Since World War II, residents of Sackville, New Brunswick heard voices in their sinks, refrigerators, and radiator pipes. Lights glowed on and off at random, and even transmitted thoughts into their minds, causing one spooked soul to dream in languages that he was unable to speak. For anyone unaware of their source, these broadcasts from beyond could sound supernatural.
The foreign tongues filtering into the east coast Canadian town with a population of less than 6,000, were actually due to shortwave transmissions, unintentionally picked up from 13 radio towers located
in the saltwater Tantramar Marshes.
Full article including 5 minutes of video from the documentary Spectres of Shortwave and interview with filmmaker Amanda Dawn Christie.