Sometimes it would get fainter. Sometimes she'd lose the station. I didn't have any way of making judgments on the way neighbors get along or on the effect of feuds on community living. So I tried to reassure her that it was, indeed, quite possible that the guy downstairs was doing something to her radio. And it was very likely that he wasn't doing it on purpose.
Radios are the most fickle of our electronic companions.
They depend on a source far away for their operation. If something gets in the way, they don't work. It doesn't matter if everything else is hooked up right, if the transistors are transisting and the capacitors are capacitating and the batteries are batting 1,000. No signal, no sound. And drivers who try to stick with the Stones on an FM broadcast know how big buildings and long tunnels can keep them from getting any satisfaction.