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3DB (Melbourne) AI simulator
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Hub AI
3DB (Melbourne) AI simulator
(@3DB (Melbourne)_simulator)
3DB (Melbourne)
3DB 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.
3DB was one of Melbourne's most popular radio stations, topping the ratings for many decades.
Upon opening in 1927, 3DB broadcast on the AM band at a wavelength of 254 metres, corresponding to a frequency of 1180 kHz. 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. Until 1978 there was a 10 kHz gap between radio stations. However, the Geneva Frequency Plan of 1975 changed this to a 9 kHz gap, thus allowing more stations on the AM band. Therefore, on 23 November 1978, most Australian stations changed their frequencies and 3DB went to 1026 kHz.
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.
3DB was awarded its broadcast licence in 1925 but did not immediately come on air due to debates in Federal Parliament as to whether or not Australia should proceed with the then-unique system of A Class (later ABC) and B Class (later commercial) stations. The station eventually made its on-air debut on 21 February 1927 in a fairly low-key manner.
In the 1920s, at most stations including 3DB, it was not unusual for there to be breaks between programs during which the station temporally closed down. Sometimes these breaks were of 30 minutes' duration; sometimes longer. However, within just a few years, such breaks were eliminated and 3DB (and most other Melbourne commercial stations) broadcast for set times during each day. By 1934, 3DB was on air at the following times:
Between 12.30 and 2.30 pm on Sundays all mainstream Melbourne commercial stations were required by the Postmaster-General's Department to close down. Amateur radio stations which normally broadcast on the shortwave band were permitted to use the medium wave (AM) band during these hours. 3AK which usually only broadcast after other Melbourne stations had closed down, also broadcast between these two hours. ABC stations 3AR and 3LO did not take the break between 12.30 and 2.30 on Sunday afternoons. This arrangement appears to have been exclusive to Melbourne.
By the Post-war era, 3DB's hours had been extended to:
3DB (Melbourne)
3DB 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.
3DB was one of Melbourne's most popular radio stations, topping the ratings for many decades.
Upon opening in 1927, 3DB broadcast on the AM band at a wavelength of 254 metres, corresponding to a frequency of 1180 kHz. 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. Until 1978 there was a 10 kHz gap between radio stations. However, the Geneva Frequency Plan of 1975 changed this to a 9 kHz gap, thus allowing more stations on the AM band. Therefore, on 23 November 1978, most Australian stations changed their frequencies and 3DB went to 1026 kHz.
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.
3DB was awarded its broadcast licence in 1925 but did not immediately come on air due to debates in Federal Parliament as to whether or not Australia should proceed with the then-unique system of A Class (later ABC) and B Class (later commercial) stations. The station eventually made its on-air debut on 21 February 1927 in a fairly low-key manner.
In the 1920s, at most stations including 3DB, it was not unusual for there to be breaks between programs during which the station temporally closed down. Sometimes these breaks were of 30 minutes' duration; sometimes longer. However, within just a few years, such breaks were eliminated and 3DB (and most other Melbourne commercial stations) broadcast for set times during each day. By 1934, 3DB was on air at the following times:
Between 12.30 and 2.30 pm on Sundays all mainstream Melbourne commercial stations were required by the Postmaster-General's Department to close down. Amateur radio stations which normally broadcast on the shortwave band were permitted to use the medium wave (AM) band during these hours. 3AK which usually only broadcast after other Melbourne stations had closed down, also broadcast between these two hours. ABC stations 3AR and 3LO did not take the break between 12.30 and 2.30 on Sunday afternoons. This arrangement appears to have been exclusive to Melbourne.
By the Post-war era, 3DB's hours had been extended to: