... FM72.190Mhz Application:Aircraft Radio Control.eg,Helicopter,Plane,Car,Boat,Tank Radio Control Models Crystal FM72.190Mhz (1)Aeromodeling crystals ... -Tec, GWS, .... Application:Aircraft Radio Control.eg,Helicopter,Plane,Car,Boat,TankSystem: AM,FM&PCM.TX, RX, & RDX Crystal