XHTVM-TV (Canal 40), currently known as ADN 40 (derivative from Azteca, Deportes y Noticias) is an television channel of Mexico from Mexico City. Founded in 19 of June 1995 by Televisora del Valle de México as a news channel. It was owned by CNI (Corporación de Noticias e Información) twice from 1995-2002 and 2003-2005. And currently owned by TV Azteca three times.
On July 29, 1998, CNI partnered with TV Azteca, becoming "Azteca Cuarenta", TV Azteca's third channel for 19 months.
CNI Canal 40 (second era)
Later on July 16 2000, CNI break the TV Azteca's ties to become as a independent TV station, starting the conflict known as "El Chiquihuitazo" for six years.
Azteca Cuarenta (second era)
December 2002-January 2003
On 27 of December 2002, TV Azteca gave the XHTVM license for less than one month, making one of the shortage of Mexican broadcasting.
CNI Canal 40 (third era)
January 2003-May 2005
Then on January 24, it was owned by CNI for the second time, and continued broadcasting for 28 months.
May 2005-February 2006
On 19 of May 2005, this logo started as a first HDTV broadcasting, but it remain unofficial due to the transmission shutdown until February 2006. The reason was a political criticism that was a hiatus protest for nine months.
On 21 of February, TV Azteca began transmiting as a news and forum channel for 11 years, with a name of Proyecto 40, spreading the Mexican country as a TV network.