Amundsen Electronics llc. 1018 Hasty Road, Marshville, NC 28103 . Founded 1978. www.amundsenelectronicsllc.com. Satellite Antenna Control Systems. Control System Upgrades. We specialize in the AIU (antenna control interface). We design and build these systems for any make and size antenna. We have worked with Research Concepts since they were founded. We supply their control systems with our products. We specialize in overbuilt systems. Systems that are expected to exceed the original manufacturers design life. We supply complete documentation, including schematics. Should it be necessary to repair, parts are available on the commercial market anywhere in the world. Let us design one for you!