I really enjoyed the Sydney Safety Forum too last Saturday.
In regards to the YSBK lane of entry, I too was taught to give a radio call at Parramatta
(North Bound) and Brooklyn Bridge
(South Bound) .
It is a bit of a hard call which way is right and which way is wrong. There are some days when the airways are so crowed, by the time you get a chance to give your call, you are either already at Brooklyn Bridge or have past it. The same travelling North Bound from Parramatta.
It all comes down to developing your
sight and see skills as number one , just in case someone has no radio, or they are too scared to use it, or the local area frequency is so congested that you cannot get a break to transmit your position. You have to realise sometimes the other aircraft may not of been able to transmit there position due to an over crowed frequency too. This can happen because airservices
(Syd Radar) has one person looking after both the Northern and Southern area frequencies and not only that you hear all the transmissions going on in both areas.