In 1983, Jerry Chambers, a wealthy member of the class of 1928, and his wife Evelyn (class of 1932 and honorary member of the class of 1928), along with the class of 1928, gave a handsome endowment for the carillon. These funds were used to enlarge the instrument to a fully chromatic, five-octave instrument beginning with low G, renovation of two floors of Sather Tower for two practice keyboards, a campanology collection, and a studio for the University Carillonist. In addition, the Chambers Carillon funds, which is the sole source of support for the carillon program at Berkeley, endowed a full-time position for the University Carillonist (one of only five full-time positions in North America), and a carillon festival to be held every five years honoring the Class of 1928, counting from that year.