[GreenKeys] keyboard for 28

[John Beckman]

I have two questions for you knowledgeable gents. I've acquired a 
beautifully clean 28RO. I wonder if you could direct me to a source 
where I might buy a keyboard for it. And, is it even feasible to add a 
keyboard, and what would that entail? (Like, how much work!)
Is the keyboard a separate system that is just in series with the 
printer and the loop? In other words tell me if I'm an idiot for trying 
to make a KSR out of an RO.

Thanks much and 73
John Beckman, W4BTX