Creampuff your scorn is getting really tedious.
I am talking about an aircraft that obviously has a radio as it also operates at Jandakot. A pilot who chose either a) to keep it turned off or b) to depart from a runway with another aircraft on final in the opposite direction.
You're the clever ne so you can post the reference that if you have a radio you must use it.
My point was that for those who feel that total radio silence is preferable to calls at an aerodrome that my not be certified or registered but nevertheless it's own discrete CTAF there could be occasions where you can cause another aircraft who has right of way to have to make a rapid change of course.
Scorn away as you are going on to my ignore list.