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Triple M Adelaide
5mmm logo.png
CityMount Lofty
Broadcast areaAdelaide
SloganVariety Like You've Never Heard Before
Frequency104.7 MHz FM
Repeater(s)98.3 MHz FM (Adelaide Foothills)
First air date25 March 1927 (1927-03-25) (as 5KA)
FormatActive rock
ERP20 kW
2 kW (rerun)
Transmitter coordinatesCoordinates: 34°59′02″S 138°42′30″E / 34.983808°S 138.708315°E / -34.983808; 138.708315
Former callsigns5KA (1927–1990)
5KKA (1990-1993)
Former frequencies1200 kHz (1927–1978)
1197 kHz (1978–1990)
AffiliationsTriple M Network
OwnerSouthern Cross Austereo
Sister stationsHit107
WebsiteOfficial website

5MMM (identified on air and in print as Triple M) is a radio station broadcasting in Adelaide, Australia. Its target demographic is the 30-54 age group. Triple M Adelaide is part of Southern Cross Austereo's Triple M Network and broadcasts on the 104.7 MHz frequency.

Triple M Adelaide has in the past simply networked the majority of its shows from its Sydney and Melbourne counterpart stations, but since 2011 it has focussed more on local content.


5MMM had its origins as an AM radio station, commencing broadcasting as 5KA on 25 March 1927 on the frequency 1200 kHz.

In 1941 the station and its repeater 5AU, along with interstate stations 2HD and 4AT, were closed by the Federal Government after allegations of fifth column activities. These stations were associated with the Jehovah's Witnesses, which opposed participation in the War, and had other doctrines seen as un-patriotic.[1] In 1943 5KA was reopened after purchase by the Methodist Church, and became attached to the Central Methodist Mission, largely organised by Reverend Samuel Forsyth. The station changed frequency to 1197 kHz in 1978.

In the early 1980s, 5KA adopted a country music format and re-branded itself 12K. The format was short-lived.

On 1 January 1990, 5KA became the first of two commercial AM radio stations in Adelaide to convert to the FM band. The station bid $5.5 million in a priced based allocation process the previous year for the FM licence. 5KA moved to the frequency 104.7 MHz and the AM frequency was relinquished. With the FM conversion, the 5KA call-sign was changed to 5KKA and the station was branded on-air as KAFM. The AM frequency was re-purposed and allocated to a community broadcasting licence, 5RPH. The former transmission equipment which was co-located with competitor 5AD at the time was handed over to the operators contracted to provide transmission facilities to 5RPH, but the infrastructure was effectively abandoned.

In 1993, Hoyts Media which owned the Triple M radio network in the eastern states had bought 5KKA but could not adopt the Triple M call-sign in Adelaide as a community radio station already had the call-sign 5MMM. Hoyts then paid 5MMM for the right to use the Triple M name. The community station 5MMM then converted to 5DDD, and 5KKA was then free to change its call-sign to 5MMM and adopt the Triple M network brand. With the merger of the Hoyts Triple M network into the Austereo Network, the station became a sister station to SAFM, and relocated to the ground floor of the building that was partly occupied by SAFM at the time.

As of 2014, it had reverted to a classic rock format comparable to similar formats in the eastern states.

Digital radio[edit]

Since September 27, 2014, Triple M is simulcast on Digital Radio in Adelaide.

During AC/DC's 2010 Australian tour, Triple M aired High Voltage Radio, a "pop up" digital radio station that exclusively played AC/DC.[2] High Voltage stopped being aired at the conclusion of the tour on 15 March 2010.


  1. ^ "Radio Ban to Stop Leakages". The Sun (Sydney) (9677). New South Wales, Australia. 9 January 1941. p. 3. Retrieved 2 December 2017 – via National Library of Australia.
  2. ^ Austereo Adds Fourth Digital Radio Band [permanent dead link] - Perth Now, 10 February 2010

External links[edit]