For most of its history, Pacifica gave each of its stations independent control of programming. During the 1990s, a major controversy arose over rumors that the Pacifica National Board and national staff were attempting to centralize control of content, in order to increase audience. The rumors included accusations that the board proposed changing the network's funding model away from a reliance exclusively on listener donations and toward a mix of listener donations and corporate foundation funding similar to that of NPR. There were also accusations that the Board was considering selling both KPFA and WBAI in New York City, which operate on commercial-band FM frequencies (94.1 and 99.5, respectively) worth hundreds of millions of dollars.