KJOY is an FM radio station serving the Stockton area with its lite rock format. It broadcasts on FM frequency 99.3 MHz and is under ownership of Cumulus Media. KJOY signed on the air as KJAX in 1968 with an Instrumental Easy Listening Music format also known as Elevator Music and Beautiful Music. It was known as Cloud 99. It was originally owned by Joseph Gamble Stations Inc. and was the FM Sister Station to KJOY-1280 AM. In 1989, Both stations flip flopped their call letters with KJOY on the FM dial and KJAX on the AM dial. Today, KJAX-1280 is KWSX.
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