Please see http://mdorfman.home.netcom.com/gca-1.jpg,
http://mdorfman.home.netcom.com/gca-2.jpg, and
http://mdorfman.home.netcom.com/gca-3.jpg. These pictures were
taken at Melbourne (Tullamarine) airport, Australia, on March 17.
They are the best I could do from an airplane window at that
distance.
They appear to me to be obsolete World War II-era Ground Control
Approach radars...any other thoughts on what they might be?