[GreenKeys] A Glass Teletype?!

[Don Robert House]

Model 40 and 45 equipment had several problems...
1. Too expensive
2. Too much heat causing premature failures
3. Too many different models, all with very special application  
software/firmware.
4. Lack of using standard industry components (Teletype made many of  
their own integrated electronics)
5. The printers used a special common language that was adapted to  
what ever the customer used... clever, but difficult on maintenance.

Model 40s were actually used on the refit for the USS New Jersey.

The Model 54 and above were made overseas and are a different animal  
entirely.  They are fairly reliable terminals. However with age they  
tend to keep loosing their settings and have to be reprogrammed.

Don



On 12 Jan 2007, at 1:04 PM, telegrapher at att.net wrote:

If you look carefully at the bottom right front edge of the base  
you'll see a 4 digit number, 4540 or 4456 or something like that.   
That's the actual model number of this item.  It is ex-AT&T that we  
used back in the late 80s through the 90's time frame.  The Phone  
factory as well as other outfits used them by the thousands and there  
might still be some in service.  Some were mono and some were color.   
I wouldn't invest in one unless you has the specific equipment to run  
it.  Seems they had particular software that was supplied by the  
controller.  I don't remember all the specifics on them.

They were pretty reliable though when operated with the right  
equipment as was the case with most all AT&T stuff from that time  
frame and previous years.

Larry
W0OGH


Eugene Hertz wrote:

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