See how Quin, K8QS, tracked all sources of RF interference for a year. Simple equipment and careful interaction with neighbors solves HF interference issues from numerous sources. See original video on dimmer interference, how to make a loop, and Dave, W7UUU's, fabulous shack, below:
DIMMER NOISE SOLUTION VIDEO:
https://youtu.be/FnzqHw3jb0U
MAKE YOUR OWN LOOP:
https://swling.com/blog/2020/04/diy-how-to-build-a-noise-cancelling-passive-loop-ncpl-antenna/
DAVE, W7UUU'S SHACK W/OUT WALL WARTS:
https://youtu.be/sMMGaVc_Bx4