This is the optional 72MHz Synthesized Transmitter Module for the Futaba 7U, 8U, 9C, 9C Super, and 10C radio systems. FEATURES: Eliminates selecting and installing transmitter crystals in the 9C or 9C Super transmitters Simply turn two dials to select any 72MHz frequency from channel 11-60 One year limited warranty INCLUDES: One 72MHz Synthesized Transmitter Module and adjustment screwdriver REQUIRES: Installing in place on back of transmitter and tuning to desired channel COMMENTS: This can also be used with the 5U series radios. Antenna must be partially extended to avoid damage to the module. jxs 3/25/05 ir/jxs update mcw 4/12/06