Complex sentence: Super Estrella was originally launched in 1997 on the 97.5 FM frequency and later simulcast on 97.5 FM and 103.1 FM in 2000.
Split into simpler sentences: Super Estrella was originally launched in 1997 on the 97.5 FM frequency. In 2000, a simulcast began on both 97.5 FM and 103.1 FM in 2000.