[GreenKeys] CY870/UG

W9DDD w9ddd at tapr.org
Mon Nov 19 14:16:02 EST 2018


 From reading the NAVSHIPS for the TT-47, it looks like one of the 28s 
for which I have visiting privileges is in a CY-870/UG cabinet.  I can 
see that the 47 and 47A used the 870 cabinet.  The 47C has the more 
traditional cabinet.  There is no NAVSHIPS for the 47B, so I don't know 
about that version.  Why do I care?  I want to print the most 
appropriate schematic/wiring diagrams in preparation for my next visit 
to the "warehouse".

May I assume that the change from 3-10 point terminals strips to 2-20 
point terminals strips took place with the change from the CY-870?  Or 
was there a mod-kit for the CY-870?

I know, I should be taking pictures of name plates etc.  Turns out that 
of the three machines. it appears to be one from WU, one from Navy and 
the 3rd a Bell/AT&T version.  I was spoiled with my source in the 60s 
being all Bell System machines.

-- 
John, W9DDD


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