I don't think the signal source being voice information (compared to text or telemetry) is irrelevant, and the actual definition of HF DV in regards to FCC regs as a data vs voice mode IMO is ambiguous. I have been casually searching for a reference to clarify with no joy yet. The reference link Operating Tips you linked in post #39 indicated DV activity on 20m, 14.236 USB. That would suggest it is being considered a voice mode. If DV is to be classified as a data mode, not voice, that presents an equally bad situation for the proposed DV QSO Party. According to FCC Amateur band charts, data modes are prohibited on the event sponsor suggested operating frequencies for 80, 40, and 10 meters, as well as on 14.236 USB as suggested. It can't be both ways, voice AND data and if so, that's another regulatory train-wreck.