When Japan surrendered on September 2, 1945, ending World War II, the United States stood as the only superpower. In 2016 several elements of the facility were found to be eligible for listing on the National Register of Historic Places, including the Worthington generator, which after more than 60 years of service was to be removed and replaced in 2019. The transmitter is fed electricity by a direct transmission line from Bonneville Dam on the Columbia River, and in 1957 a 2,500-kilowatt Worthington diesel-powered standby generator was installed as a back-up power supply. At their midpoint, the cables are energized through vertical cables carried by additional towers that rise from the valley floor. Ten cables, ranging in length from 5,640 to 8,700 feet, were draped across the valley in a zig-zag pattern between six steel towers on the crest of Blue Mountain and six on Wheeler Mountain to its north, forming a huge dish.
It was designed by the Radio Corporation of America (RCA) and could send messages instantaneously to every one of the navy's facilities, ships, and aircraft around the world, including submarines cruising beneath the sea.
In late 1953 the United States Navy came to Jim Creek Valley in Snohomish County and built the most powerful radio transmitter the world had yet seen.
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