Back in the '50s I was a student engineer (had a 1st Class commercial phone ticket) at the Miami University (Ohio) campus radio stations. Our carrier current station, limited to campus only, was WRMU. Our FM station, still on the air, was WMUB. We engineers joked about "This is WRUM and WBUM, your Rum-Bum stations in Oxford, Ohio." Never on the air, of course.
A bit like my own experience in Champaign IL. We put our FM on the air in 1967, but we retained the carrier current operation, underway since 1953, as a separate program service. They kept the carrier current station, with its 16 or so transmitters around the campus, until around 1990.
It became the training ground for the FM operation, and programming standards there were, how shall I say this, a bit looser. ≤]B^)
The nonprofit corporation that owns the station also owns the daily student paper, the yearbook, and a couple other publications. They instituted a "Hall of Fame" a few years ago, and the pioneers of their stations are finally being recognized by induction into the HOF, along with all the old inkstained journos who made something of themselves.