the high power government coastal station at sydney had originally been specified in the contract with australasian wireless co., ltd. to be at a coastal location. this was with a view to taking full advantage of superior radiofrequency propagation across sea water. but defence had not been properly consulted and when they became fully aware of the circumstances, they insisted on an inland location to provide immunity from enemy shelling. eventually the pennant hills location was selected and acquired, but in order to be confident of meeting contractual performance requirements, australasian wireless insisted that the transmission facility be of greater power. a substantial increase in contracted price resulted.