Showing my age: In N.A. in the "old days" they ensured everybody's clocks were co-ordinated and arranged via telex the precise time of slightly shifting the HZ. They worried about long term consistancy and had a 3'rd party track and report across North America. No doubt methods have progressed :) On 8 June 2010 15:50, Charles Craft wrote: > I had one question that turned into two after Googling around. :-) > > 1. Saw a blurb today about a power cable between countries and got me > thinking - > how do they synchronize all the power stations on a grid? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist