KCNZ (1650 kHz) is a commercial AM radio station licensed to serve the community of Cedar Falls, Iowa.

Play by play on the station includes the Chicago Cubs, Iowa State University football and basketball, the NFL from Westwood One, Waterloo Black Hawks hockey, Waterloo Bucks baseball, and Cedar Falls High School football and basketball.

On March 17, 1997, the Federal Communications Commission (FCC) announced that eighty-eight stations had been given permission to move to newly available "Expanded Band" transmitting frequencies, ranging from 1610 to 1700 kHz, with KCNZ (now KCFI) in Cedar Rapids authorized to move from 1250 to 1650 kHz.

[2] A construction permit for the new station on 1650 kHz, also located in Cedar Falls, was issued the call sign KDNZ on August 3, 1998.

One restriction is that the FCC has generally required paired original and expanded band stations to remain under common ownership.