How can I make my FM radio antenna stronger?

The coverage of broadcasting in different frequency bands is different. The FM frequency band is an FM signal, and its coverage area is relatively small compared to other frequency bands, and the coverage area is about a city. The AM band is an FM signal, which refers to an intermediate frequency signal. Its coverage area is slightly larger than that of the FM frequency. The coverage is about the provincial level. The SW band is shortwave. Compared with FM/AM, its coverage area is the largest and its coverage can reach the world. , Different coverage areas are due to different propagation methods, FM is a straight line propagation, the earth is round, so it cannot be received after a certain distance. Short waves can be reflected through the atmosphere, so they can cover the world, but there is no FM AM Antenna, FM AM Radio Antenna ,FM AM Antenna for CAR ,Fm AM Antenna Marine ,FM AM Antenna for home Stereo, the working signal of the radio will be unstable, choosing a good radio antenna can make you hear better sound quality