as well as popular dance music the next night. Due to GE's involvement in RCA and RCA's launch of the NBC Red Network, KGO was soon operated by NBC management out of studio facilities in San Francisco. See the KNBR entry for a fuller discussion of NBC's San Francisco radio operations. In order to make its Schenectady outlet a clear channel station, GE effected a breakdown of 790 kHz. WGY would assume the maximum permissible power, and KGO would be lowered in power to 7,500 watts. That was then lower than the minimum permissible power for a clear channel station (10 kW), and also was then higher than the then maximum permissible power for a regional channel station (5 kW). Both stations retained omnidirectional antennas. Therefore, GE effectively removed from the West one of its eight clear channels and added another clear channel to the East, thereby giving the East nine cleared channels and the West only seven. The other "regions" in the Band Plan all retained their allotted eight cleared channels. 1940s and 1950s In 1941, stations on 790, including WGY and KGO, were moved to 810 to comply with the North American Regional Broadcasting Agreement (NARBA). On December 1, 1947, KGO switched to a directional antenna and its power was increased to 50,000 watts, the new minimum standard power for a U.S. clear channel station. An article in Broadcasting magazine noted that the increase "retired the nation's oldest regularly operating transmitter-a 7,500-watter ... in use since Jan. 8, 1924." When the Federal Communications Commission forced NBC to sell one of its two networks (and that network's owned-and-operated stations), KGO's license switched from Radio Corporation of America to the Blue Network, Inc., effective January 23, 1942. The NBC Blue Network simply dropped "NBC" from its name to become the "Blue Network," then in June 1945 re-branded itself the American Broadcasting Company. KGO became one of the founding stations of the ABC Radio Network as a result. In the postwar period, KGO produced many live music programs, including that of Western Swing bandleader Bob Wills, whose music was a staple of the time. KGO was instrumental in bringing the first exercise show to broadcasting, hosted by Jack LaLanne, a fitness instructor and gym operator in nearby Oakland. LaLanne conducted his radio fitness show for many years on KGO, moving in the late 1950s to KGO-TV and a successful TV syndication