This 18 inch x 20 inch DIRECTV HDTV Phase III Triple LNB Dish Antenna will allow you to maximize your DTV programming. The Multi-Satellite dish is an 18-by-20-inch reinforced weather-resistant antenna with two dual LNBs, a single LNB and an integrated four-output multi-switch. The third feed location (LNB) affords DIRECTV customers the option of HDTV programming, such as SHOWTIME from the 110 orbital location. The California Amplifier three LNBs and a multi-switch are built into one unit, which minimizes the need for wire and saves installation time. All the DIRECTV satellite dish antennas manufactured by KTI are weather-resistant and can withstand 50 - 75 mph winds to provide durability for years of service. All dishes come complete with antenna; mount assembly including bracket, arm, mast and base; and necessary hardware. The antennas are easy to install and adjust; and deliver sturdy support to maintain optimal positioning. When installing the Satellite Dish, align the dish so that the 101W satellite has a strong signal locked in first. After you have a strong signal from the 101W satellite, then adjust the tilt only until you achieve a strong signal from the 119W satellite. This will not work in the reverse order.