Speaking from little experience, and being a bit new on the forum, I carefully, and with low voice - inform, that my Sony minidisc (forgot the model, but one of the old ones) autoradio does it. It works perfectly, and I think it should be doable, to detect where you are (ie take time from the ten stations autosearced, and see what time the majority of the stations provide). One downside though: Watch out for primitive stations, broadcasting with advanced equipment, they do not know how to control. You may see some funny hrs broadcasted to your display (How come this is more often in french spoken areas?)