Not only does this section look at 3DB's pre-war history, but it also shows how initiatives that began during this era and were extended into later eras. Therefore, on 23 November 1978, most Australian stations changed their frequencies and 3DB went to 1026 kHz. However, the Geneva Frequency Plan of 1975 changed this to a 9 kHz gap, thus allowing more stations on the AM band. Until 1978 there was a 10 kHz gap between radio stations. When seven new Australian broadcasting licences were issued in 1935, including 3XY in Melbourne, most Melbourne stations were allocated new broadcast frequencies 3DB was allocated 1030 kHz. Upon opening in 1927, 3DB broadcast on the AM band at a wavelength of 254 metres, corresponding to a frequency of 1180 kHz. DB = Druleigh Business and Technical College Pty LtdģDB was a Melbourne-based radio station that opened in 1927, changed its name to 3TT in 1988, and now operates on the FM band as KIIS 101.1.ģDB was one of Melbourne's most popular radio stations, topping the ratings for many decades.

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