Generally, yes, or you need someway to amplify and split the signals to other TV's (which means running cable). So you have to do the math to see what makes the most sense for you. If you do decide to run cable, then don't cheap out on cable or amplifier. I would suggest you purchase from a reputable online retailers vs the local hardware store. Good Amplifiers / splitters will set up back $50 or more. Stay away from the $10 splitters. In theory this unit is already amplified, but I doubt it has enough power for very long runs.