[GreenKeys] Associated Press Teletype maintenance

[COURYHOUSE at aol.com]

Indeed!  I printed  these and also the material  from  Wayne  on disabling  
stuff on 33 and 32  today and put it in our  tty action book.
 
I am interested in the  cards  that are  in the AP   unit... motor  control 
and also a loop  driver?  confirm?
thanks Ed#
 
 
In a message dated 11/20/2016 10:58:09 A.M. US Mountain Standard Tim,  
drlegendre at gmail.com writes:

Jim,  


Thanks much for providing those documents. Always interesting to know  what 
was going on back in the day, and there's no such thing as too much  
documentation!


On Sun, Nov 20, 2016 at 11:35 AM, Ed Sharpe Archivist  for SMECC via 
GreenKeys <greenkeys at mailman.qth.net> wrote:


JIM - WHAT ABOUT  UPI? DID THEY STAY AT  60 WPM?
 
THX  ED#
 
 
 
 
In a message dated 11/20/2016 10:21:28 A.M. US Mountain Standard Tim,  
jhhaynes at earthlink.net writes:



 
A few years back I was given a M15 machine that had  apparently been
abandoned by AP at a radio station and taken home by  the station
engineer when he retired.  Two documents came with it,  which I have
attached.  One is pretty clearly aimed at maintenance  people with some
training, but the other calling for a change to 50  baud gears seems
to be aimed at the station personnel.  Too bad  the letter of transmittal
is not dated.  In any event when I got  the machine it was still geared for
45 baud.  Maybe the speed  change never took place in this neck of the
woods.

The machine  in the pictures appears to have the Teletype Corp. solid state
selector  magnet driver replacing the polar relay.

It's curious that they  give increased speed as the reason for the
change, yet the change from  45 to 50 baud produces only a modest increase
in speed.  They  could have gone to 75 wpm gears for the 15s and got
more speed out of  them.

Something else I've been meaning to ask about - this machine  like a number
of others I have seen had the "Associated Press" placard  on the front of
the cover.  In my youth when I hung around  newspapers and radio stations
watching the Teletype machinery I don't  recall those placards being on
the machines.  My guess is that  they came into use in connection with
television stations broadcasting  pictures of their news rooms and all
the different wire service  Teletypes they had.  Each wire service then
needed to show its  presence among its competitors.

Another curiosity about this  machine is that it was not on a Teletype
Corp. table, but on a homemade  table, made from the kind of steel angle
stock sold at hardware stores,  and plywood.  And there was a sticker on
the table with  instructions for setting a timer clock; so apparently
they had a clock  to turn the machine on and off at certain times of  day.



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