"In 1922, during the infancy of broadcast radio, the call letters WLW were assigned to the station begun by Cincinnatian Powell Crosley Jr. The station moved its transmitting operations to Mason in 1928, and by April 17, 1934, WLW had permission to operate experimentally at 500,000 watts. Becoming the first and only commercial radio station to broadcast at this "superpower," WLW was formally opened at 500,000 watts by President Franklin D. Roosevelt on May 2, 1934. Using its 831-foot Blaw-Knox antenna to broadcast at ten times the power of any station, it earned the title "The Nation's Station." Locals reported hearing broadcasts on barbed wire fences, milking machines, rainspouts, water faucets, and radiators. The custom built transmitter, a joint venture between RCA, GE, and Westinghouse, remained in operation until March 1, 1939 when the Federal Communications Commission (FCC) ordered the station to return to broadcasting at 50,000 watts."
Source: The Ohio State Historical Marker on site and in the photos above
"The Blaw-Knox company was a manufacturer of steel structures and construction equipment based in Pittsburgh, Pennsylvania. The company is today best known for its radio towers, most of which were constructed during the 1930s in the United States. Although Blaw-Knox built many kinds of towers, the term Blaw-Knox tower (or radiator) usually refers to the company's unusual "diamond cantilever" design, which is stabilized by guy wires attached only at the vertical center of the mast, where its cross-section is widest. A 1942 advertisement claims that 70% of all radio towers in the US at the time were built by Blaw-Knox.
The distinctive diamond-shaped towers became an icon of early radio. Several are listed on the US National Register of Historic Places and the diamond antenna design has been incorporated into logos of various organizations related to radio, for example the Country Music Hall of Fame and Museum."
Source: Wikipedia (
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