I ran into the same problem with my vizio tv and I used a signal combiner or high end splitter in reverse and it worked fine. If you take the splitter input to the single rf in connector on the tv and then use one of the remaining ports on the splitter for the ota and the last port for the cable or rf, it should work fine because the splitter is by directional and the ota frequency is in the 5 to 900 hz range and the hdtv is in the 900 to 2500 hz range. It is working fine on my tv.