My ISP is cable. Called and said they needed in my house to find the source of the signal that was affecting everyone else in my neighborhood. Literally nothing had changed and my house has been connected since 2010.
The tech arrived and I had them start outside. He replaced every connection/coupling and kept testing. After all of them were replaced, his testing machine showed a perfect signal. Noise eliminated. I was not charged for this service.
I found this baffling. My neighbor’s coax connections affect me?
I’ve previously reported an issue to my ISP and it turned out to be loose cables and unterminated cables. Once that was taken care of all was well again. So now every once in a while I check the tightness. I find it amazing they can even loosen up, but they do just from minor jostling of boxes.