Amazon, the online retail giant, is looking for its first warehouse in Australia, with suggestions one site of interest is the Goodman Group's $50 million industrial estate at Oakdale, in Sydney's west. The mega retail "disruptor" already has two traditional-style data centres in what it calls a region in Sydney's west for its Amazon Web Service, and agents say given the usually large warehouses required by Amazon, the new Oakdale site would be the best available.
Oh it's on... a price war between JB and Amazon AUS would be more than welcome.
3 alternative UHF transmission sites available from that area with good coverage according to "myswitch", would be worth a look with correct address put in and or a signal survey with the correct antenna if the VHF is a no go with the existing set up as MLXXX suggests.
Yes from the OP's particular address I see there is a significant slope upwards of the local terrain, in the direction of Artarmon (approx 14km to the East). An even higher mast might be needed; or trying for pick up from an entirely different direction, specifically from the North-West, Kurrajong Heights (UHF, approx 47km).