Here are two examples of how reliable HF Radio is. The first video is of a subscriber talking to Alice Springs Base from Coongie Lakes near Innamincka. Distance to Alice Springs Base as the radio goes is about 750 kilometres.

Second video is a traveller talking to Charleville Base in Queensland from Old Ooldea Railway Station on the Trans Australia Line near Cook in South Australia. Travelling distance by radio waves in this case was about 1,620 kilometres.

Our subscribers do hops like this by radio every day of the year. Why would you use anything else to communicate reliably and ensure your safety when you’re on the Wallaby?