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City of license San Luis Potosí, San Luis Potosí
Broadcast area San Luis Potosí
Branding Los 40 Principales
Slogan Toda La Actitud
Frequency 540 (kHz) / 103.9 (MHz)
First air date 1950
Format Spanish & English Top 40 (CHR)
Power 150,000 watts (AM)
ERP 25,000 watts (FM)
Affiliations Televisa Radio
Owner Grupo Radiorama

XEWA-AM and XHEWA-FM is a Mexican radio station that serves the San Luis Potosí area. It started broadcasting in the 1950s as a relay of XEW-AM 900 kHz in Mexico City, remaining so until the late 1980s when changes to the format occurred. Later the station became Ke Buena, broadcasting from San Luis Potosí to the entire Mexican Republic, being the most powerful station in Mexico with 250 kW of power. Currently the station is again a relay of XEX-FM with the moniker of "Los 40 Principales".


XEWA-AM is a 150 kW clear-channel station station, which covers the Mexican states of San Luis Potosí, Nuevo León, Tamaulipas, Coahuila, Zacatecas, Querétaro, Guanajuato and Aguascalientes. The station also has nighttime coverage throughout most of Mexico, as well as the neighboring American states of Texas and New Mexico.


These are the names of some of the formats that have been known to the station XEWA-AM 540 kHz:

  • XEW with the slogan: "The Voice of Latin America from Mexico."
  • Superstar W-A
  • Ke Buena
  • W Blue and Silver Chain
  • W Radio with the slogan: "W Radio, Radio in High Definition"
  • Los 40 Principales with the slogan: "With all attitude!"