[GreenKeys] M28ASR wiring

[Nick England]

I generally like the ones that say something like:
28ASR with LESU13
115vac circuits at top. Loop circuits at bottom.
The terminals at rear are Cxx. This is not a very good scan but I am on my
phone and searching is hard. More later.
https://www.navy-radio.com/manuals/tty/jh/ttyman9/drawings/m28-13.pdf


It depends on the LESU of course, but loop terminals are almost always the
same C

On Fri, Apr 7, 2023 at 2:59 PM Duncan Brown <duncanancy at earthlink.net>
wrote:

> Jeffery,
>
> Thanks, but I l have that document and it is very hard to follow.
>
> I did find some schematics at
> http://rtty.com/development/teletype/model28ASR/index.html which look
> more helpful. (although there are rfreferences to "Notes" which are not
> there.)
>
> Duncan
> K2OEQ
>
>
>
> On 07-Apr-23 14:50, Jeffrey Golas wrote:
>
> I got you fam!
>
> navy-radio.com <https://www.navy-radio.com/manuals/tty/wd/ugc48a-wd.pdf>
> <https://www.navy-radio.com/manuals/tty/wd/ugc48a-wd.pdf>
> <https://www.navy-radio.com/manuals/tty/wd/ugc48a-wd.pdf>
>
> Jeff KC3GJX
>
>
> On Apr 7, 2023, at 2:24 PM, Duncan Brown <duncanancy at earthlink.net>
> <duncanancy at earthlink.net> wrote:
>
>  I'm trying to set up a M28ASR and I need to find the rear terminal strip
> connections for the printer, keyboard, tape reader and aux reperf. The unit
> was from a civilian installation, but is referred to as a "UGC-6" on the
> patch panel.
>
> I've tried to find a basic connection diagram from the documentation on
> Nick's site, but as Nick once said:
>
> *"Sometimes I think the Teletype publications group was run like a
> super-secret govt project - each group wrote about its own little piece,
> but no one knew how it all got connected together.......except for the
> document package shipped with each machine which was always discarded
> within two weeks."*
>
>
> Can someone just give me the rear panel terminal strip connections for the
> i/o's to/from the cabinet?
>
> I will be wiring everything on separate loops.  When I switch from "LINE"
> to "TEST", does everything get put into the one local loop?
>
> Thanks,
>
> Duncan
> K2OEQ
>
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-- 
Nick England K4NYW
www.navy-radio.com
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