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KTPX-TV, virtual channel 44 (UHF digital channel 28), is an Ion Television owned-and-operated television station serving Tulsa, Oklahoma, United States that is licensed to Okmulgee. The station is owned by Ion Media Networks. KTPX maintains offices located on East Skelly Drive in Tulsa, and its transmitter is located near Mounds. On cable, the station is available on Cox Communications channel 4 in standard definition and digital channel 1004 in high definition.
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History
The station first signed on the air on July 3, 1997, as KGLB-TV; it originally carried programming from Paxson Communications' (now Ion Media Networks) infomercial service, the Infomail Television Network (inTV). The station became a charter owned-and-operated station of Pax TV (now Ion Television) when the network launched on August 31, 1998; on that date, the station changed its call letters to KTPX-TV (the KTPX calls were previously used by NBC affiliate KWES-TV in Midland, Texas from 1981 to 1993).
Digital television
The station's digital signal is multiplexed:
Analog-to-digital conversion
KTPX-TV shut down its analog signal, over UHF channel 44, on June 12, 2009, the official date in which full-power television stations in the United States transitioned from analog to digital broadcasts under federal mandate. The station's digital signal remained on its pre-transition UHF channel 28. Through the use of PSIP, digital television receivers display the station's virtual channel as its former UHF analog channel 44.