I see the comments concerning how old parts of this thread is. But actually, I had to search google for " signal strenght cable " AND THIS SITE CAME UP. I read everything and I have to say it has been most informative. I too am a tools junkie and would have easily paid $500 to $1,000 for the right tools to help me with my problem. I have run all new RG6 over the last several years., invested in high end powered spliter off the main feed. No matter what I do, periodically the weak signal issue comes back. In addition to Brighthouse Box's I have 2 Ceton Corp PCIe 4 tuner PCIe boards running on PC's on my network.

In any event, your thread has been most helpful for me in deciding what my next steps will be to isolate my problem. So, Thank You Guys for all the help and expertise. Best Regards: Gene