 It operated in this role alongside the two XEWA-AM stations on 540 kHz in Monterrey and San Luis Potosí.By the 1980s, it was 50,000 watts at all hours with a directional nighttime pattern, though in the 2000s it returned to a lower power at night with 10 kW.The AM-FM migration required the reinvention of XEWB, with its extensive service area, as a local station primarily serving central Veracruz.