When I plug my combo practice amp into a normal wall outlet I pick up a local public radio station, just loud enough to be annoying. The only way I've found to reduce it is to plug it into a UPS or to wrap the input cable around the amp. Anyone have a technical explanation of why this happening and/or any solutions?
Edit: Crate combo amp (pretty cheap), and Epiphone Les Paul with Humbuckers. Tried testing again and plugging into UPS doesn't complete eliminate radio, but does diminish it. Radio sounds still happen when guitar and cable are NOT plugged in. Implying the problem must be in the amp itself and not necessarily from the cable/pickups acting as an antenna - although I can't imagine that helps.