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@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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