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

John Duggan radiounity at sbcglobal.net
Fri Mar 14 11:42:25 EDT 2014


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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