[GreenKeys] Kleinschmidt, Morkrum, M-K, M14-TP, and other early stuff

[jhhaynes at earthlink.net]

On Wed, 5 Apr 2006, Charles Ring W3NU wrote:

> Why would anyone want a new Model 12 as late as 1943? Parts and support sure, 
> but new machines? The 15 had to be better, cheaper and more reliable. Were 
> 15's not entirely compatible with systems designed around 12's?
>
Model 12 was parallel input, and therefore was used in some time-division
multiplex systems that were probably still in use at that late date.