Abstract: There is disclosed an antenna including an accurately formed whip member and an accurately formed loading coil one end of which is connected to one end of the whip member and the other end of which is connected to a single connector. The length of the whip member and its diameter and any associated metallic connector are selected to give a predeterminedly accurate capacitive value. The loading coil has a predeterminedly accurate inductive value such that the loading coil and whip member have a net accurate inductive value which is connected to a predeterminedly accurate capacitor for matching the impedance of the antenna to the conductor, coaxial cable for example, from the transmitter. The capacitor, a single stub connector, the end of the coaxial cable and the necessary connections are epoxy encapsulated in a base housing.The connector at the end of the loading coil is attached to the single stub connector in the base to provide the only connection necessary for the antenna to become operative.

Abstract: A hermetically sealed mobile antenna base containing all of the components necessary to proper antenna functioning with the exception of the loading coil and antenna whip for vehicular application is disclosed. A single connector screw extends outwardly from the base casting and is insulated therefrom by an insulating washer. Interiorly of the base casting an impedance matching capacitor is disposed with one lead connected to the connector screw and the other lead connected to ground. The coaxial cable is led into the base casting and has its center conductor connected to the connecting screw and its ground conductor connected to the casting. The complete interior of the base casting is encapsulated with an epoxy compound. Spaced apart connection ears extend from one side of the base casting providing for attachment of the antenna base to the vehicle.