If "QRL?" in CW is too retro, we could specify a sequence of eight 1
khz tones of 250 ms duration separated by 250 ms to convey the "is
this frequency in use?" message. It would be distinctive in a
waterfall display, and could easily be recognized by application
software.
73,
Dave, AA6YQ
--- In [email protected], "jgorman01" <[EMAIL PROTECTED]> wrote:
>
> The problem here is that if the FCC drops Morse Code, they won't be
> able require CW be used for this purpose. You'll also have folks
that
> are adamant against having to learn Morse Code for this purpose.
>
> Also, I usually don't listen to the frequency, the waterfall
suffices
> for that. Recognizing a QRL in CW may not work well in this
situation.
>
> Jim
> WA0LYK
>
> --- In [email protected], "Dave Bernstein" <aa6yq@>
wrote:
>
> >
> > In addition, I sincerely doubt that a RTTY station, for
instance,
> > will recognize the CW QRL request and reply in 30 seconds.
> >
> > >>>Most ops would quickly learn to recognize "QRL?" in CW.
Replying
> > requires nothing more than hitting a couple of keys, whether on
an
> > KSR-33 or a keyboard.
> >
> > It would be much better if the automatic station could respond
to a
> > standard QRL signal during receive periods (wasn't it you that
> > suggested that to me at some time in the past?).
> >
> > >>>Yes, I did; the two techniques are complementary.
> >
> > 73,
> >
> > Dave, AA6YQ
> >
>
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