Quote Originally Posted by ReserveBum View Post
I have a Madstad and mount it on the inside of the base. Reads fine.
I always wondered if the transponder would work in that position. I have a Garmin GPS mounted to the inside of the inner base of the Madstad. Maybe I can somehow squeeze the transponder in with it. Usually I just hold it in my hand when I'm rolling through a toll lane, but that's a pain in the butt and one day I'm going to drop the damned thing.