... Application:Aircraft Radio Control.eg,Helicopter,Plane,Car,Boat,Tank Radio Control Models Crystal FM72.190Mhz (1)Aeromodeling crystals: ... mainly used in a variety of model aircraft helicopters, aircraft, remote control ... KO propo, Hi-Tec, GWS, .... Application:Aircraft Radio Control.eg,Helicopter,Plane,Car,Boat,TankSystem: AM,FM& ...