 With the new frequency came an expansion to seven hours a day, six days a week, with the station off the air for university holidays and on Sundays.In 1956, XEUN and XEYU went off the air for five months to permit reconstruction of the AM and shortwave stations.When they returned in October, the new facilities expanded the coverage of what was then known as Radio Universidad to most of the country, while broadcasts now extended to 10 hours a day Monday-Saturday and 12 hours a day on Sundays; the next year, the station would expand its broadcast day again, to 12 hours a day seven days a week.