Internal car antennas: These auto antennas are fitted inside the auto, on the dashboard, windshield or the trunk of the car. This effectiveness of the reception of this antenna is not on par with other antennas. Many internal antennas are necessary to boost the good quality of reception of radio signals.
External automobile antennas: These antennas, in the form of telescoping metal or fiber-glass poles, are attached to the exterior of the auto particularly on the hood, rear or the roof of the automobile. The top quality of radio signals received by these movable antennas, is greater than those that are fitted internally. Though the primary disadvantage of this antenna, is that it is prone to accidental damage.
Power car antennas: These are antennas that are developed to overcome the weakness of external auto antennas. These are placed in a compartment or housing attached to the exterior of the automobile. When the automobile ignition is switched off, they do not hang in the air like how external antennas do, and hence, are not prone to damage. The power automobile antenna mast is ejected or lowered, by an electric motor connected to it. When the auto ignition is activated to ‘on’ by inserting and turning the key in it, the electrical motor controlling the antenna is activated and propels the power automobile antenna mast up, and out of it is housing. The power car antenna when ejected, can receive radio transmissions. When the ignition switch is set to ‘off’, the electronic control signals the electrical motor, to lower or collapse the antenna mast. Therefore, the power vehicle antenna is safely tucked inside the protective compartment, when it is not in use.