XHTM-TDT

XHTM channel 10 started life with a different callsign and channel number. In late 1952,[2] XEQ-TV channel 9 took to the air; owned by Emilio Azcárraga and bearing the callsign of his XEQ AM radio in Mexico City, it was the second television station outside of the nation's capital (preceded only by XELD-TV in Matamoros) and the nation's fourth. The original concessionaire was Radio Panamericana, S.A., making it a direct sister station to XEQ radio.[3] The transmission from Paso de Cortés (Cortez Pass), 13,405 feet (4,086 m) high, was said to make channel 9 the world's highest television station.[4] The sign-on of XEQ-TV was the first step in the development of a national relay network, reaching an additional three million people. Not long after, Romulo O'Farrill built his own relay station on the mountain, XEX-TV. The establishment of XEQ thus led to Televisa's massive system of relay stations covering most of Mexico.

In 1985, XEX-TV and XEQ-TV were affected by a series of moves that added a VHF channel to the Mexico City area. Mexico City had channel 8, then known as XHTM-TV. XHTM moved to channel 9, taking on the XEQ-TV callsign. A new television station was placed on channel 7, Imevisión's XHIMT-TV. To accomplish this move, XEX-TV was relocated to channel 8 and XEQ-TV to channel 10, picking up the XHTM callsign discarded in Mexico City.[3]

In 1994, XEX and XHTM were joined on the mountain by a third Televisa station, XHATZ-TV (channel 32), as part of a 62-station concession used to help take XEQ-TV's signal national.[5]

Digital operations for Televisa's Altzomoni stations—XEX, XHTM and XHATZ—were based in Puebla proper until 2015.[6]

XHTM operates one of Mexico's most extensive networks of repeaters:

• Televisa Puebla