Welcome to Theta-J Associates, your first source for RF, Microwave, Millimeter-wave & Power Conversion products in the Midwest. Serving the Aerospace, Automotive, Defense, GPS, Medical, Public Safety (P25), Space & Telecommunications Industries, we represent products that offer the best combinations of price, performance, and reliability.

All Microwave Resource Engineers on our staff are degreed engineers with an average of nearly 20 years experience in the electronics & RF industry. Because of our experience, we can help customers through the selection and design process, as well as helping the companies we represent effectively develop and market products that fit the demands your systems need to meet.

Territories Covered:

• Illinois
• Indiana
• Iowa
• Michigan
• Minnesota
• Missouri
• Nebraska
• North Dakota
• Ohio
• South Dakota
• Western Pennsylvania
• Wisconsin

Please take a look at our Supported Technologies for more information

Please browse through our site to learn more about the products we represent, and don't hesitate to contact us if we can serve you in any way.