Dick Smith wrote:
"I phoned the head of Airspace and Aerodromes at CASA. Peter Cromarty and he informed me that it was not his decision and I should talk to the operations people. I did this and was told that CASA was correct and at unmarked aerodromes the calls must be on the Area Frequency."
(My emphasis.)
I'm always prepared to apologise for my ignorance, if I'm wrong.
But isn't this pretty well what Creampuff has been arguing about, all along?