 Radio One purchased KRTS in September 2004, changed its calls to KROI, and flipped the station, first to a two-week long Hot AC format as simply "92.1 KROI" on September 15th, and then to Regional Mexican as "La Mera Mera" on September 29th.When that was unsuccessful, its owners, which mainly specialize in Urban radio formatted station ownership (with a majority African-American listener base), flipped it one more time to an urban gospel format branded as "Praise 92.1" at 6