[GreenKeys] ST-8000 / ST-8000A to teleprinter current loop interface.

[COURYHOUSE at aol.com]

John  have to solve the same problem  with the  st-8000 we  have  also.  I 
have one of those rs-232/20 mil back box   converters  but they are lo 
voltage and I was told  would   not  work well  with the  15
 
100 wpm  M-15 ?  I did not  know they went that   fast....  is  there any 
youtube video out there.... I would  love to hear  what that sounds like...   
 
Ed #
 
 
In a message dated 3/15/2014 8:18:38 A.M. Mountain Standard Time,  
radiounity at sbcglobal.net writes:

 
Hello to the group,


I'm  starting to pull stuff out of storage as my health is returning, also 
I picked  up that $86.00 M-15 that was on Craigslist.


I  have forgotten how to interface the HAL ST-8000/8000A to a Baudot 
current  loop.  Are the 8000's strictly ASCII serial out?  Was there
A  "Black Box" device that was an ASCII  to 20 mil. converter?  I  suppose 
it could be done fairly easily with an arduino board, but I am  horrible
at  writing any kind of code.


I  have a couple of CV-89A's and a ST-6 to at least copy some ITTY to test 
some  14,15,19 and 28 stuff I want to restore.  I hate to think
about  the working PDP-8 W/2 ASCII 33 ASR's I gave away free.(I was 
supposed to get a  28 ASR in return, but never heard from him again.)


I have a bunch of 100 wpm M-15 gears in  storage somewhere. let me know if 
you are interested. 


I need the following M-15 parts;
Keycap, "CAR.RET" 1 ea.
Keycap, "E" 1 ea.
Spring, Keylever 6 ea. ("U" shaped piano  wire)
Relay, Line (Polar type)


Please let me know what you have W/Prices  and/or wants/needs.


Thanks


John Duggan


KG6EOT



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