Hi. Over the Christmas period I observed severe interference on 20 metres. I do have to admit that I only use this band once in a Sheffield flood. I have tracked the source of the interference down to my neighbours PLASMA LG television. He is a very amiable guy, so I said I would do some research to find out what part of the TV might be generating the interfetence, my guess would be the SMPS but I am no expert in this field. If it is the SMPS I guess the first thing to do would be to fit some type of ferrite core to the mains lead, just not sure what type & how many terms. I will attempt to attach a screen shot of the interference. Regards Graham.