WOCK-CD is the MundoFox affiliate for Chicago, Illinois in the United States. It is owned by KM Communications, and transmits on VHF channel 4. It is a sister station to WOCH-CA. The transmitter is located on the John Hancock Tower.

Read more about WOCK-CD:  Digital Television, History

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WOCK-CD - History
... a low-power digital television station, WOCK-CD, on channel 4, radiating primarily to the southwest ... latter dropped the network it shortly after began its run on WOCK-CD's subchannel, 13.3 ...