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


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