Description of Product: Applicationï¼ Receives pictures and data for mobile car. Characteristicï¼ Easy to install firmly with high gain, clear pictures and speech, whole excellent capability. Receive and transfer data are dependable. Waterproof and damp proof. Main Parameter: frequency (MHz) 790--798 bandwidth (MHz) 8 gain (dBi) 4.0 VSWR <1.5 polarization Vertical max Input Power (W) 50 impedance (ohms) 75 connector F Head (English Unit) installation Method Mount Tail dimension (mm) φ20?15