Boy, that's a tough one. I used one of those years ago, but forgot more
than I now know. The loop supply needs to be about 100 volts DC at 60ma.
You need a meter to be able to set the current right. The Hal ST-6 used to
have a RS-232 port to connect it to the computer. Other than that, you
need some sort of opto-isolator to keep the loop voltage out of the
computer.
If you have a computer already, the easiest way would be to download MMTTY
and use the sound card in the computer. I would say probably 99.9% of the
RTTY'ers are now using sound card setups. With all the freeware out there,
it is a simple matter to get on RTTY. It would be a lot easier than trying
to use the model 15. An interface is really simple to build--some plugs, a
transformer and a 2n2222 transistor is about all it takes. 73 and GL
Tom W7WHY
----- Original Message -----
From: "julian harris" <julian.harris@earthlink.net>
To: <rtty@contesting.com>
Sent: Tuesday, June 28, 2005 4:08 AM
Subject: [RTTY] getting started again
>I lost everything in hurricane IVAN. I have a model 15 but no books or
> memory of how to set up the 60ma loop. Can anyone send me a schematic or
> short drawing on how to hook up to run a local loop? Once I get machine
> running got any info on how to get it on the computer?
>
> Thanks , I have no books or anything but the machine .
>
>
>
> 73 butch WA4WKL
>
>
> _______________________________________________
> RTTY mailing list
> RTTY@contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
>
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