[RTTY] IARU and 14100 Beacon QRM from Digital Signals

Jim Rhodes k0xu at iowadsl.net
Sun Oct 1 21:33:06 EDT 2006


Guess you won't hear me at 1275/1445 either. But of course you can't tell what
freq we are listening to on your end.

At 08:15 PM 10/1/2006, John Becker wrote:
>If you dial says 14,002 both your mark and space will be out of
>band.
>
>this I don't understand -  "I myself use 1415 and 1585" - are
>you saying that you tones are 1415 and 1585 ? If so I will never
>ever be able to copy you signal.
>
>At 07:02 AM 10/1/2006, Bill Coleman wrote in part:
>
> >This is also important. It shows that the conflict here arises from
> >ignorance, not from malice. A RTTY operator tunes to what he thinks
> >is a clear frequency, and perhaps checks his frequency dial. If he's
> >running AFSK LSB, and the dial says 14.002, he may think he's clear
> >of the beacon frequency (assuming he's even aware of it). Instead,
> >he's within that 500 Hz passband with both tones. (This assumes he is
> >running the high tones of 2125 and 2295 Hz - I myself use 1415 and 1585)
>
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Jim Rhodes K0XU
jim at rhodesend.net

Experience is the thing you have left when everything else is gone. 


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