What is "xhdf-tdt"

XHDF-TDT is the over the air Azteca 13 network flagship station in Mexico City (Channel 13 analog and Channel 25 digital). Azteca 13 can be seen in most major cities in Mexico through its affiliates most of which are owned and operated by TV Azteca. XHDF provides HD programming to affiliates and cable and satellite viewers. Azteca 13 can also be seen on DirecTV in both Latin America and the United States. Azteca 13 also provides the United States Azteca America network with programming which sometimes can be seen simultaneously.