Folks,
I am, to say the least, mystified.
I hope Lead Balloon will comment, because it seem to me that the CASA reply implies that the default radio call in G are nil, but I think the LB view that the radio calls required is nil is a bit contentious.
In my view, taken as a whole, various regulations that require a radio equipped to keep a listening watch, CAR 166 (and others??) can be interpreted as requiring "some" radio calls, is the "legal" minimum nil if you have a serviceable VHF.
It doesn't address the core issue of the legal action mounted by Dick, that VFR aircraft in G should not be using ATC frequencies, but 126.7, at uncharted airfields.
Tootle pip!!