VK0GB Casey Station Antarctica
According to the Worldwide Antarctic Program (WAP) he will be active regularly around 0930z and 1730z. Check 7.195, 14.315, 18.130, 21.300.
QSL via F5PFP
Here is a write-up by VK0GB from earlier this year
http://www.antarctica.gov.au/living-and-working/stations/casey/this-week-at-casey/2013/this-week-at-casey-8-february-2013/3