Sennheiser Australia

Digital Dividend comes into Operation

From the first of January 2015 frequencies between 694 MHz and 820 MHz will no longer be available for Wireless Microphones or In Ear Monitor systems. This website offers you information to help you find the best hardware and software solutions from Sennheiser to use after the Digital Dividend comes into operation.

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The Change

  • Digital Dividend comes into Operation

    From the first of January 2015, a part of the UHF spectrum currently used for wireless microphones will be reserved for mobile voice and data applications. Consequently, no Wireless Microphones or In Ear Monitor systems will be able to operate between 694 MHz and 820 MHz.

    From the first of January 2015, your Wireless Microphones and In Ear Monitor systems will need to operate on frequencies not used by TV stations, between 520 MHz and 694 MHz. This will ensure your systems operate reliably and that you stay within the law.

  • Digital Dividend comes into Operation

    Digital TV and Wireless Audio Systems will share the spectrum between 520 MHz and 694 MHz when the Digital Dividend begins operation on January 1, 2015.

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The Impact

  • What is the Impact?

    The UHF spectrum available for Wireless Microphones and In Ear Monitor systems will be more congested and all users will have to share the range between 520 MHz and 694 MHz with the Digital TV stations. Because the frequencies of the TV transmitters will also change, even some existing wireless systems operating between 520 MHz and 694 MHz may no longer work without interference or be legal, depending where they are being used.

  • What is the Impact?

    What are the uses of the UHF band today?

    The current primary use of the UHF band between 520 MHz and 820 MHz is for Digital Free to Air Television broadcasting (FreeTV). Wireless Microphones and In Ear Monitor systems also use this band, sharing it with the TV broadcasters. The TV broadcasters have priority use of these frequencies. Users of Wireless Microphones and In Ear Monitor systems are secondary users, conditional on them not interfering with the reception of Free to Air TV broadcasts.

    Will frequency changes continue in the UHF band?

    Yes, until the end of 2014. Digital Free to Air TV broadcasts began in Australia in 2009. All analogue TV transmitters were turned off by the end of 2013. 6 Digital TV channels will be deployed in most TV service area across Australia by the end of 2014. In some areas there will be 9 Digital TV Transmitters in a service area. These 6 (or 9) channels will all be on adjacent frequencies in a TV service area. Each channel will occupy 7 MHz of bandwidth, so these 6 (or 9) channels will occupy a block of frequencies 42 MHz (or 63 MHz) wide. (6 (or 9) channels of 7 MHz each). In some areas there will be a Block of 6 channels (42 MHz) and a separate Block of 3 channels (21 MHz).

    What are the new uses of the UHF band after the 1st of January, 2015?

    The end of analogue Free to Air TV broadcasting, the introduction of Digital Free to Air TV and the re-stack of the TV frequencies has freed a frequency range between 694 MHz and 820 MHz. This range of frequencies is known as the Digital Dividend. From the 1st of January 2015, across Australia, this band will be assigned for the deployment of mobile voice and data services. Two frequency bands are used: 703 MHz to 748 MHz and 758 MHz to 803 MHz. The 10 MHz space between these two blocks is called "The Mid-Band Gap".

    How do I find ut what frequencies are used by DTV in my area?

    There are two excellent resources available to help you select the best frequencies to use for your wireless microphones after January 1, 2015.

    frequencyfinder.com.au This web site will show you which frequencies are in use in a particular area today, and also after the DTV Re-Stack.

    myswitch.digitalready.gov.au This Government web site shows you the expected TV coverage in an area from each DTV transmitter. This can help you understand what transmitters can be “seen” at a location, thereby helping you interpret results from other sources.

  • What is the Impact?

    What are the legal requirements for the use of wireless microphones in the UHF band?

    In Australia Wireless Microphones and In Ear Monitor systems currently operate under what is called a Class Licence as a Low Interference Potential Device (LIPD). Within this Class Licence, Wireless Microphones and In Ear Monitor systems operate under Item 22A. There are some conditions that apply under Item 22A, including maximum power of 100mW, maximum bandwidth of 330KHz, you cannot transmit on the same frequency as a TV transmitter licenced for that area and if you transmit on a frequency adjacent to a TV transmitter licenced in that area you must be at least 400 KHz away from the upper and lower edges of that TV transmitter frequency range.

