[RTTY] RTTY & Digital Interference problems

[David Cole]

A note Joe:

A bit ago you were saying that these modes could not be heard...  Now we
can even ID them by ear...  

-- 
Thanks and 73's,
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On Mon, 2015-01-05 at 20:41 -0500, Joe Subich, W4TV wrote:
> Neither JT65, JT9, PSK31, PSK63, nor PSK125 sound like "random noise".
> All have a distinctive "sound" and are clearly identifiable on a
> waterfall or spectrum display.  It should even be possible to make an
> informed guess as to the mode just based on the frequency - the
> "center of activity" for each digital mode is published just about
> everywhere except in the contest rules.
> 
> 73,
> 
>     ... Joe, W4TV
> 
> 
> On 2015-01-05 8:19 PM, Jeff Stai wrote:
> > On Mon, Jan 5, 2015 at 12:34 PM, Joe Subich, W4TV <lists at subich.com> wrote:
> >
> >>   ... and what is a "hoot" about good operating practice or have
> >> RTTY operators forgotten their manners?
> >>
> >
> > "QRL? in their mode"
> >
> > In other words, given that all digital modes are permitted within the
> > spectrum allocated to digital modes, and someone may be listening to a
> > transmission I can't hear, and if I can't hear it I don't know their mode,
> > you basically suggested that in order for me to begin transmitting a
> > digital signal, by good operating practice I should toss out a QRL? in all
> > possible modes first - presumably including modes that require proprietary
> > modems costing thousands of dollars. That's kind of a hoot.
> >
> > To bring it back, if we all took the position and "if it sounds like more
> > than random noise it is a signal" then if I send out a RTTY QRL? and you
> > make a noise in JT-something (guessing I sent a QRL? because what else
> > would I do?), I should be able to take that as a "yes" and move on. Good
> > manners.
> >
> > 73 jeff wk6i
> >
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