[GreenKeys] What’s this?

[Dave Horsfall]

On Sat, 3 Aug 2019, Paul Heller wrote:

> I remember when I was just starting out with this hobby - one of the 
> first machines I got was a 28 tape punch. I turned it on and it just 
> punched out tape. I did even not know what a loop was at that point, and 
> did not have a working TU yet. I had not yet met Jack Hart, my eventual 
> mentor (Elmer in ham speak).

As one with an engineering background (but having only ever operated a 
glass RTTY) it's a miracle that these things work at all!  I think they're 
best described as a mechanical shift register at heart...

-- Dave VK2KFU