[RTTY] RTTY & Digital Interference problems

[Joe Subich, W4TV]

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
>