KWRN

But at night, because 1550 AM is a clear channel frequency, KWRN must reduce power to 500 watts to avoid interference with other stations.

[3] In 1989, a construction permit was granted by the Federal Communications Commission for a new AM station in Apple Valley at 1550 kHz.

The call sign changed to KWRN in 1994, coinciding with Major Market Broadcasting's acquisition of the station.

In November 2016, translator 94.3 K232EW in Ventura was purchased from Southern California Public Radio for $40,000.

[4] On November 15, 2016, the Federal Communications Commission granted a construction permit to move K232EW from Ventura to Apple Valley and change the frequency to 99.5 MHz with an accompanying change of call letters to K258DE.