In December 1949, the station first signed on as KLMO, originally at 1050kHz.[3] It was a 250-watt daytimer, required to be off the air at night, and owned by the Longmont Broadcasting Company. In 1965, it shifted to 1060 kHz, and in the 1970s, increased its power to 10,000 watts, but still daytime only.[4] In the 1980s, KLMO received Federal Communications Commission approval to broadcast around the clock, but with only a small amount of power at night.
The station aired a full servicecountry music format for Longmont and the northern suburbs of Denver. KRCN, began broadcasting the Business and Personal Finance format under the branding "The Radio Colorado Network" on March 22, 2000. This format targeted the greater Denver metropolitan area.[5][6]
The Radio Colorado Network was an ambitious regional effort that included several other AM signals in the state. KRCN-1060 AM was the flagship station for a network that included KVLE 610 AM (Vail)[7]KREL 1580 AM (Colorado Springs)[7] and KGRE 1450 AM (Greeley) (at least temporarily).[7]