A roof car antenna is designed to be mounted on the rear of a car roof. Roof antennas for the rear of the car are usually equipped with a built-in amplifier for adequate FM signal quality. When choosing a car antenna, pay attention to whether the new car antenna has a lead-in cable or not. Often, in addition to a malfunctioning antenna, the antenna lead-in cable itself is also damaged. Based on our experience, we recommend always replacing the entire antenna, including the lead-in cable.