What mode/submode is FT4? My confidant Julian Assange assures me that the ADIF keepers unanimously agreed (at least a week ago) that FT4 is an MFSK submode. For some unknown reason, this has been kept a closely guarded secret. Even the omnipotent/ubiquitous Google can't find any 'ADIF originating' documents promulgating this edict. The original unanswered question remains - What mode/submode is FT4? SeventyThree(s).

PS. I'll wait for the definitive word on FT4 before asking 'and why is FT8 so special?' question.