The ANTOP 3-ways Splitter splits a single incoming coaxial signal, such as satellite signal, over-the-air HD (digital TV) antenna signal, into two outgoing signals. Product Information ※All ports female F connector 75 Ohm ※All ports DC power pass ※Light weight and compact size ※Zinc die-cast with 18K gold-plated ※Low insertion loss, high return loss and isolation for satellite and over-the-air HDTV signal ※Two pieces of screws attached. NOTE -Antenna effectiveness is influenced by the distance from signal origination point, station signal strength level, building construction, antenna positioning, reflections from nearby structures and any power consumption sources. -THE AMOUNT OF FREE OVER-THE-AIR CHANNELS YOU CAN RECEIVE WILL VARY BY AREA AND ANTENNA SELECTION, CHECK SIGNAL VAILABILITY AT http: //hdtv. gov/maps( FCC. GOV/MEDIA/ENGINEERING/DTVMAPS).