This is what my 120Hz line noise sounded like. Halfway through the recording you can here it splutering on and off as well. https://www.mediafire.com/file/96iicptbq68y4tr/2014-10-07_Line_Noise.mp3/file I don't think this is line noise though. It sounds quite different. https://www.youtube.com/watch?v=Oue6JGBKzgg 73 Mark N1UK