Bondi was the landing point for Compac and at the end of our Cable Course in 1972, Percy Day took us on a tour of the cable path through Centennial Park and the streets of Bondi. Percy toured the Compac Cable path every Monday to make sure that there was no construction work that would put the security of the cable at risk.
We visited the cable entry room and noted that there was more than just the Compac Cable in the room. In fact there were many old telegraph cables terminated in the room and one of the universities was graphing the voltage / current generated on the cables by the earths changing magnetic field. Percy had to check the paper recorders and mark the dates.