January 26th is Australia Day, a national holiday commemorating the arrival in 1788 of a fleet of 11 convict ships from Great Britain. They landed in Sydney Cove, raised the Union Jack and proclaimed British sovereignty over the eastern seaboard of Australia. Today the holiday is celebrated like our 4th of July, with parades, barbecues and a general sense of national pride (unless you're an indigenous Australian, some of whom refer to today as Invasion Day.) It wasn't until 1935 that all states and territories used the name Australia Day to mark the date. Not until 1994 did Australians consistently celebrate today as a public holiday.
4BK began broadcasting to Brisbane at 1290 AM in 1930. Five years later they moved to 1300 AM before settling at 1296 AM in 1978.
In 1990 the station became 4BBB and began broadcasting on the FM band at 105.3 as "B105."