 After a month on the air, the call sign switched to WMMO.The station derives its call letters from WMMS in Cleveland; the founding programmer and chief engineer, Cary Pall, was a fan of WMMS, and secured the call sign to honor the legendary rock station, even though WMMO's format was not as rock-oriented.WMMO was one of only two radio stations in the world broadcasting from a fully enclosed transmitter.