[GreenKeys] Curious what folks winter rtty projects are.

[Eric Moore]

4 SEL 810As as part of 2 NGPL TCS systems.

I only have 2 interfaces/teletypes, one is not in the pic

https://youtu.be/-CaUafVqnbw

Previous NGPL TCS I repaired and then donated to SAMSAT


On Wed, Nov 26, 2025, 5:47 PM Jones, Douglas W <douglas-w-jones at uiowa.edu>
wrote:

> From: Eric Moore <mooreericnyc at gmail.com> -- Wednesday, November 26, 2025
> 5:24 PM
> > Working on the teletypes for these guys when I have spare time.
>
> What are "these guys"?  Two banks of racks, it looks like 3 of them have
> high-speed paper tape readers.  (I love that high-speed reader mechanism, a
> capstan that spins at high speed, a solenoi-activated pinch roller, and a
> solenoid activated brake.  It can read at a phenominal rate (photoelectric)
> but it can also read a character at a time.)  Plus just one Model 33 in the
> picture.
>
>               Doug
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