[GreenKeys] WU 22-A tape transmitter

[Chris Elmquist]

On Monday (09/21/2015 at 01:58PM -0400), Duncan Brown wrote:
> 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.

Hi Duncan--  your message came in just as mine was going out.  I appreciate
the info.

I will poke around with it for a while and if I can make it go, maybe
I'll bug someone to punch a 5-level tape for me and then I can demo it
to some youngsters (ie, the engineering staff) at work ;-)

Thanks again,

Chris N0JCF

> 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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-- 
Chris Elmquist