The U.S. Navy has announced that, on September 30, it will close down its Project ELF transmitter, according to the Milwaukee Journal Sentinel. The transmitter, which consists of a 56-mile antenna on Michigan’s upper penninsula and a 28-mile antenna in nothern Wisconsin, operates at 72-80 Hz with a peak power in excess of 2 million watts, is used to communicate with submerged submarines. Over the years, it has been the scene of countless protests and the subject of a number of lawsuits.
