Advertisements I have TV connected to Onkyo audio device, then to TiVo Roamio OTA which is connected to my ClearStream antenna via a preamp and a 4 way splitter, for the past 3 years, and I am very happy with it up to a point. I have another TV getting its signal from the splitter. Sometimes on the TV connected to TiVo one of the VHF channels become weak and the reception becomes very bad, but the TV that is connected to the splitter has a better signal. So I am not sure where the signal attenuation is happening. I thought maybe the 4 tuners in TiVo might be causing the problem, but I have no way to disable any of these tuners. So any help would be appreciated.