The station's callsign refers to G reat B lue H ill (the highest point in the Boston area at an elevation of 635 feet ), a location in Milton that served as the original location of WGBH-TV's transmitter facility and where the transmitter for WGBH radio continues to operate to this day (the callsign is occasionally jokingly referred as "God Bless Harvard", although the station's connections with the university are at best indirect; Harvard was one of several Boston-area universities which took part in the Lowell Institute Cooperative Broadcasting Council and rented space to WGBH on Western Avenue in Allston for the station's studio operations).