locked Re: TU; messages in RTTY RU

Steve Kavanagh

That's true Reino.  A QSL is valid without the final acknowledgement, since callsigns and some additional information have been confirmed by that point.  But you can't be sure until you receive a QSL card or equivalent.  Indeed, I have received many QSLs on LOTW now from the RTTY RU for QSOs with the minimum information exchange as you mentioned.

However, in a contest, you need to be able to know (almost) for sure if you have worked someone or if you should call them again later to ensure you get the points/multiplier.  WSJT-X contest modes do not yet meet that requirement in the standard sequence, with this rare exception of the TU; messages.

Steve VE3SMA

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