B105 FM

B105
MHz FM;
Branding	B105
Programming
Language(s)	English
Format	Adult contemporary, Hot adult contemporary
Affiliations	Hit Network
Ownership
Owner	Southern Cross Austereo; (Today FM Brisbane Pty Ltd);
Sister stations	Triple M
History
First air date	29 September 1930 (4BK AM); 26 February 1990 (B105 FM)
Former call signs	4BK (1930–1990)
Former frequencies	1290 kHz (1930–1935); 1300 kHz (1935–1978); 1296 kHz (1978–1990);
Technical information
Licensing authority	ACMA
Class	Commercial
ERP	12,000 watts
HAAT	365 m
Transmitter coordinates	27°27′47″S 152°56′54″E / 27.46306°S 152.94833°E
Links
Public licence information	Profile
Website	Official website

B105 (call sign 4BBB) is a

MHz, and is part of Southern Cross Austereo's Hit Network

. The station has undergone numerous branding changes over the years; it was 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 (dropping the "B" shortly after) and finally back to B105 in July 2020.

History

The station began life as 4BK, commencing transmission in 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

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 6 March 2015, B105 rebranded as Hit 105.[2] On 27 July 2020, Hit 105 rebranded back to B105.^[3]

Studios

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.

The B105 studio complex remained at the Bowen Hills location until July 2000, when Austereo relocated B105 and sister station

Axia Fusion

.

In June 2019, B105 moved from North Quay into new studios at The Barracks on

Petrie Terrace.^[5]

Transmission

4BBB's FM transmission has always emanated from the

Mount Coot-tha, Brisbane. The station originally used two Harris HT10 tube transmitters in an A/B failsafe configuration to deliver the service. In 2002 a new solid state Harris Z10CD transmitter was installed at the newly created TX Australia facility, located under the TVQ Ten tower. The existing HT10 transmitter now serves as a backup facility located at the BTQ

Seven tower, 1 kilometre (0.62 mi) away from Channel Ten on Mount Coot-tha. B105's service is licensed for 12kW

Effective Radiated Power

at the antenna, and operates its transmitters at 5kW base power.

B105 and Southern Cross Austereo's DAB services all emanate from the TVQ Ten tower on combined equipment used by all radio broadcasters in Brisbane.

On Air Schedule

6:00am–9:00am: Stav, Abby & Matt

9:00am–12:00pm: Brad

12:00pm–3:00pm: Ellie

3:00pm–6:00pm: Carrie & Tommy

6:00pm–7:00pm: Stav, Abby & Matt's Happy Hour

7:00pm–10:00pm: Jimmy & Nath

10:00pm–1:00am: The Pulse with Seany B & Emma G

External links

B105 official website

References

^ HAAT estimated from http://www.itu.int/SRTM3/ using EHAAT.
^ hit105 rebrands Radio Info 6 March 2015
^ Hit Network set for biggest overhaul in half-decade Radio Today 27 July 2020
^ Wilson, Bob (2 June 2000). "Office interiors on the boil". The Courier-Mail. p. 45.
^ Mediaweek (7 June 2019). "SCA Brisbane on the move". Mediaweek. Retrieved 10 June 2019.

[1] HAAT estimated from http://www.itu.int/SRTM3/ using EHAAT.

[2] t105 rebrands Radio Info 6 March 2015

[3] Hit Network set for biggest overhaul in half-decade Radio Today 27 July 2020

[4] Wilson, Bob (2 June 2000). "Office interiors on the boil". The Courier-Mail. p. 45.

[5] Mediaweek (7 June 2019). "SCA Brisbane on the move". Mediaweek. Retrieved 10 June 2019.

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