The antenna hub is used for mounting a car radio with input for 2 antennas and then connecting the car antenna, but there is only one antenna in the car. Antenna splitters with an amplifier are also often used. The antenna splitter can be used, for example, to use a VHF antenna to receive AM and FM signals for car radios when using a VHF antenna. Suitable for cars where the original car antenna is replaced by a VHF antenna.