[GreenKeys] Model 28 signal lines

[Frank Carraro]

The derailed circuit drawings areavailable at several sites on theInternet.  Without them you can’tget anywhere.   Try a search like“Model 15 printer circuit dwgs”for a start.  That first word shouldbe “detailed”.   T is rite next to R!


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On Tuesday, October 15, 2019, 7:22 PM, w9ddd at tapr.org <w9ddd at tapr.org> wrote:

And to make it more interesting, is it possibly a Wester Union version?

John, W9DDD


> On Oct 15, 2019, at 1:28 PM, B M <iamvirtual at gmail.com> wrote:
> 
> I took a look through the theory & operation manual for the Teletype Model 28 KSR (floor standing model), but I am still confused on where the signal lines in and out are located.  I do see the 2 terminal strips at the back of the cabinet with labels from 1-20 and 21-40.
> 
> I have a few questions
> 1. which terminals are for the signal lines in?
> 2. which terminals are for the signal lines out?
> 3. how do I determine that the unit is still set to use 60ma loop?
> 4. will 48v @ 60ma be sufficient to drive the model 28 KSR?
> 
> As you can see, I am not familiar with Teletypes. 
> 
> Any help would be greatly appreciated!
> 
> Thanks
> 
> --barrym
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