For many years, 3GL was based in James Street, Geelong, but relocated after being granted the right to convert to the FM band in 1990.
Instead, a decision was made to adopt the moniker K-Rock for the station's commencement on the FM band at 95.5 MHz, on 27 January 1990.
Test transmissions commenced intermittently in December 2023, using the station ID sweepers from the 70's and 80's "West Coast's 3GL 1341" and "Classic Hits 3GL Geelong", then continuously from New Years Day 2024.
K Rock was also among the first commercial FM stations to cover AFL football[citation needed], along with 3KKZ (KZFM) the same year.
The lineup included Ted Whitten, Sam Kekovich, Billy Brownless and Dwayne Russell, K Rock continues to focus on Geelong Football Club matches.
Originally owned by Hoyts, which operated Triple M brand in Australia, K Rock was sold to Grant Broadcasters in the mid-1990s.