Frank, The first GPS Week 1024 epoch rollover will occur at about midnight of 21-22 August. The rollover occurs every 1024 weeks. Date (and possibly time) may be incorrect for those GPS receivers that do not incorporate a workaround to deduce the new epoch. Before reading the pages below I had thought that navigation was unaffected. I think that recently manufactured receivers are more likely to incorporate a workaround and to be correct during and after this rollover.
See <<http://www.2k-times.com/y2k-a118.htm>http://www.2k-times.com/y2k-a118.htm> More at <<http://www.laafb.af.mil/SMC/CZ/homepage/y2000/>http://www.laafb.af.mil/SMC /CZ/homepage/y2000/> including a list of (primarily military) receivers that have passed compliance tests for this and the Y2K problem. If this rollover presents a potential problem to you then contact your GPS receiver manufacturer (or their Web site) regarding compliance of your specific model and version. I think that a more complete Web search will locate much more on this problem. Gordon At 11:11 AM 8/16/99 , Frank Evans wrote: >My wife half-heard a piece on the radio this morning saying that GPS >instruments would fail next week unless they had previously been >modified to take account of some transmission changes. They would >simply be unable to find a position. Sound a bit like the millennium >bug. Does anyone have any information about this, please? Users were >advised to contact their suppliers. I'm feeling lost already so can you >help? Gordon Uber [EMAIL PROTECTED] Reynen & Uber Web Design http://www.ubr.com/rey&ubr/ Webmaster: Clocks and Time http://www.ubr.com/clocks/
