Welcome to the forum Mike
Well it is a big ask for us Europeans really as we cannot see the sats you can as they are below our horizon.
Thinking about the problem logically for a moment your mobile unit can only work similar to a motorised system. Hence you need to set the stb to one of the working channels e.g.
12438 H 27800-3/4 tp 14
One channel of which is the Foxtel digital help channel FTA
_http://www.lyngsat.com/optus156.html
You would then need to perform a scan to find and store channels it finds.
Your problem may be that if the unit or your van has moved since you lost everything you will need to set up the arc that you unit can see from scratch. Obviously I cannot know how to do that as it is unit specific however a read of the sticky guides below may give you some pointers on what you need to do
http://www.satellites.co.uk/satellit...rised-systems/
The object of the exercise is to make the tracking of the unit you have match the arc of the Clarke curve above your head in Australia beginning with your true
North satellite which for Perth WA would appear to be 116 Koreasat. Therefore the top of your arc should be that satellite. I am sure the instructions will show you how to set all this up is there anyway you can upload them after scanning on to the web site?