On 14 Aug 2004 at 19:27, John Andrews wrote:
Mal's comments aside, "QRSS" arose as a way to differentiate CW described in
words per minute from the slower variety best described in seconds per dot.
"QRSS3" unambigously meant CW sent at 3 seconds per dot. There is nothing
official about it, and no attempt has ever been made to incorporate it into
the amateur radio lexicon. I believe that the discussion originated within
the U.S. "lowfer" community, but I'm sure that Alberto will jump up and
correct me if I'm wrong.
I originated the term QRSS many years ago in an e-mail to
this group. It followed the syntax of the existing 'QRPP'
which meant 'lower power than conventional QRP'. It was
necessary as we were constantly typing "extremely slow
Morse" and other long phrases.
The helpful addition of the number to denote the dot length
came much later when slower speeds became popular for
working DX, but I don't know its origin.
Rik, ON7YD, and others have used the generic term Visual
CW which can also include DFCW.