Welcome to the Theta-j Associates website. Please browse our site to learn more about the technologies that keep our customers leaders in their respective industries.

Our Mission is to provide a professional and seamless conduit for 'State of the Art' RF & Microwave Technologies that our customers must have to remain competitive in their associated Wireless Industries. It is our duty to research the industry to find the evolutionary technologies that will provide our customers the 'Tools of Technology' they need to be successful in tomorrows wireless markets.

Our dedicated RF Engineering Sales Team has a vast library of design experience and technological tools to solve even the most challenging problems for your RF & Microwave application. Along with our engineering expertise, we have experience in EDI and Web Based Sales Communications Systems. We are members of the AES, ERA, EIA, and IEEE.

If we can help you in any way, please contact us at:

Phone: 847-549-8820
eFax: 847-549-8824

Mailing Address: PO Box #5670 Vernon Hills IL 60061

Technical Inquiry e-mail: engr@theta-j.com
Sales Inquiry e-mail: sales@theta-j.com