Ok CaptainMidnight, sure that makes sense when explained like that but it seems like a fairly over complicated system which increases the risk of 2 aircraft not being on the right frequency. I haven't been back in Aus for a few years but when I was outback it was simple, unless an aerodrome had it's own frequency you use 126.7, simple, I just don't see what possible issue this solves?
I operated around Arnhemland and on a busy day you could have 6 relatively close airstrips all with someone coming, going or both and very rarely did we ever have any particular problems, I can imagine an area like Arnhemland becoming exceptionally confusing now.
So if there is a problem they will direct it be published and that takes how long for it to be published and even then everyone is using slightly different charts for a while so therefore if there is a problem Strip that needs to be published on all relevant charts that problem is left un-fixed for perhaps up to a year whilst the relevant red tape is sorted, the maps finally get printed and everyone updates their maps.
It just seems very silly and all for no particular reason.