JKARC
Oh.
You’ve found the final resting place of the JKARC – the John Knox Amateur Radio Club – formerly VK3GUS, active in Melbourne during the 1990s and early naughties.
A few of us are still around. Try calling on 439.600 MHz if you’re keen. You might need a 91.5 Hz subtone and a negative offset these days. Maybe even DSTAR.
Good luck.