Gonk,

Thanks for you super quick reply. I just tried the grounding block with the grounding wire hooked up to the panamax surge suppressor with both the Cable and OTA Antenna and it worked. There's absolutely no audio hum. Not only that, but the picture is even clearer than before. One good thing is it eliminated the noise entirely. The filter I had used before mostly reduce the noise, but not entirely. Pretty stoked right now.

I've searched the web for a while and haven't seen this answer. I have seen the suggestion of the Jensen filter on the avforum, but ti's expensive - something like $60.