Factory Samsung dvd/cd/fm. Station selection very weak. At the same location, the car and truck radios work pretty good. What kind of fm antenna did PC use? The wire from the back of the unit goes up in the ceiling, so can’t see what is up there? Looking to buy a booster but can’t see one that matches up to the back plug on the Samsung unit. Ideas? Searches only find what looks like a “cord” with a plastic loop on the end used to screw and hold cord up.