I have had X10 installed in my house for years. Within the past couple weeks, I started noticing that at night, a lot of my X10 stuff wasn't working. I've done some investigation with my ESM-1 meter and have found that one leg of the house is experiencing outrageous noise levels. The meter shows a steady reading of over 50%. The other leg is fine. My front porch light is scheduled to come on around 1/2 hour after sunset and that seems to work most days, but it will never shut off because sometime after that this huge noise starts. I have a coupler-repeater installed, but the noise is too great and it doesn't help.
I don't think this is coming from my house. Nothing much changes here between night and day except for a few lights, but I'm sure they aren't causing the problem. I'm guessing it has to be a neighbor, probably close, right?
What can I do about this? I have a Panamax whole house surge suppressor which has not been installed yet. Would that be able to block noise coming from outside, or do I need some other kind of whole house filter?