The station began broadcasting in 1990 from One Shell Plaza on channel 33 under the call sign K33DB as a low-powered translator for KTFH (renamed KPXB in 1998), in order to improve KTFH's analog coverage in Houston since its full-power analog transmitter site was located in the far northern suburbs of Houston.
On August 31, 1998, the station became a charter affiliate of Pax TV (now Ion Television) and the station's call letters were changed to KBPX.
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The company sold KBPX to the Equity Broadcasting Corporation, which immediately changed the call letters to KDUO and affiliated the station with the home shopping service America's Collectibles Network (now Jewelry Television).