I have a home base UHF, which runs on a 240v system, through a 7 metre station master aerial, again power boosted. This allows the monitoring and scanning of all channels, so if someone on the Tanami or CSR does get in trouble, we frequently pick up their signal.
Often my son simpl does "welfare checks" when he hears people travelling and communicating on UHF, from "Mulan Base 1", making sure people are okay. On good days we can talk with the Granites Mine.
Regards
Tjupurula
WHoopa, off topic, my apologies.