How to Convert an AM Car Radio to FM by William Jensen

If your old car has an AM radio, you can obtain more stations and better sound quality by converting it to FM with an FM car radio converter box. These boxes essentially work the same way as digital TV converters: the FM signal comes through the antenna and enters the box's tuner. Then the converter transfers the audio to the car radio through an AM frequency, so the radio simply treats it as a strong AM station. It effectively replaces the tuner, but continues to use the same antenna, receiver and speakers.