Pictured above is a two-way RF Cable splitter and RF cable. The purpose of this device is to gain the ability to send a single incoming antenna or cable feed to more than one component. This is especially handy if you are trying to connect both a DVD recorder and VCR (or two VCRs) to your incoming antenna/cable feed so that they be operated independently. It can also be used to send two cable feeds to TVs in different rooms.
