[GreenKeys] Re: Fw: Teletypewriters, part 2

[Don Robert House]

Jim,
Some of the NADCOMM folks are not members of GREENKEYS.
Thanks for reminding me about the SOTUS.  We also had a system at the 
Williams Brothers Pipeline called SCATS the machines used rotary 
dials.  I think it was Selective Calling Automated Teletype System. 
The last I recall of the Teletype electronic selective calling or 
STUNTRONICS.  I also remember some other systems like the 8A1 and 8B1.

Don



At 5:17 PM -0600 11/01/2003, jhaynes@alumni.uark.edu wrote:
>I'm not sure why this is going to a select list rather than on greenkeys,
>but I'm glad to be getting it.  As some of you may know my "area of
>research" is electromechanical switching systems.  Some of what is coming
>across is new material to me.
>
>For the 81D1 and earlier systems the station selector was the SOTUS -
>sequentially operated teletypewriter universal selector.  This was a
>machine that could detect individual characters or sequences of characters
>and close a contact. 
>
>For later systems I assume the Model 28 stunt box was used, since it had
>all the capabilities of the SOTUS built into the printer. There
>was a Model 28 replacement for the SOTUS, called the Model 28 sequential
>selector.  It was basically a typing unit with the front plate mechanism
>removed.
>
>I heard some customers objected to using the Model 28/35 stuntbox for
>station selection.  They didn't like the printer sitting there making
>noise but not printing anything.  This didn't seem to bother the F.A.A.,
>who were one of the first big customers for Model 28 selective calling.
>
>
>
>--
>
>jhaynes at alumni dot uark dot edu