Overview

Founded in 1945, Dow-Key is the oldest continuously operating RF switch manufacturer in the United States. We employ our decades of experience to deliver the world’s most innovative switching components, specializing in the design and manufacture of customized, high-performance coaxial switches, waveguide switches and high-reliability (space) switches, including T-switches and switch blocks.

As the world’s largest manufacturer of electromechanical RF switches and devices, Dow-Key remains committed to providing unparalleled customer service, competitive pricing, on-time delivery, and enduring product quality.

Microwave Products Group is Connecting & Protecting People^® by uniting industry leading Filters & Switch brands that design and manufacture communication-based specialty products. These filter and switch products when combined with our extensive and innovative engineering processes and customization capabilities bring our customers to MPG Solutions, our powerhouse partner with Spectrum Operations for the most challenging RF problems.

Filters | Top-tier global leaders in filtering technologies

Our Filters Line specializes in developing advanced tunable and fixed filters to improve RF communications and signal processing. Dedicated to innovation, quality and customer satisfaction, our reliability and SWaP compatibility is unmatched. BSC Filters, Dow-Key Microwave, K&L Microwave, and Pole/Zero are all critical pillars contributing to the success rate of our customers most critical missions.

Switches | There is no substitute for experience^SM

Dow-Key Microwave has been one of the world's largest manufactures of electromechanical switches for RF & Microwave applications since 1945. Leveraging generations of evolving technologies our high-performing, low insertion loss switches are distinguished by quality and reliability. Because of the high-reliability and high-repeatability of our Switches, they are suitable for customers in a wide range of applications, including launch vehicles and manned vehicles and satellites in Space.

MPG Solutions | Unique integrations for the most challenging environments

Collectively leveraging a wealth of long-standing brand recognition through MPG's original five brands, MPG Solutions accelerates innovative and trusted Switch & Filter technologies that are engineered into advanced system solutions that meet the ever-advancing customer requirements. Our cross-functional and global resource base provides over 200+ years of niched experience in RF design and manufacturing which is coupled with transformative business support to deliver the most reliable communications solutions our customers can depend on.

Spectrum Operations | Advanced RF signal solutions

MPG’s Spectrum Operations Line features our Espy brand of wideband RF signals search, survey, discovery and geolocation solutions. Our AI/ML technologies cater to optimize overall system and software performance and are very well-suited for a variety of spectrum monitoring and enforcement applications that our critical to global defense and security.