[GreenKeys] AP Teletype Maintenance - GreenKeys Digest, Vol 154, Issue 13

[Jim Taylor]

Thanks for posting those documents Jim.  I was actually employed by the 
AP at that time (1966-1974).

I think I still have a couple of those SD-200 driver cards around here 
somewhere.

Jim, K9JT

On 11/20/2016 11:07 AM, greenkeys-request at mailman.qth.net wrote:
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>     1. Re: Associated Press Teletype maintenance (Jim Haynes)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 19 Nov 2016 20:32:01 -0600 (CST)
> From: Jim Haynes <jhhaynes at earthlink.net>
> To: Sheldon Daitch <SDAITCH at bbg.gov>
> Cc: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net>,
> 	ab5gg at hotmail.com
> Subject: Re: [GreenKeys] Associated Press Teletype maintenance
> Message-ID: <alpine.LFD.2.20.1611192014240.4745 at localhost>
> Content-Type: text/plain; charset="us-ascii"; Format="flowed"
>
> 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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> End of GreenKeys Digest, Vol 154, Issue 13
> ******************************************
>