 XEUN-FM signed on July 16, 1959, from a transmitter located on the Torre Rectoría (Rectory Tower), broadcasting with 1 kW of power.XEUN-FM's power was increased to 50 kW when the station moved to new facilities in 1976.In 1992, the FM station moved to a new tower in Ajusco, on land that had been donated to UNAM in 1986 by the government of the Federal District; the move decreased the station's power to 35 kW, which then jumped to its current 100 kW with another new transmitter in 1995.