Diamond Antenna and Microwave Corporation and its affiliate company Diamond-Roltran, LLC, are located in one facility 40 minutes northwest of Boston.

Since 1956, Diamond Antenna has delivered precision microwave rotary couplers for use in radar and satellite communication antennas. Experience with the exacting tolerances necessary for microwave signal transfer is the basis for Diamond’s core competence in precision rotary component design and manufacture.

In 2001, Diamond-Roltran was formed to enter the next-generation slip ring business. Roll-Rings represent an extension of Diamond’s core competence in precision rotary components. This high performance technology enables unmatched rotary electrical transfer in those applications that require high power, low noise, and long life.

Independent ownership assures only the best in customer service. Diamond's motive is to assist the customers, with rotary components that achieve reliable performance in their systems. Diamond does not produce subsystems in competition with its customers; its objective is to concentrate effort in producing excellent electromechanical rotating components and delivering customer satisfaction.