Hey guys Im new here and was wondering if I could get some info concerning my hookup. I have a outdoor antenna from radio shack (the best they had). From there I used a splitter and split the signal to 3 tvs. I got good reception with one tv but the other is hopeless maybe 3 channels out of 16. My converter boxes are the Zenith 901 model. Do I need amplifier of some sort?? Please help!!