CPI Essco

Established in 1991, Renaissance Electronics Corporation is a manufacturer of radio frequency and Microwave Subsystems and Components for the avionics, defense, industrial, medical, wireless, consumer and space industries. It provides a wide range of products, including ferrites, isolators, circulators, coaxial switches, switch matrices, fixed attenuators, transmitter combiners, and power combiners and dividers. The company also manufactures receiver multicouplers, integrated assemblies, wireless transceivers and products for base station applications. It provides a variety of base station products that include repeaters, filter combiners, duplexers, triplexers, and local area network and multiband combiners. In addition, the company offers online shopping services. Renaissance Electronics Corporation is located in Harvard, Mass.

Massa engineers and manufactures sonar and ultrasonic products for use in the ocean, air and fluids. We are the eyes and ears for naval ships and submarines that protect the U.S. coastline with our undersea technologies. Founded by the man who pioneered the field of electroacoustics more than 70 years ago, Frank Massa, the company maintains family ownership and leadership. Our products are for sale in commercial or industrial markets, and to the military. We are set apart by our ability to solve problems in various fields and environments with our electroacoustical expertise we often tailor our designs to fit customer needs when applicable. Massa is ISO 9001:2015 certified, and has been awarded over 165 U.S. Patents in sonar and ultrasonic technology.

Communications Power Industries (CPI) Radant Tech Division Inc in Stow specializes in providing a wide range of microwave, radio frequency (RF), power, and control solutions for various industries including defense, communications, medical, scientific, and industrial applications. Their product offerings include a diverse range of advanced technologies such as VEDs, klystrons, TWTs, TWTAs, CFAs, and satcom amplifiers, catering to the evolving needs of their clients in the field of high-power RF electronics and systems. Generated from their website's infomation