VMC Charleville, Queensland and VMW in Wiluna, Western Australia are regulars here, the following are their SSB transmission frequencies:
VMC Charleville, Queensland:
2.201MHz, 4.426MHz, 6.507MHz, 8.176MHz, 12.365MHz & 16.546MHz all in USB mode.
VMW Wiluna, Western Australia:
4.149MHz, 6.230MHz, 8.113MHz, 12.632MHz & 16.258MHz all in USB mode.
Good luck, think the transmitter power is between 2 and 5Kw, not sure though.