Warning, it is highly recommended to check with your dealer of the new frequency groups before purchasing any wireless microphones. The frequency allocation in Australia for secondary non licensed users, will be changing by the end of Dec 2012. Most radio microphone importers are aware of this but you don't want to be left with something you cannot use. It might be wise to look at investing new wireless systems soon and start selling off your existing ones on ebay to international buyers.
People have asked us if it would be possible to change the frequency groups of there existing wireless systems and the answer is NO! It is not economical or practical to carry out a change of this kind.