If you need to connect a coaxial video cable to a device and the cable isn’t long enough, you can use a second coaxial cable to extend the length. Using two shorter cables to create a longer one is cheaper than buying a longer cable; plus, the cable you’d purchase would likely be shorter than the cable made from two shorter lengths. The two cables can be connected quickly and easily using a coaxial coupler. Writer Bio

How to Connect Two Coaxial Video Cables Together to Extend the Cable Length - 88