You can purchase 2-way or 6-way splitters, which means you can connect up to 6 screens to one STB. Also, coaxial cables come in a variety of length ranges, similar to HDMI cables. So, ideally, you can connect to the most distant TV sets using these cables

Connecting A Cable Box Wirelessly To Multiple Tvs At Home. You may have an existing cable box in your main home entertainment system but you want to be able to access that content on other TVs in your house without purchasing or renting another cable box.

Connect the cable's other end to a two-way splitter or multi-port switch, depending on how many TVs you are connecting. Step 3 Link each TV set to the splitter or switch using however many coaxial cables and ports on the splitter/switch you need.