If your neighbours complain that “you are ruining their TV or radio reception”, engage in a friendly conversation. In the first instance, do not confirm that your station is the source of the noise. Offer to assist and invite them to keep a log of the interference. Make sure you keep a detailed log of your own transmissions as well. Proper paperwork will be critical to help you, whatever the outcome.
The attached template is useful to assist your neighbours in logging the interference.