I think I’ll leave this one to CASA to ‘fix’…
For my part, here’s what I’d do if wasn’t a wheelchair-bound geek from Hicksville USA.
On taxiing at my property at Sandlewood Park I’d be monitoring the Area frequency and Mildura CTAF. I’d transmit this on the Area frequency: “All stations, alpha bravo Charlie, a VFR Cessna 192, is taxiing at Sandlewood Park, one seven miles to the West of Mildura, for Menindee to the North East, niner thousand fife hundred.”
Any broadcast on 126.7 would seem to me to be a waste of breath and electromagnetic radiation.