[GreenKeys] WU 22-A tape transmitter

[Duncan Brown]

Chris,

As Jim said, it reads the tape in parallel, then a mechanical 
parallel-to serial converter combined it with the data from 2-4 other 
tapes to produce a multiplexed serial data stream.

We may  have some information on it in the AWA Museum Library, but I 
think the schematic of it is pretty straight-forward. They where 
designed in the 1910-20 period and used up into the 1930-40 period.

73,

Duncan Brown, K2OEQ
USASA  31J30

Antique Wireless Association Museum Asst. Curator, Commercial Equipment
(also Chief TTY operator & repairman)
http://www.antiquewireless.org/
http://www.antiquewireless.org/phase-1-virtual-tour.html



On 21-Sep-15 11:14, Chris Elmquist wrote:
> Hi Guys,
>
> Found one of these in someone's basement.  I think they were discussed on
> this list a while ago but I don't recall seeing any hookup or connection
> info,
>
> https://drive.google.com/folderview?id=0B6A73VHTVh23SkZhck9jUDJrSmc&usp=sharing
>
> Do any documents exist for this unit?  Can it be used stand-alone or
> does it need the rest of the TTY to make it go?
>
> The earlier discussion suggested these were 1920-1930 vintage so what
> model Teletype would it have been used with?
>
> I can't do much with a 5-level reader here since I don't have a 5-level
> punch but it's still interesting to me to know how these were used
> (electrically).
>
> 73, Chris NØJCF


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