... Crystal FM72.190Mhz Application:Aircraft Radio Control.eg,Helicopter,Plane,Car,Boat,Tank Radio Control Models Crystal FM72.190Mhz (1)Aeromodeling ... 2)It can be adapted different modulation methods, such as: AM, FM and PPM(3)Different mixing methods, such as: RX ... , KO propo, Hi-Tec, GWS, .... Application:Aircraft Radio Control.eg,Helicopter,Plane,Car,Boat,TankSystem: AM,FM&PCM.TX, RX, & RDX Crystal