Included in the investment is $277 million to upgrade the training ranges flown over by Growler pilots, as well as upgraded sensor and jamming capabilities.
The deal with CEA Technologies will see advanced radar capabilities installed at RAAF Base Amberley and the Delamere Air Training Area.
It will form part of a larger $2 billion program that will also see the aircraft itself upgraded with sensor and jammer upgrades and new longer-range missiles.
The EA-18G Growler is an electronic attack aircraft, designed to jam or destroy military electronic systems — including radars and communications — to curtail enemy operations.
Australia has a fleet of 11 and is the only country outside the US to operate the aircraft, which is effectively a variant of the Super Hornet.