[GreenKeys] 7.42 vs. 7.0 machines/

[Jim Haynes]

On Sun, 2 Dec 2018, Nick England wrote:

> Yes at some point, many of the Navy's M28 machines came in both 7.00 and
> 7.42 versions - I don't know why unless it had something to do with some
> piece of crypto gear??
> 
> If you have sync pulse transmission, I think it is a sure bet that was a
> military machine. Did anyone else use that, Jim?
> 
I can't imagine anyone else used synchronous pulsed except the military or
at least government.  But I don't know for sure.