The cesium and iridium clocks at National Institute of Standards and Technology through WWV and WWVH broadcasts, provide the time signals to the Global Positioning System satellites which without time signals to the Wide Area Augmentation system from WWV & WWVH are not accurate for navigation purposes. The WWV and WWVH broadcasts also provide the time signals for satellites and space probes.
These signals also provide the time stability for all the Joe Taylor communication modes. The bit about my $30 wrist watch being incredibly accurate is not important in the grand scheme of things. 73 Lee NORRL On Tue, Aug 21, 2018 at 10:05 AM, K2bew <tombew...@gmail.com> wrote: > Sorry don't agree at all. Emergency communications when everything is down > and people need help is not comparable to a transmitter that puts out the > time according to an atomic clock over radio. You can always use a sundial, > and knowing the time to the second is not necessary in an emergency. > Tom > > On Tue, Aug 21, 2018, 9:43 AM Phil Kane <k2...@kanafi.org> wrote: > > > On 8/20/2018 7:16 PM, K2bew wrote: > > > > > With the internet and phones that use data and or GPS satellites to > > > constantly synch time more effectively than radio sygnals it does > > > seem crazy to fund it. > > > > This is the same sort of argument that some folks in the Emergency > > Management community raise - why do we need radios when we have cell > > phones and the internet. That assumes that the internet and the > > cell-phone infrastructure that depends on same will exist when the chips > > are down. > > > > I remember being in the studios of a major AM radio station when the > > corporate auditor told the chief engineer "this could be a very > > profitable operation if we could get rid of this thing called the > > transmitter". (Rest in peace, Howie....) > > > > I would suspect that the incremental cost of running WWV and WWVH - > > which are mostly "set and forget" operations - is of the same order of > > magnitude as the paper towel and toilet paper bill for that agency. > > > > 73 de K2ASP - Phil Kane > > Elecraft K2/100 s/n 5402 > > > > From a Clearing in the Silicon Forest > > Beaverton (Washington County) Oregon > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to ldormis...@gmail.com > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
