So that must mean that Hugh's ADSB GPS transmitted position is not received by AsA at Ballina. It is simply the Mode S transponder that is being received and displayed on the controllors screen. The ADSB was a waste of money in this location.
CASA has written me a letter stating that from December this year I will no longer be able to fly my CJ3 in the J curve above FL 290 without ADSB. This is despite the fact that my aircraft is fitted with a mode S transponder and in most cases that's the only signal they will be receiving.
Sounds like a dishonest con to me!
Presumably the only reason they have not installed ADSB transceivers under the J curve is to save money and increase profits. But why then force aircraft to be ADSB equipped when they won't be receiving and processing the ADSB GPS position information ?