I do know that the VLA - Very Large Array radio telescope has an elecroinic device usage policy - https://public.nrao.edu/visit/very-large-array/dos-and-donts/#rfi-section - and hours where traffic is not allowed on roads nearby becaue the equipment is easily sensitive enough to pick up the sparks from the very radio noisy spark plugs on the engine and nowadays all the other radio/cell/electronic gear on a car, causing noise in the observations and as I was told a lot of extra annoying data cleanup and longer observing times that they otherwise don't have to do. The VLA is very impressive and worth a visit by the way. Beautiful and ominous.