Re: Ham interference....
We moved next door to an older couple, who were very nice at first. Then the old lady was made to retire from her job at the local school, and became very bitter. One day she complained (amongst other things) that we were causing interference to her television with our CB radio. We told her that we didn't have a CB radio, but that didn't make any difference. To punish us, she tuned a radio to a quiet station and placed it with the loudspeaker against the party wall with the volume turned up to 11, so that every ten minutes, we were subjected to a ten second roar of interference. One day her granddaughter remarked "What's that awful noise in your front room?" Her reply was "I have to put up with that 24 hours a day". My brother in law, an electronics engineer, brought a Radio Direction Finder round and plotted where the signal was coming from. It appeared to be coming from halfway along the wall in their front hall, so I informed her husband and son, but she didn't believe them, and continued to rant at us. One day, we received a visit from an inspector from the Environment Agency, apparently she had made an official complaint, and they had sent him round to remonstrate with us. He was very surprised to be cordially invited into our house and offered a cup of tea. I explained what was going on, and where the interference was being generated, and I demonstrated that, even with our incomer main switch switched off, and the house electrically dead, we were still getting the roaring noise every ten minutes, so it couldn't have been generated by anything we were doing. He went round and told her that she was breaking the law by having the radio so positioned, and made her disconnect it and remove it from the wall. He then told her that it was her thermostat that was the culprit, and he then left. We then heard her say in a very loud voice "You may have been able to pull the wool over his eyes, but you can't fool me". Some while later, while she was in town, her son surreptitiously replaced the thermostat with a new one, and the interference ceased. Her comment was "Thank goodness you've stopped using that %*&^%$ CB radio".