Mainframe:
I'll take your word for the 'Tier....whatevers', on the basis of your apparently greater knowledge of the topic.
My 'Johnny on the Spot' reference is from personal experience, either in-flight (XYZ, we have been advised of an ELT signal in your vicinity, are you able to investigate etc) or from being registered with AUSAR as a provider (midnight phone call "Giday mayte, can ya go an 'av a look at all the hairyplanes on the apron an' see if anys got their beacons transmitting; if not then can ya crank up yer 'plane and see if ya can locate one that the satelite reckons is in the area.....)
Give me a PM if you know of any planned formal training for SAR ops in Qld; I might drag the beast out for some work.
CYA