SatelliteSale Universal F-Type 75 Ohm Coaxial Terminator reduces signal loss and reflection that is usually generated by open or unused ports. Keep your coaxial equipment ports clean, prevent dust and moisture from penetrating. SatelliteSale Universal F-Type 75 Ohm coax terminator caps reduce signal loss and reflection that is usually generated by open or unused ports. Keep your coaxial cable accessories ports clean, prevent dust and moisture from penetrating. These F-type 75 Ohm coax terminator caps cap off unused and open F-type connectors on your TV, splitters, amplifiers, coaxial cable accessories, boosters, and wall plates. F termination cap terminates RF signals on open and unused equipment ports to prevent signal distortion that may decrease your system performance. These coax terminator caps are compatible with all the systems over coax. This includes: Dish Network, Cable Vision, Verizon, Comcast, AT & T, Altice, DirecTV, Charter.