 This was pioneered by Edwin Howard Armstrong, one of the early pioneers and inventors of radio.WSBA-FM first appears in a programming guide on February 28, 1949 in the Hanover Sun at 103.3.The efforts of WSBA personnel to enhance the community is seen in an article in a January 7, 1950 article in The York Gazette and Daily  advertising a seminar that was being presented - Otis Morse from WSBA and others from WNOW-AM, WORK-AM, and WRZE-FM 98.3 (Per radio listing The Evening Sun May 12, 1953)  were participating.