Modern cable TV and satellite providers deliver high-quality digital video and audio to your TV, depending on CATV Amplifier you're using. In some homes, however, the single incoming cable feed is connected to more than one TV with use of a splitter, and the more that incoming signal gets fragmented and rerouted, the more the overall speed and quality will suffer. The picture can become grainy and snowy, or blurry ghost-like images can appear. Another factor causing signal loss is the number of components connected--if the signal has to go from the outlet to a cable box to a VCR and then to the TV, that can affect it as well.