KRKS is powered at 6,500 watts by day; because AM 990 is a Canadian clear channel frequency, KRKS must reduce power at night to only 390 watts. During critical hours at sunrise and sunset, the station broadcasts at 4,200 watts.
On August 1, 1953, the station first signed on as KLIR.[3] It was a 1,000 wattdaytimer, required to be off the air at night. It was owned by George Basil Anderson during many of its early years. In 1959, Anderson put KLIR-FM on the air (now KIMN).
In the 1970s, KLIR got a boost to 5,000 watts, but it still had to sign off at sunset. On November 1, 1970 the call sign was changed to KRKS, and the station switched to a religious format, and eventually becoming the heritage and oldest Christian Radio station in the Denver market; while KLIR-FM continued as a beautiful music station.[4] In the 1980s, KRKS was granted authorization by the Federal Communications Commission (FCC) to broadcast around the clock, but at the reduced nighttime power of 390 watts.
In 1993, Salem Communications paid $400,000 to acquire KRKS.[5] Salem owned Christian radio stations in several dozen large and medium markets around the United States, and continued KRKS's format. The following year, 94.7 FM was bought by Salem and paired up with AM 990, as KRKS-FM.
Expanded Band assignment
On March 17, 1997 the 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 KRKS authorized to move from 990 to 1650 kHz.[6]
A construction permit for the expanded band station, also located in Denver, was assigned the call letters KBJD on August 10, 1998.[7] The FCC's initial policy was that both the original station and its expanded band counterpart could operate simultaneously for up to five years, after which owners would have to turn in one of the two licenses, depending on whether they preferred the new assignment or elected to remain on the original frequency.[6] However, this deadline has been extended multiple times, and both stations remain authorized. One restriction is that the FCC has generally required paired original and expanded band stations to remain under common ownership.[8][9]
