Agreeing with ADTech...
Consider the fact that virtually all TV tuners include an amplifier that is able to adjust to dynamic signal conditions. They typically have a range that covers many times more loss than we are discussing here. Your TV tuner may have little trouble accommodating the lower signal level.
If you do have problems after inserting the added loss of the splitter and additional coax, the Channel Master CM-3410 distribution amplifier would be my suggestion. Otherwise, I would not be troubled about the relatively small amount of added loss.