Radio Shack, Remote Control A/B Switch for 75 ohm Coax. SWITCHES BETWEEN AN ANTENNA AND A VCR, SATELLITE RECEIVER, VIEDEO GAME OR CABLE BOX TWO 75-OHM INPUTS AND ONE 75-OHM OUTPUT SWITCH BETWEEN VIDEO SOURCES BY REMOTE CONTROL OR MANUALLY LIGHTED A/B INDICATOR ON RECEIVER MEETS FCC REQUIREMENTS