[GreenKeys] 28 stock ticker?

[Ken Wiebe]

What was the source of the data being sent to the stock tickers (equipment used, process employed, etc.)?

This has me really curious about 'stock ticker networks'.

-Ken

On Tue, Jul 30, 2019, at 11:48, Jerry Murphy wrote:
> 
> Attached are two picture of the 900 stock ticker that I had. It started life
> as a Trans-Lux machine and had a slack tape control. (The Trans-Lux machines
> were a variant of the regular stock ticker. They printed on clear cellophane 
> tape instead of paper. The tape was run through an optical system and the 
> printed characters were projected on a screen.) I removed the slack tape 
> control and ordered a new cover from Teletype. Several other parts were 
> replaced and I ended up with this beauty. Front labels were available that 
> said either "New York Stock Exchange" or "Western Union." The Teletype 
> nomenclature on the mechanism is LP112TE making it part of the Model 28 line. 
> The ticker was sold some time ago.
> 
> Jerry Murphy
> 
> 
> 
> 
> 
> 
> -----Original Message-----
> >From: "w9ddd at tapr.org" <w9ddd at tapr.org>
> >Sent: Jul 30, 2019 10:32 AM
> >To: greenkeys at mailman.qth.net
> >Subject: [GreenKeys] 28 stock ticker?
> >
> >I always assumed a newer stock ticker from Teletype would be based on the 28 tape printer. I was wrong. Looking at http://www.navy-radio.com/manuals/tty/jh/bsps/bsp/570series/573-140-100TC.pdf, I discover a different approach.. It's a 6 level 135 baud device the uses a type box instead of the wheel like on a normal tape printer. Also it types on 1" tape. Of course it has fractions as well as some other special charters.
> >
> >Wonder if anyone ever saw such a beast?
> >
> >John, W9DDD
> >
> >
> 
> 
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> *Attachments:*
>  * Teletype - 900 ticker A1.JPG
>  * Teletype - 900 ticker E.JPG
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