Connect main coax from antenna to where 3 way splitter is. Use 2-way splitter to run one cable to a Tuner (as I linked you), and from tuner use the hdmi to connect to main TV. On the other output of 2-way split, run a cable to the 3-way splitter, thus activating the other 3 tv's with antenna via coax. Do note that each time you split, you lose some signal. Take note that on the 3 way splitter, one output has half the loss that the other two have (3.5 db vs 7 db). Use the 3.5 db to feed the tv furthest away, or the one you want to have the most available signal strength.