Mother's Day digital radio promotion           Finalists announced for best radio ad of the year           Entries open for Radio Awards to be held in Melbourne           M&Ms Xmas campaign wins Sirens round 5           First radio ratings survey results for 2014 released today           Gold Standard software providers fully accredited           Final chance to enter best radio ad of the year in Siren Awards           $2 million of commercial radio support begins for First Break winner ILUKA           Interim fee not enough - record companies take radio back to Tribunal           Regional commercial radio stations put listeners first           Local regional radio stations switch off simulcasts and metros on notice           Australians continue love affair with radio in the car           Regional radio survey provider panel announced           Sydney indie band Castlecomer wins "First Break"           2014 Survey Dates           Marketforce and Internode team up again to win fourth round of 2014 Sirens           Radio industry looks to a smooth transition in 2014           Digital radio reception to improve in major cities           Radio industry announces Stage 1 Gold Standard software providers           Digital radio listening at an all time high           Re-elected CRA Board calls for less regulation           Ground-breaking new research demonstrates radio effectiveness          




  Digital Radio Plus Australian Commercial Radio Awards Siren Awards  
         
  First Break National Radio Conference    

 

  




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Commercial Radio Australia Limited 2014



 

How do AM, FM and Digital Radio Broadcasts differ? 

Often people wonder what the difference is between AM and FM. The only difference is technical. AM and FM refer to a technical method used to superimpose sounds, such as music and speech, on to a radio.

AM (amplitude modulation) is a system of radio transmission in which the carrier wave is modulated by changing its amplitude. The operating frequency is expressed in kilohertz (kHz).

FM (frequency modulation) is a broadcasting mode in the VHF (very high frequency) broadcasting bands. It provides a high quality analogue signal, and is relatively free from static, in which the frequency of the transmitted wave is modulated or varied in accordance with the amplitude and pitch of the signal. The operating frequency is expressed in megahertz (MHz).

Digital Transmitting
Digital radio is the next generation of radio. It is a revolutionary audio broadcasting technology, which dramatically improves sound quality, and will enable you to receive value added radio services for free.

Digital is a new way of transmitting and receiving radio signals. It turns sound and data into digital signals at the transmission end. These are broadcast over the airwaves and a digital radio receiver decodes the signal into CD quality sound with data enhancements including text information and graphics. Listeners will need to buy a digital radio receiver to tune in, as existing analogue AM/FM receivers cannot tune digital. More at www.digitalradioplus.com.au.

 

 



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Commercial Radio Australia Limited | ACN 059 731 467 | ABN 52 059 731 467

Commercial Radio Australia Ltd, Level 5, 88 Foveaux Street, Surry Hills NSW 2010 Australia
Phone: (02) 9281 6577 Fax: (02) 9281 6599 Email: mail@commercialradio.com.au