A simple to build RFI indicator can monitor such issues on your feedline. Omer DU1RZ has come up with a tool that needs a toroid, a few turns of wire and LED. Sounds like something old-timers called a ‘soup loop’ that used a small incandescent globe.
In a part of the ongoing consultation process the Wireless Institute of Australia wants to measure the views of those in Amateur Radio. No, you don’t have to be a WIA member, or even give your identity.