The North American Electric Reliability Council is planning to relax the standards for how closely power utilities must hold to 60.00Hz. Here's my absolute favorite quote of all time: Tweaking the power grid's frequency is expensive and takes a lot of effort, said Joe McClelland, head of electric reliability for the Federal Energy Regulatory Commission. "Is anyone using the grid to keep track of time?" McClelland said. "Let's see if anyone complains if we eliminate it." http://hosted.ap.org/dynamic/stories/U/US_SCI_POWER_CLOCKS?SITE=AP&SECTION=HOME&TEMPLATE=DEFAULT I believe the answer to that question is contained here: http://yarchive.net/car/rv/generator_synchronization.html [1] This is gonna be fun, no? Cheers, -- jra [1]Please, let's not start in on the source.[2] [2]No, really: *please*. :-) -- Jay R. Ashworth Baylink jra@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274