IBOC is In-Band On-Channel (IBOC) digital radio operation for AM and FM broadcast stations. AM broadcast stations are limited at this time to digital operation during daytime hours, for now although this may change.
IBOC refers to the method of transmitting a digital radio broadcast signal centered on the same frequency as the AM or FM station's present frequency. For FM stations, the transmission of the digital signal occupies the sidebands above and below the center FM frequency (e.g., 97.9 MHz). AM band transmissions also place the digital signal in sidebands above and below the existing AM carrier frequency. By this means, the AM or FM station digital signal is transmitted in addition to the existing analog signal. In both instances, the digital emissions fall within the spectral emission mask of the AM or FM channel.
WEOK is not listed in the FCC data base as broadcasting in digital , nor is there an application for them to do so, So it is unlikely they are using IBOC .With their no show in the ratings, Disney programming aimed at the really young ,I doubt it would be worth the bother or the problems it would entail .