Page "Very high frequency" Paragraph 20

Two new VHF frequencies, 9A and 12, have since been made available and are being used primarily for digital services ( e. g. ABC in capital cities ) but also for some new analogue services in regional areas.

Because channel 9A is not used for television services in or near Sydney, Melbourne, Brisbane, Adelaide or Perth, digital radio in those cities are broadcast on DAB frequencies blocks 9A, 9B and 9C.