I am still trying to get my copy speed up on CW, as well as trying to listen, listen, listen and pull in weak signals. Lately, I feel like I have been listening a lot more through QRN and QSB sigs. So tonight on 14.055 around 01:40 (9/12/16) I had been listening to a station for about 10 minutes, and through QSB and the occasional station providing some maddening tune up QRM, I was able to pull the following out of the signal: CQ CQ CQ XPOTEST DE JF6NBB TEST This was repetitive (like a beacon). Unfortunately, I cannot find a JF6NBB, EOF6NBB, JIN6NBB in any data base. I don't contest but I expect this is a contest or club call, but I cannot find anything about the call sign. I am confident that I have the call correct, but I am really dumbfounded.