The antenna works on a simple principle. The passage of the radio waves over the antenna’s mast produces minute electrical charges. Depending on the length and other details of the antenna design, particular radio wavelengths are captured more easily than others. The design of a car’s radio antenna takes into account the differing frequencies of the AM and FM bands to provide good reception with either. For the connection to the receiver, most car antenna transmission lines use a standardized “Motorola” style plug. Some car models employ different connectors, but adapters are available in the event the car radio or antenna is replaced. Standard car radio antennas are not designed to operate with some other specialized broadcasts, particularly satellite radio transmissions such as XM or SIRIUS. You’ll need a specialized antenna for those services. Writer Bio
