I am not in Australia, but at a guess the most probable stations for you to catch would the be Asian and far East stations.
M95 (Morse) and V26 (Chinese voice) are on multiple times a day. Typically they operate on one of two "sets" of frequencies. First set: 4243 // 7345 // 9054 kHz. Second set: 4283 // 7553 // 9153 kHz. M95 is CW and V26 is typically in USB mode.
The exact start time for M95 and V26 vary quite a bit, but typically they are on one set or another about each hour from 0900 to 1400 UTC. Some transmissions are very long, I have seen them run over an hour each. Some are very short, I have seen 2 minute transmissions. Since it is so unpredictable I would say just check all 6 freqs multiple times between 0900 and 1400 UTC, and select freq / time to concentrate on based on your anticipated propagation for that set. Fairly often lately V26 has been erring 1 kHz low in frequency. I suspect this is because they use an LSB offset for M95 and sometimes forget to reset to an USB offset. In fact, they sometimes forget to select USB totally, and some transmissions end up in LSB because of this .
South Korean V24 is on almost daily. It transmits on a predictable schedule between 1200 and 1630 UTC, on the freqs 4900, 5115, 6215, and 6310 kHz, all in AM mode. I publish a schedule of past transmissions a couple of times a year. The most recent can be found here:
http://token_radio.home.mchsi.com/V24_M94_latest_sched.JPG The “Day” in the left most column is day of the month, calender day, there is no relationship to day of the week for this station. V24’s Morse sister station M94 transmits 4 times a month. V24 starts with music, so if you tune to a freq and hear music give it a couple of minutes, see if it changes to numbers.
Spanish language V07 I suspect is sent from far eastern Russia, but I have little proof of that. It might be a good candidate for you as other folks in Australia have had luck receiving it, depending on time of the year. It transmits on different frequencies each month, and shifts its start times over the year. This station only transmits one day each week, Sunday morning UTC. If there is a message to be sent it sends 3 times, first at XX00, second at XX20, and third at XX40 (XX is hours in UTC). If no message (called a “null” message) it will only send in the 00 and 20 time slots. I also publish a schedule of this station, it can be found here:
http://token_radio.home.mchsi.com/V07_latest_sched.JPGV13 is a Chinese language station from Taiwan, called “New Star Broadcasting”. It is on multiple times a day, but I do not follow this one so I do not have a solid schedule for it. It’s transmissions are typically about 30 minutes long each. I have caught it on multiple time slots from 0900 to 1500 UTC. It changes freqs through the year, but I think its currently active freqs are 7654, 7688, and 13750 kHz. Operating mode is USB plus carrier.
There is a Russian language S06 that is sent at 0400 UTC every week day, Monday to Friday, on 15721 kHz. It would be a good candidate for you except that Radio Australia has an outlet at the same time on 15720 kHz, so the QRM will likely be too strong for you to hear the S06 station.
There are others to be found in the region also, but the above are generally what I think of as the “easy” ones.
T!