Had the same issue about 6 months ago. Sure you can use a splitter, but you will be splitting the RF signal going from the DTV box and into the TV. When I did that all I got was 2 TVS with marginal signal. I scrapped that and got a system called Leapfrog by Terk. Found one on eBay for $30. You have 2 little boxes, one hooked to the AV out on the DTV box and the other box hooks to the remote tv. Box 1 broadcasts to box 2. Works great for me. It also has an IR repeater so you can control the DTV box from the TV 2 location. Might give it a look.