One for all signal boosters couldnt be easier to use connect it to your wall socket and within seconds begin to enjoy crystal clear reception from your tv or radio built with 4 outputs designed to boost your tv and radio reception in poor signal areas amplifying the signal by 23db and ensuring the maximum number of channels are available to choose from one for all signal boosters have a built in 3g4g lte block filter to protect your tvset top box stb against interference from smartphon