I have a 1989 Tv that I am trying to hook up a DVD player to via a digital cable box. I got an RF modulator but still don't know how to hook up thru digital cable box. Since it is digital do I have to splitter instead of RF modulator or do I use both. I need step by step instructions please on how to do this. Thanks
I'm guessing you don't have RCA jacks on the TV. Get an A/B coax switch, hook the cable to one input, then hook the RF modulator from the DVD to the other input, then hook the output to the TV.