Antenna parameter measuring apparatus; Antennae; Antennae filters; Antennas; Antennas for radio, for television; Antennas for wireless communications apparatus; Car antennae; Dish antennas; Electronic combiners for connecting antennas and receivers; Microwave antennae; Parabolic antennae; Television antennas; Vehicle locating, tracking and security system comprised of an antenna and radio transmitter to be placed in a vehicle; Automatic switching apparatus; Change-over switches; Computer hard...