[GreenKeys] Model 20 keyboard

[Charles Ring W3NU]

jhhaynes at earthlink.net wrote:
> Up to now I have assumed that the Model 20 was a receive-only printer,
> used for monitoring Teletypesetter traffic.  I assumed there was no
> keyboard because Teletypesetter used a rather complicated keyboard
> perforator to handle proportional-spaced material.  Well I've just
> located a manual on the Model 20 and it shows a KSR configuration.
> So yes there is a Model 20 four-row keyboard.  But I'd still bet that
> very few of them were made.
>
>

I've seen at least one and maybe more at hamfests years ago.

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