I was listening to some stuff last night on 40M, and it was clearly 500 Hz wide and about 16 discrete tones, but it was not Olivia and I couldn't find anything else that would decode it either. Tried Contestia and RTTYM and various settings of Thor and DominoEX. The signals looked and sounded a bit different from Olivia - with Olivia the spots on the waterfall seem to be more or less random, whereas with the mystery signal they seemed to be more clustered around a frequency a little below the center of the group. And seemed to have more of a pattern to them.
Jim W6JVE
