said by chong673:Telcodad, I dont have a cable box. I look at my HDTV and the signal strength thing is grey out. I dont know any where to check the signal.
Sounds like you are directly connecting the cable to your HDTV then, using its "Clear QAM" cable tuner.
said by chong673:I got my 4 way splitter (no idea what ohm or freq it is. Archer brand. Radio Shack?) and the splitter and cable are from 15+ years ago when there are no HD stuff.
You need to try changing to a higher quality splitter. See this thread: »
[Connectivity] Recommended splitter Those 2-way splitters all have 4-way versions that you can try.
said by chong673:The longest cable from the 4 way slitter is about 8 feet. Other is 4 feet.
While your cables are relatively short, they could be damaged in some way that could be causing frequency/attenuation variations. Otherwise, there may be a connector issue on one of those cables. See this thread for cabling info: »
Comcast cabling question