The station was built by Paul Borjnstadt in 1991. Current owners, John and Susan Mielke purchased the station in July of 1996. At the time of purchase KKNX was broadcasting Bloomberg Business News. The decision was then made to change KKNX Radio 840 into KKNX Solid Gold Radio 84, a showcase station for the Top 40 music of the 1950's through the 1970's. All analog studio and production equipment was replaced with state of the art digital equipment. The Mono broadcast signal was converted to a Stereo signal, making KKNX Solid Gold Radio 84 the only digital AM stereo radio ...