This is a Performance Devices PDV1000077 75Mhz Channel 77 AM Crystal Set for Futaba, Hitec, and JR Radios. Each set includes one transmitter and one receiver crystal. Performance devices delivers the finest R/C crystals available. The extremely tight tolerance specifications of this crystal guarantees exceptional performance. Performance Devices offers a lifetime guarantee on their crystals. ***NOTE: These crystals will only work with Futaba transmitters manufactured after 2000.
