By January 1975, Arbitron telephone surveys showed that nearly half of local radio listeners were tuned into KRNA.
That year, former KFMW morning DJs Lou Waters and Scott Steele became the station's morning-drive disc jockeys.
Dwyer and Michaels joined KRNA as the result of a non-compete clause that prevented them from working at any station in the Quad Cities market for six months after their contract with Clear Channel Communications expired at the end of 2006.
On March 1, 2007, a Scott County judge ruled that Dwyer and Michaels did not violate the clause since Arbitron did not consider the Quad Cities part of KRNA's market area.
[8] For many years, KRNA was known for distributing free posters of the Iowa Hawkeyes men's basketball team at live remote broadcasts.
This tradition began in the late 1970s, and while the posters are now sold by the University of Iowa athletic department, they continue to be printed under the sponsorship of KZIA.