Futaba 2.4 Module & Receiver Set 8ch R608FS & Tm-8 This is the Futaba 2.4GHz TM-8 Module and R608FS 8-Channel Receiver for the 9C, 9Z, 8U and 7U Radio Systems. Features:Ultra fast channel shifting eliminates interference and eliminates the hassle of waiting for frequencies to open up Simple plug-in module installation-no transmitter modifications neededDual Antenna Diversity- Futaba 2.4GHz FASST system seamlessly select the best reception between two receiver antenna