KRAJ (100.9 FM, "100.9 The Heat") is a commercial radio station that is licensed to Johannesburg, California, United States and serves the Antelope Valley area.

The Zone sourced its programming primarily from Jones Radio Networks but also aired some shows hosted locally from a studio in Quartz Hill, California.

For a few months after KRAJ's format change, the station held over its local specialty shows from the Zone era but later replaced them with syndicated programs that were originally carried by KCEL.

In July 2006, Adelman Broadcasting hired Dan Garite (formerly of KOCP and KCAQ in Oxnard-Ventura, California) as program director and morning drive co-host.

[4] In mid-2008, the station hired Craig EC as program director; he adjusted the format to feature more mainstream pop while continuing to emphasize rhythmic content.