[RTTY] Intrigued

Tom Osborne w7why at verizon.net
Fri Jan 26 14:47:45 EST 2007


Hi Graham

You were probably copying hellschreiber.  That mode prints the words out as
it scrolls across the screen.  Very old mode, was used back in WWII.  73
Tom W7WHY


> Greetings All,
>
> While monitoring 20m late this afternoon using MixW - there appeared
> on the waterfall a callsign........Yes that's correct ON THE WATERFALL
> - spread out over about 1khz, almost like a picture.
>
> At first I thought I was hallucinating, then a few minutes later it
> rolled across [or rather down] again.this time complete with the MixW
> 'Butterfly' and I grabbed a screen print - which I have out at...
> http://s40.photobucket.com/albums/e208/strathnaver/?action=view&current=iz0ask.jpg
>
> I was just wondering 'how did they do that?' as it clearly requires
> multiple synchronised audio tones.
>
>
> 73 Graham M5AAV
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