    The new LIPD Class Licence, was gazetted mid-2013 and brings with it some changes. These changes include the following:

    1. Wireless audio transmitters must not be operated in the frequency range 694-820 MHz after 31 December 2014.
    2. After 31 December 2014, wireless audio systems in the UHF band must operate between 520 MHz and 694 MHz.
    3. Digitally modulated wireless audio transmitters are now allowed.
    4. A new frequency band of 1790 - 1800 MHz has been opened up for use by wireless audio devices.
  • What should we use?

    So how do you choose a wireless microphone in the range from 520 to 694 MHz?

    You must select a system which can operate on frequencies that are not used for Free to Air TV broadcasts in the location where the Wireless Microphones and In Ear Monitor systems will be used. Wireless Microphones and In Ear Monitor systems operate at a far lower power than television transmitters: not using frequencies allocated to Free to Air TV will avoid interference from these more powerful transmitters. Also, because Wireless Microphones and In Ear Monitor systems are secondary users they should not in any way interfere with television reception.

    The range of Sennheiser products includes models that are compatible with the frequencies that will be available in different areas across Australia.

    A new range of equipment has been introduced to take advantage of the new clear spectrum between 1790MHz and 1800MHz.

    The following range will be used for Wireless Microphones and In Ear Monitor systems:

    • The UHF range from 520 MHz to 694 MHz shared with Free to Air TV broadcasting.
    • The range between 1790 MHz and 1800 MHz.
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The Solution

  • Look for the "DD Ready" Brand from Sennheiser

    Sennheiser is a recognised standard and world leader in the field of Wireless Microphones and In Ear Monitor systems. No other wireless system has a wider tuning range at any price point than Sennheiser. The result is great flexibility on site and the ability to operate within the legal frequency framework.

    Sennheiser is therefore in the best position to create the concept of "DD Ready". Now that the DTV Block allocations have been announced, with Sennheiser "DD Ready" Wireless Microphones and In Ear Monitor systems, you can be sure that:

    • Your wireless microphone & In Ear Monitor systems will deliver the functionality and reliability you demand.
    • You will be operating within the law.

    For confidence and peace of mind, you won't find a better solution than Sennheiser "DD Ready" Wireless Microphones and In Ear Monitor systems.

  • "DD Ready" Wireless Systems from Sennheiser

    • The XSW Series

      Two frequency ranges, 12 compatible frequencies per range
      24 MHz switching bandwidth

    • The Evolution G3 Series

      Three frequency ranges, up to 32 compatible frequencies per range
      42 MHz switching bandwidth

    • The 2000 Series

      Three frequency ranges, up to 60 compatible frequencies per range
      Up to 72 MHz switching bandwidth

    • The 3000/5000 Series

      Two frequency ranges, up to 60 compatible frequencies per range
      Up to 184 Mhz switching bandwidth

  • "DD Ready" Wireless Systems from Sennheiser

    The ACMA has published which DTV Block of frequencies will be allocated to which geographic area, so it is now possible to tell which microphone's frequency range will work in a particular location in Australia.

    In some areas more than one DTV Block has been allocated to ensure reliable DTV reception across that TV market area.

    It is POSSIBLE that there will not be a single wireless audio system frequency band that will work right across all of Australia. For national coverage in the regular UHF Band between 520 MHz and 694 MHz it is likely that you will need more than one set of wireless audio equipment, with each set in a different frequency band.

    Equipment operating in the 1790MHz to 1800 MHz band will operate successfully anywhere in Australia.

    You can check out what frequencies will be best in any location across Australia by looking at www.frequencyfinder.com.au

  • "DD Ready" Wireless Systems from Sennheiser

    Monitor and control all your Sennheiser Wireless Microphones and In Ear Monitor systems with Sennheiser Wireless System Manager (WSM) software for Mac and PC:

    Sennheiser WSM is a solution for monitoring and remote control of all Evolution 300 G3, Evolution 500 G3, 2000 Series and 3000/5000 wireless microphone and IEM systems. The WSM software can scan the RF environment, display the free frequencies of the pre-set banks and then automatically set up the connected devices to operate flawlessly. In the toughest situations, the WSM will calculate a frequency plan free of intermodulation products to optimize the use of the available spectrum. WSM is a complete tool kit to help you make the most of Sennheiser’s advanced wireless feature set.

    Control Protocols are published for Evolution 300 G3, Evolution 500 G3 and 2000 Series wireless systems, so they can be easily integrated with third party control systems for complete audio visual integration.

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Stay in touch

If you would like to receive updates please provide your details below and we will send you more details as they become available.

  • UHF wireless microphones - What is changing on the 1st of January 2015
  • Register for updates today! - Click here
  • Click here to be DD Ready with our trade in deals!
  • Frequency Finder - Select the right frequency available