This is an attempt to narrow the field of possible signals when trying to identify an unknown. There are many signals that remain unidentified. Yup - still there, didn't know where else to stick this. Most decoders say they can decode morse but fast machine generated or slow, uneven hand generated morse can be difficult to decode clearly. CW Morse code still used by the Amateur community and Marine operations.
Speed varies depending on whether hand generated or machine generated.
SWED-ARQ Swedish Adaptive simplex ARQ used by Swedish Diplo services, typically 100 bd. Able to change mid transmission, depending on conditions, giving SWED-ARQ its adaptive capability. The most common ARQ signal used by Amateur, Marine and some Gov. Diplo services, typically 100 bd. The most commonly heard mode is the 228.7 FSK system and a 7 tone 240 bd burst ARQ mode. Ed. for more information.