stardotstar, the last time I fooled with those things, they worked on ANY outlet on the particular transformer feeding them, including your neighbors. In a populous area, this can be a problem. The interference may not be yours, but a neighbor using a skilsaw, or any other appliance. I have an electric coffee grinder that wreaks havoc with tv's, radios, etc. this could be your problem. Good luck, in most situations these things work pretty daggoned well.
#24453 - 04/14/0303:35 PMRe: interference in electrical lines in house
I too, as a shortwave radio listener, have had to track down various sources of RFI (Radio Frequency Interference)coming over the power lines. Here is my hit list: 1. Incandescent dimmers. 2. Electric motors. 3. Fluorescent lighting. 4. Touch lamps. 5. (loudest and hardest to correct) Noise coming in over the POCO lines from dirty insulators or bad pole transformers. 6. Electronic equipment with LED displays, such as VCR's, clock radios etc. 7. HID lighting.
[This message has been edited by kale (edited 04-14-2003).]
#24454 - 04/14/0305:20 PMRe: interference in electrical lines in house