Kessler Engineering, LLC is a privately owned electrical engineering venture based in Ohio. They specialize in providing innovative solutions through design consultation, new product development, and electronics manufacturing. Their primary focus is on amateur radio products, including automated antenna tuners, shack automation products, and associated accessories. The flagship product of Kessler Engineering is the AT-AUTO, an automatic antenna tuner known for its robustness, sophistication, and ease of use. Additionally, they offer custom RF products, electrical engineering consulting services, custom design of embedded control systems, unique RF product design, and electronic product fabrication.