Hi Anthony
The frequencies I mentioned in the set are in the Outpost Service spectrum, amateur radio ops arn't allowed to operate in that area. Their licence doesn't cover that part of the spectrum.
What you need is an Outpost Mobile licence available from ACMA. Irrespective of that, in an emergency to life limb or property, you are permitted to use any equipment and frequency you have available, whether the equipment or operator is licenced or not.
Your other option would be to join VKS737 which gives you a licence to operate on their frequencies (you need to have the redundant RFDS channels replaced by:
5455 kHz
3995 kHz No sked traffic - free for general & telephone use by authorised VKS-737 subscribers.
6796 kHz No sked traffic - free for general & telephone use by authorised VKS-737 subscribers.
8022 kHz The primary channel for all skeds.
10180 kHz No sked traffic - free for general & telephone use by authorised VKS-737 subscribers.
11612 kHz
14977 kHz
Keep the active RFDS frequencies to fill the remaining chanel slots. IIRC the 7727 is crystal locked, so you need to acquire the correct ones and swap them over. (Someone with arte et mente should be able to do that.

, someone like me is usually manu et frangimus)
Diana
VK2FVRC
VKS737 mobile 0300