Brisbane: 4BBB

Radio station 4BK was Brisbane’s second commercial station when it launched in September 1930. The station originally broadcast on the frequency 1290 kHz and moved up the dial slightly to 1300 kHz, before moving back to 1296 kHz in 1978.

By the late ‘80s, 4BK had been bought by the Austereo network with the hope of successfully bidding for a licence to convert to the FM band. Up until then the only commercial FM station in the Brisbane market was 4MMM which started back in 1980.

Austereo was successful in gaining a licence to convert 4BK to FM and on 26 February 1990, B105 (call-sign: 4BBB) was born on the frequency 105.3 MHz.

This logo would represent B105 for over a decade:

Within two ratings survey periods of its launch, B105 had taken the old 4BK from a modest rating to be ranked Number One and B105 would continue to top the Brisbane radio ratings until 2004.

In the most recent radio ratings survey for Brisbane, B105 regained the Number One position.

4BBB and 4MMM are both owned by the Austereo network.

Website: B105