KALX (90.7 FM) is a freeform FM radio station that broadcasts from the University of California, Berkeley in Berkeley, California. KALX, a community- and student-run radio station licensed to the University of California, Berkeley, broadcasts in stereo with 500 watts of power. The station employs three full-time paid staff members, but is largely run by its nearly 300 volunteers, including Berkeley students and other members of the local community.
The station originally began broadcasting in 1962, as a carrier current
station. By 1966, KALX (then known as Radio KAL, the call letters
being derived from Berkeley's nickname "Cal") had moved from Berkeley's dormitories
to Dwinelle Hall on campus, and Berkeley administrators began investigating the possibility of applying for a broadcast frequency
for the station. KALX received its broadcast license and made its first FM broadcast, with 10 watts of power, in 1967. In 1981, the station began a successful fundraising
drive to boost its power level to the present-day 500 watts, a level that was reached in 1982.
As a freeform radio station, KALX requires each DJ
to play diverse styles of music
within the course of a single show
are encouraged to play three distinct musical genres during their show, plus four cuts from recently released albums per hour.
KALX offers a diverse range of public affairs programming. KALX functions as a great resource to the Berkeley community by offering many kinds of Public Service Announcements throughout its daily broadcast.
For a time in the 1970s, KALX was the flagship station of Major League Baseball's Oakland A's. At the time, it was all but unlistenable 10 miles from Oakland Coliseum.