Radio is important in rural and less affluent areas of Mexico. A lot of people don't have computers, smart phones (a lot of areas don't have 4G coverage), or televisions. Mexico doesn't have any equivalent of CBC or NPR; the closest thing to it are some university stations. Community radio stations are a new idea, and their numbers are increasing.
There's an alternative form of radio that's been around for 40 years. Mexico's National Institute of Indigenous Peoples (Instituto Nacional Indigenista, or INI) created 21 radio stations, which broadcast in 31 indigenous languages. They are mostly AM and daytime-only. Six of them broadcast in Nahuatl, Mexico's most common indigenous language, spoken by 1.7 million people. Three of them broadcast in Yucatec Maya, spoken by 800,000 people.
Purépecha, spoken by 124,000 people, is way down the list. It is spoken in the highlands of the State of Michoacán, an area which includes Pátzcuaro, Uruapan, and Zamora. Their radio voice is XEPUR, "The Voice of the Purépecha", located in Cherán.