16 May
2006
16 May
'06
2 p.m.
--- Marshall Eubanks <tme@multicasttech.com> wrote:
I seriously doubt this would work to better than the regional area.
My zip code (20124) region is about 5 km across, which would be 15 microseconds in vacuum, and maybe at most 50 micro seconds in glass. So, you would need accuracies at the 10's of microsecond level to specify zip codes.
don't forget, cable paths are not direct, and each bend in the cable increases the distance that the light must travel within the fiber. optical repeaters, optical switches and other equipment can add distance, (thus time) to the signal. Please see http://www.fiber-optics.info/fiber-history.htm