I gather from inputs received off-line that this problem has been around
for a while.
I did fix it, sort of. I found that putting some extra CTRL-S
characters ahead of the portion which I wanted sent more slowly (approx
30% slower) worked pretty well with speed set to 29 wpm. i.e. The error
in resetting to the higher speed after the 20 wpm part was small enough
that I could auto-cq for a longer period - long enough to be worthwhile.
73, Jim VE7FO
Jim Smith wrote:
Sometimes I want to send CQs with my call sent once at normal speed
and once at a slower speed. The idea being that, on Sunday afternoon,
the good ops will know what speed I'm comfortable at and, at the same
time, to put out the welcome mat for the slower ones.
So, I put the following into the F1 message memory:
CQ CW MEMORY F1 = CQ TEST DE \
<13><13><13><13><13>\<06><06><06><06><06> NST >
This is supposed to slow the 2nd instance of my call down by 30%, send
it, and speed up again to the original speed (not by 30% - speedup has
to be 43% of the slower speed).
It actually speeds up again to a speed a little faster than the
original speed. With auto-cq running the CQ starts running faster and
faster each time it is played. Sounds a little comical unless you're
actually in a contest.
It appears that there may be some rounding or truncation errors in the
speed adjustment (is this integer arithmetic?) and that it may not be
possible to get back to exactly the same speed.
But then, I routinely hit PgDn a few times for slow speed callers and
PgUp the same number of times to get back to normal speed and have
never noticed this problem when doing that. i.e. I always appear to
end up at the same speed. It's possible, of course, that the same
thing is occurring but over a long enough period of time that I don't
notice.
I tried <03>SPEED---<04>\<03>SPEED+++<04> but it seems that the
commands are executed first before any characters are transmitted,
thus cancelling each other out.
I don't want to slow down to a specific speed because I routinely
adjust my normal speed to suit conditions. I would like the slower
speed to reduce by the same ratio.
Also, the change in speed produced by 5 CTRL-S characters is less than
the expected 5x6% = 30%. Hmm... maybe each 6% acts on the new speed.
e.g. if speed = 30 wpm one CTRL-S would produce 28.2 wpm, the next one
would produce 6% of that and give 26.5 and so on until 5 of them give
22 wpm. Well, I guess that makes sense.
Any ideas as to how I can do the slow-down/speed-up thing without my
CQs getting the bit between their teeth and galloping off into the
sunset?
73 de Jim Smith VE7FO
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