Radio KSTZ-FM (Star 102.5)

KSTZ, known as "Star 102.5," is an FM radio station based in Des Moines, Iowa. The station plays Hot AC music. KSTZ is part of Saga Communications' Des Moines Radio Group, along with KPSZ, KRNT, KAZR, KIOA, and KLTI-FM. KSTZ is programmed by Stu Stevens.

KRNT-FM signed on in 1970 under the ownership of the Cowles family, publishers of the Des Moines Register. In 1974 the station became KRNQ, "Q-102"; that year, Cowles sold KRNQ and KRNT (AM) to Stauffer Communications of Topeka, Kansas. The two stations were sold to Saga Communications in August of 1988. KRNQ was originally an automated Top 40 station, but in 1984, the station began using local personalities. By the end of the 1980s, KRNQ was at or near the top of the local Arbitron ratings. In 1991, due to Saga's decision to reach older listeners, what was known as Q102 with a contemporary hit radio format changed to an adult Top 40 format and was known as "Q102/KRNQ Today's Hits and Yesterday's Favorites". Q102/KRNQ promised to play no rap (even though it was rarely played on the station after Saga's purchase in 1988) or hard rock, both of which were very much a part of popular music at the time. This format change left Des Moines with no contemporary hit radio for nine years, until KKDM's flip from Alternative to Top 40/CHR in 1999. KRNQ became KSTZ on June 25, 1993. (The KRNQ call letters are now used for a station in Keokuk, Iowa.) When the station reimaged itself to adult contemporary in 1993, the positioning statement the station used was "Superstars of the 70s 80s and 90s" (with the 'STZ' in the call letters forming an abbreviation for 'stars'). The station later switched to "The Best Variety of the 80s, 90s and Today". In 2001, the station began using the current positioning statement of "Today's Best Variety" with an Hot AC format.