My old cab one have a 3mm port hole on top across from the antenna. Just received my 990 cab-2 an it have the same size hole. What is it for. Pete
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I believe that's a throwback to connect the old Lionel BRS (Big Red Switch), the giant button that repeats the last command. That's what the same one is for on the CAB1.
I've never used the BRS, but I believe that's what it's there for.
Originally Posted by gunrunnerjohn:
BRS (Big Red Switch)
That's what we used to call the on/off switch on the IBM PC's. It was how you got going again after a complete lockup and crtl-alt-del get you out of it, use the BRS 
