AM transmission was dependent on the old analog telephone lines to the campus residence halls. This marks the end of AM broadcasting of any station on Slippery Rock's campus. As a result, WRCK applies for a new license to build a dedicated FM transmitter. The FCC grants the university a construction permit and the callsign WRSK, which becomes active effective November 30. Despite WSRU claiming WNFT as its roots and celebrating a 50-year anniversary in 2012, this legally marks the official foundation of the modern campus radio station. Due to having no dedicated transmission equipment, WRCK is only heard in the lobby of University Union from 1990 to 1991. WRSK, 1991 - 2006 WRSK's first day on-air was September 1, 1991. This ends the station's 30-year history of closed-circuit broadcasting (whether through carrier current AM or locally). The station launched at 8am local time and played The Rolling Stones' Start Me Up to mark the milestone. During the 1992 campaign cycle, California governor and former Democratic presidential candidate Jerry Brown calls and is interviewed by Richard Hart, host of WSRU's only talk radio program, "Straight to the Hart." In 2003, DJ Paul Miller interviewed WWE Legend Mick "Mankind" Foley on the Low Blow Show. Foley then spoke at the university's Union about his time in the WWE. After the license for the WSRU callsign (which had been owned by the university's communications department) expires in 2005, WRSK purchases the license and becomes WSRU-FM effective December 1, 2006. WSRU In 2012, WSRU celebrated their 50th Anniversary of radio at Slippery Rock University. In 2013, a short-lived online feed of WSRU was launched with Integrity 3.0 being the first show to broadcast in this format. However, online streaming would cease three months after launch due to new FCC regulations on the medium. Due to the relatively low range of the station's FM feed, launching a licensed online broadcast becomes a priority. On Feb. 28, 2022, WSRU 88.1 FM's Facebook page announced that you can listen online via http://wsrufm.com or by downloading their app. Despite not having a formal news operation at the time, WSRU invited four candidates for Slippery Rock's congressional district to hold an interview on-air prior to the 2018 primary. In October 2018, the Democratic nominee for Lieutenant Governor of Pennsylvania, John Fetterman, was interviewed by WSRU news director Madison V. King. Fetterman would go on to win the election