[GreenKeys] M28ASR wiring
Duncan Brown
duncanancy at earthlink.net
Sat Apr 8 10:16:36 EDT 2023
Firefox has its own pdf view, but it apparently doesn't like the UGC-6 pdf.
As john said, downloading the pdf first, then opening it with Adobe
works. Looks like a good schematic
Thanks,
Duncan
On 08-Apr-23 01:09, Paul Heller wrote:
> Hi Duncan,
>
> The link for UGC-6 does not give me a blank page. I see a wiring diagram.
>
> Paul
> W2TTY
>> On Apr 8, 2023, at 3:09 AM, Duncan Brown <duncanancy at earthlink.net>
>> wrote:
>>
>> 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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>>
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