KZJK (104.1 FM) is a commercial radio station licensed to St. Louis Park, Minnesota, and serving the Minneapolis-St. Paul radio market. The station is owned by Audacy, Inc., and airs an adult hits radio format known as "104.1 Jack FM." Audacy also owns Jack FM stations in Los Angeles and Dallas. KZJK's studios and offices are on Second Avenue South in Minneapolis. KZJK has an effective radiated power (ERP) of 100,000 watts. The station's transmitter is on the KMSP Tower in Shoreview, with an auxiliary transmission facility located atop the IDS Center in Downtown Minneapolis. KZJK broadcasts using HD Radio technology. Its HD2 digital subchannel carries an adult contemporary format known as "Lite FM." History Early years as KRSI-FM The station first signed on as KRSI-FM on . It was co-owned with KRSI (950 AM) by Radio Suburbia. The two stations simulcast most of their programming, and were affiliates of the ABC Radio Network. KRSI was a daytimer at that time, so KRSI-FM allowed the station to be heard around the clock, even when the AM had to sign-off. KRSI-FM had a limited range, broadcasting at 15,000 watts from a 250-foot (76 meter) tower, located in Eden Prairie, Minnesota on one of the AM station's three towers. The result was a spotty signal in parts of the metropolitan area, even after the power was doubled to 30,000 watts in the late 1960s. Partly due to signal limitations and impatient management, the 104.1 FM frequency went through many format changes throughout its history. In February 1968, KRSI-AM-FM was bought by Park Communications, a radio company with stations in New York City, Los Angeles and other cities. From 1968 until 1973, KRSI-AM-FM played a mix of Top 40 hits and oldies as "Request Radio." In Spring 1969, KRSI-AM-FM ranked as the #3 station in the Minneapolis ratings, behind WCCO and WDGY. By 1971, KRSI-AM-FM moved away from oldies and toward contemporary hits. Rock/top 40 KFMX In March 1973, KRSI became the first affiliate of Drake-Chenault’s automated “Great American Country” format. Both stations moved from their studios in St. Louis Park to new facilities in Eden Prairie (which today is still home to 950 AM). The FM station broadcast in stereo for the first time and moved to an album rock/Top 40 hybrid format, soon changing its call letters to KFMX. KFMX went through a succession of different formats and transitions throughout the