After not using 6 meters for several months, I've been active on 6m again now that there have been some decent openings in recent weeks. Except now I have this massive interference that sounds like electrical buzz/sizzle that hits me with an S7, 24 hours a day, 7 days a week. I never had any noise at all before. The interference starts at about 49.400, peaks across the SSB portion of 6 meters, then dies away by 50.700. Not sure if that's the result of the interference being centered on that part of the band, or if my antenna is just that narrow-banded, but I have no problems on any other bands, HF thru UHF. I've been unable to trace it to anything in my house, so I assume it's coming from a neighbor, but I'm curious.... Does anyone know of any particular devices that would destroy 6 meters, and not cause interference to any other bands? Is it possible the problem could be something in my setup- grounding, etc.?