Spectrum Control Spectrum Control was founded in 1968 as a designer and manufacturer of products to suppress or eliminate Electromagnetic Interference (EMI). The company now offers not only the industry's most complete line of coaxial EMI components, but also a full offering of application-specific solutions with ceramics, film modules, filtered and unfiltered interconnects, and antenna assemblies. Understanding how and where potential EMI problems exist in an electronic system can be a daunting challenge. Our solutions are designed to address all mechanical, electrical, and environmental concerns of your system while ensuring the project is kept on budget and schedule. Spectrum Control's integrated approach to problem solving is the answer. We offer comprehensive consulting, diagnostic testing and manufacturing to deliver the ideal solution to satisfy global standards while meeting design parameters.