On October 27th, Mexican TV stations aligned their virtual channel numbers with their network identifications. After re-scanning channels, you’ll find, for example, XHTJB Tijuana, physical channel 21, identifies now as 11-1 since it broadcasts Canal Once from Mexico City, replacing its most recent virtual channel number as 3-1. That last number had been its analog channel. XHJK, Azteca 13, physical channel 28, now identifies as 1-1.
Not all stations along the border are following this protocol. Tijuana’s Canal Las Estrellas, slated to be 2-1 throughout most of Mexico, was still 57-1 when last scanned. Stations were not re-identified if it was believed their virtual channel number would conflict with a US virtual channel ID.
US TV stations in major O&O markets at one time aligned their TV channel allocations with their mother networks. CBS stations signed on channel 2, NBC channel 4, DuMont channel 5, and ABC channel 7 wherever they could.