John P. Freeman

Spectrum Control, Inc. designs, manufactures, and markets control products and systems. It operates in four segments: signal, power integrity and microwave components, power management systems, and sensors and controls. The company was founded in 1968 and is headquartered in Fairview, PA.

API Technologies Corp., through its subsidiary Spectrum Control, is a leader in high-performance RF and microwave signal processing and conditioning, and electromagnetic interference protection. The company is based in Marlborough, MA and has a global presence of subsidiaries in several regions. The company offers a wide range of filtered D-subminiature connector options that improve performance, save board space, and reduce costs by managing EMI at the signal and power I/O. For more than 70 years, the company has developed reliable, high-performance technologies for powering and conditioning RF and microwave signals and protecting electronic equipment from electromagnetic interference. The company was founded in 1981 by Phillip DeZwirek. Richard D. Sorelle has been the CEO of the company since 2021.