It carries out this goal through ownership of a nationwide network of transmitters and the management of its own public television channel, Canal Catorce.
By 2010, two major public television stations existed in Mexico: the National Polytechnic Institute's Once TV and Conaculta's Canal 22.
The National Autonomous University in Mexico also operated low-powered test broadcaster XHUNAM-TDT channel 20 and the TV UNAM pay-TV network.
As a result, on March 31, 2010, a decree established the Organismo Promotor de Medios Audiovisuales (Promoting Organization for Broadcast Media, OPMA) to build new digital-equipped transmitter facilities, with the goal of increasing national coverage of public television in Mexico.
XHSPO-TDT—the first on air of the 2015 transmitters—began official broadcasts on May 19, 2021, from the Canal Once transmitter site on Cerro de la Pila in Gómez Palacio, Durango.
[9] The largest expansion in SPR history was approved by the Federal Telecommunications Institute in June 2021, with the award of concessions for 24 new TV transmitters.
On June 1, XHCPCN-TDT in Ciudad Juárez went into service, transmitting from the XHUAR-FM antenna of the Instituto Mexicano de la Radio.
In October 2015, the SPR signed a contract with Grupo Intermedia, owner of XHILA-TDT and XHIJ-TDT, in order to expand the coverage of Una Voz con Todos into Mexicali and Ciudad Juárez, neither of which had ever had national public television service.
[20] While the SPR prefers to build its own transmitters, the length of time needed to obtain a concession, as well as spectrum availability in the border markets, makes a subchannel plan more effective.
The SPR held concessions to build stations at 88.7 in Tehuacán (XHTHP-FM) and 104.7 in Matías Romero, Oaxaca (XHMRO-FM), which were surrendered to the IFT in 2019.
It was removed from transmitters outside of the third wave in order to meet IFT standards on minimum digital broadcasting bitrate that did not allow stations using MPEG-2 compression to handle one HD and four SD channels on a single multiplex.