WCBN-FM is the student-run radio station of the University of Michigan. Its format is primarily freeform. It broadcasts at 88.3 MHz FM in Ann Arbor, Michigan. WCBN is one of the longest-standing continuous practitioners of primarily free-form radio programming. "Freeform" radio format is best described as an approach that allows the individual radio programmer (or DJ) maximum, if not complete, latitude, in determining what is broadcast from moment to moment. WCBN's transmitter was upgraded to 200 watts in 1987, an FCC action that was delayed for several years after some disgruntled former station volunteers filed an extensive complaint letter which turned out to contain mostly erroneous information. The power increase had been deemed necessary after the FCC began threatening to reassign frequency positions of 10-watt Class D (Educational) stations like WCBN.