My knowledge of radar?
I assume you are talking of the Brisbane ATC thread.
Ok "Team Player", lets play a quiz.
Does an AN/APN-241 have an air / air radar mode (Skin Paint)?
Do any aircraft with an AN/APN-241 radar fly in Brisbane FIR.
Team Player: Perhaps your lack of knowledge about what actually flies around you own country's skies are an indication? I guess you just thought "I don't have one , so no-one has one".
Next you'll be saying I don't understand TCAS because the Cessna you flew once didn't have it!
Gnad: No, I'm advocating you do what you want.