In some form, TV4 programming reaches more than 3 million viewers both in Mexico and abroad, including in the United States.
[1] In December 1979, the state government and the Dirección General de Radio, Televisión y Cinematografía (RTC), then in charge of the Televisión Rural de México network, agreed that TRM programming and broadcasts would be regionalized to deliver information oriented specifically to address needs of the local population.
Two years later, the first broadcasts through TRM's regional network provided local programming for one hour daily.
By then, it included stations in León, Guanajuato and San Miguel de Allende, all of which are now part of the university's radio network.
TV4 programming is available to Guanajuatense audiences abroad via Mexicanal and Canal Sur México; in the US, broadcasts are also available from DirecTV and though multicasting.