[RTTY] getting started again

[Tom Osborne]

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 at earthlink.net>
To: <rtty at 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
>
>
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