All of Rik's standards look useful to me, but it is also essential to specify in the standard that the dash should be the higher (or lower) frequency. This is especially important if KK and RR are to be sent as part of the procedure, as a K is an upside down R !!

Mike is right, that is the one thing I forgot to mention : 'dash' should be
the higher frequency, 'dot' the lower frequency.

Regarding 'CT' : our CQ wil do the job too, during a QSO it might be
usefull to start transmission with 'CT' but so far I had no problem in
'decoding' DFCW signals without this. Anyway, for those who like 'CT'
(-.-.-) I will add it to the 'extra characters' in the QRS software.

73, Rik  ON7YD