Well, I guess you COULD do it that way.
Here's a better way though:
http://lists.contesting.com/archives//html/RTTY/2007-11/msg00131.html
Dave Hachadorian, K6LL
Yuma, AZ
----- Original Message -----
From: "Lee Buller" <k0wa@swbell.net>
To: "RTTY Reflector" <rtty@contesting.com>
Sent: Wednesday, February 13, 2008 9:37 PM
Subject: [RTTY] Crazy Idea for FSK
>
> I'm not new to RTTY, but I have just renewed my interest
> in the mode over the past two years. I just joined this
> reflector.
>
> One of the issues I find with RTTY is the lack of FSK
> through software. Yes, I know that MMTTY does do FSK, but
> I am not in love with the way they do it. You have to
> have the RS232 port or the LPT1 ports to do it and some
> CPUs just don't have them anymore with the USB port taking
> things over.
>
> Here is the crazy idea....a reverse terminal unit. How
> about decoding the tones coming out of the soundcard in
> AFSK and turning them into to switched pulses. Now I am
> not an electronics engineer or even close, but that would
> solve the problem of FSK....just demod the output of the
> soundcard and then use that on the FSK line of any rig.
> One could do this with a couple of 567(?) decode chips are
> what ever is on the market at this time. Heck, I think
> you could do it with one chip. Use an optoisolator to key
> the rig. FSK!
>
> Anybody like the idea or is it just crazy?
>
> Lee - K0WA
> "Think out of the box"
>
>
> In our day and age it seems that Common Sense is in short
> supply. If you don't have any Common Sense - get some
> Common Sense and use it. If you can't find any Common
> Sense, ask for help from somebody who has some Common
> Sense. Is Common Sense divine?
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