This is a brand new, four (4) port cable television drop amplifier, similar to the products that your local cable company uses to correct their system's shortcomings. The amplifier allows you to connect up to four devices to a single input connection, without losing signal strength like you would with normal splitters. It boosts signal strength in an intelligent manner, by limiting the naturally stronger signals on the low frequency range and boosting the frequencies on the higher end. Since TV signals tend to natually lose strength on the high frequencies faster than the low frequencies, you are less likely to over-amplify your TV signals and cause further problems. The LSA48 provides a minimum of 0dB gain (which means no signal loss) on the low frequency end (54MHz) up to a +7.5db (approximately 5x signal gain) on the high end 1000MHz end. It improves Analog, Digital & HDTV Picture Quality, and Improves UHF/VHF/FM Antenna Reception! The unit can be used with Cable TV, OTA Antennas (Analog or Digital as long as they are non-amplified). This model packs a powerful punch in a compact, easy-to-install package! If you have multiple televisions or run a cable modem for your internet, this product is recommended. By connecting this signal booster to the cable drop coming in from the street, you can increase the signal strength and eliminate the need for additional splitters, which reduce signal strength. If you are tired of tv pictures that don't seem as clear as they should be, dropped internet connections, or just desire a reliable amplifier to give continuous, steady signal to your home or business, this is for you! Ideal for both indoor and outdoor applications, the LSA84 was engineered to withstand the harshest environmental threats with the capability of enduring repeated high power surges.