I don't *know*, but it looks from the signal description that FM Hell would
probably have that sort of output on a waterfall.
In FM Hell (sorta like PSK Hell) the information is transmitted by "by shifting
the frequency of one tone."
I can also image a new mode that uses waterfall displays for output, where
the "pixels" are represented by the pitch/frequency of an audio signal.
Whatever, it should be interesting.
I've got an email into IZ0ASK to ask him how he did it.
73 de Donald
> Date: Fri, 26 Jan 2007 19:26:35 +0000
> From: Graham Ridgeway <m5aav@btinternet.com>
> Subject: [RTTY] Intrigued
>
> 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¤t=iz0ask.jpg
>
> I was just wondering 'how did they do that?' as it clearly requires
> multiple synchronised audio tones.
>
> Date: Fri, 26 Jan 2007 11:47:45 -0800
> From: "Tom Osborne" <w7why@verizon.net>
> Subject: Re: [RTTY] Intrigued
> To: "RTTY" <rtty@contesting.com>
> Message-ID: <007901c74182$da9d6310$1f12fea9@Tom>
> Content-Type: text/plain; format=flowed; charset=iso-8859-1;
> reply-type=original
>
> 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
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