Microwave power amplifiers; microprocessor-based controllers for coordinating and supervising instruments used for electromagnetic compatibility testing; electronic noise emitters and low noise amplifiers for electromagnetic compatibility testing; antennas; [ test cells, namely, enclosures for use in testing electronic equipment and electronic components for electromagnetic compatibility; ] electric current conducting devices, namely, RF connectors; RF directional couplers; RF power attenuators; RF impedance matching transformers; coaxial cables; electromagnetic waveguides; adapters for connecting coaxial cables to waveguides; RF power meters; power sensors for use in RF power measurements; RF electric field generators; combination electromagnetic compatibility testing packages, each including a [ test cell and a ] radio frequency power amplifier; electromagnetic field immunity and emissions testing software; radio frequency field probes, and stands, clamps and fiberoptic cables for use with field probes