This is the Transmitter Crystal for the Tactic 72MHz FM Transmitter used in the Hobbico Flyzone Cessna 182 RTF FEATURES: Replaces lost or damaged transmitter crystals INCLUDES: Transmitter Crystal for the Tactic 72MHz FM Transmitter REQUIRES: Installing in transmitter Only for use with the Tactic brand 72MHz transmitters jxs 7/17/07 ir/jxs