B105 (Brisbane)
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| City | Brisbane, Queensland |
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| Broadcast area | Brisbane Gold Coast Ipswich Sunshine Coast Tweed Heads |
| Branding | hit105 |
| Slogan | Hits & Old School |
| Frequency | 105.3 MHz FM (also on DAB+) |
| First air date | 29 September 1930 (4BK AM) 26 February 1990 (B105 FM) |
| Format | Top 40 (CHR) |
| Language(s) | English |
| ERP | 12,000 watts |
| HAAT | 365 m |
| Transmitter coordinates | 27°27′47″S 152°56′54″E / 27.46306°S 152.94833°E |
| Former callsigns | 4BK (1930-1990) |
| Former frequencies | 1290 kHz (1930-1935) 1300 kHz (1935-1978) 1296 kHz (1978-1990) |
| Affiliations | Hit Network |
| Owner |
Southern Cross Austereo (Today FM Brisbane Pty Ltd) |
| Sister stations | 4MMM |
| Website | Official website |
hit105 (call sign: 4BBB) is a commercial FM radio station broadcasting in Brisbane, Queensland, Australia, on a frequency of 105.3 MHz, and is part of Southern Cross Austereo's Hit Network. The station was previously branded as B105 following its conversion from AM to FM. This lasted until a co-branding as "Hit 105.3 B105", then as "Hit B105" and finally dropped the "B" reference to its present brand identity "hit105". The B had referred to Brisbane.
The station shares branding with SCA's Perth and Adelaide stations hit92.9 and hit107.
The station now known as hit105 began life as 4BK, commencing transmission on 1930 on the AM band, initially on the frequency 1290 kHz before changing to 1300 kHz on 1 Sep 1935 (to accord with the new Australian 10 kHz channel spacing raster). Again the implementation by Australia of the 9 kHz channel spacing raster developed by the ITU and formalised in the 1975 Geneva Plan necessitated 4BK moving to 1296 kHz on 23 November 1978.
In 1988, the Austereo group purchased the station from Hoyts, intending to use it as a vehicle to bid for an FM conversion licence. Austereo won the FM licence, and in February 1990, the station changed its callsign to 4BBB (not used on-air except during test broadcasts, unlike the previous AM callsign) and commenced broadcasting on a frequency of 105.3 MHz with the on-air name B105.
Between March 1990 until 2006 it was the highest rating station in Brisbane, except in one ratings survey in 1994, beaten by AM station 4KQ.
In April 2011 the Austereo Group was purchased by Southern Cross Media for more than $700 million, and is now operated under the name Southern Cross Austereo.
On Friday 6 March 2015, B105 rebranded as Hit 105.
The 4BK studio complex, an AM radio facility was located at 16 Campbell Street Bowen Hills. When the FM conversion license was granted, the Austereo group converted the premises to an FM facility and began broadcasting as B105 FM in 1990.
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Wikipedia