Use a plain regular RG-6 coax , RG-6 quad shield is not required or needed. Use a simple common 3 way splitter to connect the 3 Tv's with. Tv station K15DA UHF channel 34
http://www.tufftv.com is weak signal strength. IF K15DA is not received on all 3 Tv's , then remove the 3 way splitter and install a Channel Master CM 3414 four way distribution amplifier. For 3 Tv's connected to the CM3414 that will leave one output unused , put a 75 ohm screw on terminator on the unused output.