Gresham Worldwide, Inc., engages in the design, manufacture, and distribution of purpose-built electronics equipment, automated test solutions, power electronics, and supply and distribution solutions, as well as radio, microwave, and millimeter wave communication systems and components. It operates through the following segments: Radio Frequency Solutions, Precision Electronic Solutions, and Power Electronics and Displays. The Radio Frequency Solutions segment consists of Microphase in Connecticut. The Precision Electronic Solutions segment refers to two subsidiaries (Enertec in Israel and Microsource in California) and one division (Giga-tronics Division). The Power Electronics and Displays segment deals with two subsidiaries, namely Relec and Gresham Power, located in the United Kingdom. The company is headquartered in Scottsdale, AZ.