In May 3013 The Australian Communications and Media Authority announced changes to frequency ranges used for wireless microphones.

From January 1 2015, a range of wireless systems will no longer be supported. Systems affected will be wireless audio products such as wireless microphones, wireless in-ear systems and / or wireless intercom systems known as “700MHz” systems.

From the ACMA website
It has become a necessary consequence of the introduction of new 4G broadband mobile services across Australia into the digital dividend.’

The changes to the class licence:

  • mean that after 31 December 2014, wireless audio transmitters (including wireless microphones) will no longer be authorised to operate in the frequency range 694-820 MHz (the digital dividend band)
  • introduce new arrangements supporting the use of digital wireless audio transmitters in the frequency range 520-694 MHz
  • introduce new arrangements supporting the use of wireless audio transmitters operating in the frequency range 1790-1800 MHz.

For up to date information and guidance on your system, visit the ACMA website