... : Bushnell Speedster II Radar Gun 101900 Introduction: A radar gun or speed detector is a small Doppler radar unit used to detect ... and received frequencies creates what is known as moving radar, the radar must be stationary to measure speed. Features of ... , softballs, RC cars, RC boats, etc.. -- Compact & Ergonomic Radar gun design - comfortable Bushnell point-and-shoot pistol grip -- Displays ...