outlets KDKA in Pittsburgh, KYW in Philadelphia, WBZ in Boston and WBZA in Springfield, Massachusetts. Westinghouse built new studios for WOWO at 925 South Harrison Street in Fort Wayne, which were completed on May 1, 1937. On that same date WOWO joined the NBC Blue Network, while maintaining its CBS network affiliation, as multiple network affiliations were common for Blue affiliates. On March 29, 1941, Westinghouse completed the Federal Communications Commission (FCC) licensing of WOWO's famous clear-channel signal on AM 1190, making it a Class I-B station, operating around the clock at 50,000 watts. During and after World War II, these clear-channel broadcasts made WOWO a popular radio superstation of sorts throughout the Eastern United States. Although there were other radio stations broadcasting on 1190 kHz during daylight hours, they were required by the FCC either to cease broadcasting at sunset or to reduce their power at night to make way for WOWO's clear-channel signal. For instance, WLIB went on the air in New York in 1942 at AM 1190. It was required to sign-off at sunset time in Fort Wayne, so it would not interfere with WOWO's broadcasts. In August 1941, the FCC began implementation of a "duopoly" rule, which restricted licensees from operating more than one radio station in a given market. Westinghouse elected to retain WOWO, and sold WGL to the Farnsworth Television and Radio Corporation in 1945. On April 30, 1952, WOWO's studio and offices were relocated to the upper floors of 128 West Washington Boulevard. It was here that the station began its famous "fire-escape" weather forecasts, involving obtaining weather conditions from the fire escape ledge. In 1977, WOWO's studios moved to the fourth floor of the Central Building at 203 West Wayne Street in Fort Wayne, where it would remain for the next fifteen years. When the station relocated to the Central Building, the old fire escape was cut into small pieces, encapsulated in Lucite and distributed as a promotional paper weight. Programming for the station changed several times. As network programming shifted from radio to television in the 1950s, WOWO's network affiliations were discontinued in 1956. The station switched to playing popular music, along with news, sports and talk. In the 1960s and 70s, WOWO was a popular Top 40 music station, not just in the Fort Wayne area, but after sunset, around the Midwest and Eastern U.S. Agricultural broadcasts With Fort Wayne