The 610UL is a high-performance receiver specifically designed for hand-launch gliders, park and slow flyers, or small gas planes up to approximately .30-size. The R610UL, featuring JR’s patented ABC & W interference-fighting technology, exceeds the AMA standards for 2im and 3im for unmatched reliability. The R610UL also features an outstanding operating range that puts it at the top of the class in micro receiver performance. The R610UL is designed to be used only with JR brand transmitters capable of FM (PPM) modulation.