This paper explores FM radio's struggle for survival in the 1940s, focusing primarily on the impact of Federal Communications Commission (FCC) decision making and on the influence and activities of the well-established radio corporations, primarily the Radio Corporation of America (RCA). It describes the invention of FM radio by Edwin H. Armstrong and his early demonstrations of it to RCA. The paper next explores some of the early FCC considerations on allocating unoccupied radio channels and notes the reaction of the AM radio industry and of those who were developing television in the 1930s. An FCC decision to allow commercial FM broadcasting is discussed, and then the paper considers post-World War II planning by the broadcast industry, including the industry's efforts to move the band on which FM could be broadcast and the effects that move had on FM radio and on television. The final FCC decision reallocating FM Channels is reported and a series of questions asked of the FCC by FM industry proponents and not responded to are appended. (TJ)