On 2014-03-13, Hal Murray <hal-use...@ip-64-139-1-69.sjc.megapath.net> wrote: > In article <lfqeb1$m6$5...@dont-email.me>, > William Unruh <un...@invalid.ca> writes: > >>CDMA also needs an antenna with cell tower view. What's the difference? > > 1/r-squared. > > The GPS satellites are way up in the air. A cell tower is a lot closer. > You can get a signal from a cell tower into a lot of places where GPS > doesn't work.
There are loads of places here where the cell phone signal disappears. The gps signal is there everywhere outside. Agreed that in favourable circumstances, the cell signal may penetrate into the building much deeper, but it can also be non-existant even outdoors. > _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
