The station began broadcasting in May 1963 and was officially licensed on August 8, 1963, to operate a power of 10 watts and a coverage area of about six city blocks.[4][5] The station initially operated on FM at 88.3MHz with an AM carrier current simulcast on 600kHz.[6] In 1979, the station increased its FM transmission power to 3 kilowatts and shifted to 88.1MHz.[5][7] In November 1982, the station again increased its transmission power to 100 kW[3][8] and switched to its current frequency of 88.7MHz.[9]
KRVS's call letters stand for Radio Voice of Southwestern (The university's name at the time the station signed on was the University of Southwestern Louisiana).[4][10] Originally a college radio station, it joined NPR in the mid-1970s.
Today the station serves roles as regional public radio and an international online resource. KRVS broadcasts at 100,000 watts, providing service to 651,000 residents in 12 parishes across southern Louisiana, an area referred to as Acadiana. KRVS programs are also available on the Internet.
In fall 2023, KRVS launched an HD Radio subcarrier for the student-run station, KampusFM.[11] The station also operates an all-talk channel, "News & Talk," featuring public radio programming on a third HD subcarrier.[12]
KRVS operated a translator at 90.5 FM K213AZ in Lake Charles that was licensed on February 6, 1989.[13] It was shut down on May 22, 2001 after American Family Radio opened a full-power station, KYLC, at nearby 90.3 FM.[14][15][16] FCC rules allow a full-power station to force any adjacent translators to shut down. In 2003, KRVS moved its transmitter 30 miles to the west to extend its signal to Lake Charles.[17]
^Broussard, Ryan (June 17, 2009). "Radio Voice of Southwestern". The Independent Weekly. Lafayette. Archived from the original on June 20, 2009. Retrieved July 19, 2020.
^"Import letter". Federal Communications Commission. September 23, 2002. Retrieved November 24, 2022.
^"Lake Charles with no public radio". The Town Talk. Alexandria, Louisiana. Associated Press. April 14, 2001. p. 5. Retrieved July 18, 2020 – via Newspapers.com.
^"Louisiana". Public Radio Coverage 2004. National Telecommunications and Information Administration. Archived from the original on October 22, 2011. Retrieved July 18, 2020.