[GreenKeys] M28ASR wiring

[Duncan Brown]

Nick,

I found that "m28-13" drawing on RTTY.COM.  It is relatively easy to 
read, especially the way they separate the AC & DC circuits. There are 
notes referenced on that drawing, but not on the drawing. Is there 
another page that goes with it?

The link for the UGC-6 you sent me 
https://www.navy-radio.com/tty/asr/ugc6-schem-01.pdf just gives a blank 
pdf page.

Thanks,

Duncan
K2OEQ


On 07-Apr-23 18:04, Nick England wrote:
> 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> <mailto: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 <http://www.navy-radio.com>
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