 The station was previously Oldies-formatted WSHE and WEBG, and prior to that, the frequency was home to Album Oriented Rock station WDIZ since 1971.On April 19, 2017, WRUM-HD2 launched a bilingual CHR format, branded as "Boom 97 Uno" (simulcast on translators W246BT 97.1 FM Clermont and W246CK 97.1 FM Kissimmee).However, due to a trademark claim by Radio One (which uses the "Boom" brand for its classic hip hop stations), the stations rebranded as "Oi2 97 Uno" (pronounced "Oidos") on May 4, 2017.