Pacifica Radio is the oldest public radio network in the United States. It is a group of five independently operated, non-commercial, listener-supported radio station

Radio station

Radio broadcasting is a one-way wireless transmission over radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both...

s that is known for its progressive/liberal political orientation. It is also a program service supplying over 100 affiliated stations with various programs, primarily news and public affairs. The first public radio

Public broadcasting

Public broadcasting includes radio, television and other electronic media outlets whose primary mission is public service. Public broadcasters receive funding from diverse sources including license fees, individual contributions, public financing and commercial financing.Public broadcasting may be...

 network in the United States, it is operated by the Pacifica Foundation, with national headquarters adjoining station KPFA

KPFA

KPFA is a listener-funded progressive talk radio and music radio station located in Berkeley, California, broadcasting to the San Francisco Bay Area. KPFA airs public news, public affairs, talk, and music programming. The station signed on-the-air April 15 1949, as the first Pacifica Station...

 in Berkeley, California

Berkeley, California

Berkeley is a city on the east shore of the San Francisco Bay in Northern California, United States. Its neighbors to the south are the cities of Oakland and Emeryville. To the north is the city of Albany and the unincorporated community of Kensington...

.