me.
DX Adam is name of his blog, which is pretty much straightforward blog about QSL'ing and QSL cards he gets. His collection of pirate and legal broadcasters is pretty impressive. You can check it out here.
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OdgovoriIzbrišiThanks you very much.
Your radio friend Adam from Poland.