By the way, if you are looking for QSL information for any of the above callsigns, the best way is via VK1SV, direct or via the buro.
I am currently involved in LF experiments in the newly released to amateurs 136 kHz band. I was also involved in the in the 500 kHz (600 m) band propagation study experiment, using the WIA AX2VKY callsign. This license expired on 02/06/2011. The outcome of the last WRC is a new band on 472 kHz.