I don't get this. You are procedurally separated by Launy Tower, you have to use procedural radio phraseology, but they have a radar.
Actually,
they don't have a radar, Melbourne Center gets the feed. An Air Situation Display (i.e radar screen) would have cost around $20,000, so Launy Tower didn't get one. Makes good headlines that there is a radar head there though, doesn't it.