Front panel switches - what did they do?

Jon Elson elson at
Wed May 25 20:00:18 CDT 2016

On 05/25/2016 12:41 PM, Lawrence Wilkinson wrote:
> Card (paper) ones did exist! But I suspect they were only 
> for emergency FE use.
> It may be that the mylar ones were not manual-punch 
> friendly, so you could
> make a duplicate to use while you waited for the proper 
> spare to arrive.
> There's a photo of a mylar card at 
The Mylar cards were VERY thin.  I always assumed they were 
attached to a slightly thinner than usual paper card for 
punching, then separated from the paper to put into the ROS 

That picture you linked to is the best photo I've seen of a 
/30 ROS card!


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