Frequency range of the output port: 47-862MHz(fixed channel output); SAW-VSB filter is used in medium frequency processing part,double SAW filter for selection; The frequency convert mode of the double SAW filter is double balance modulation; Frequency composition Phase Lock Loops control Video carrier wave and Audio carrier wave; External medium frequency loop link for selection; The power switch and working indication LED is on the front board; Sticking on cover technics; Dimension (mm): 482.5 x 280 x 46.