Don't overlook those screw in fluorescent light bulb replacements. They really generate some nasty RF as do the X-10 remote light switches and outlets and the infamous doorbell transformers. While we are on that subject, I recently heard of a problem with the 24V control transformer on a furnace that was causing a lot of grief and was so bad that it was even getting into the resident't tv picture with what looked like line noise.
73, John, W4AWM
