Hi On Jul 31, 2013, at 6:47 AM, Magnus Danielson <[email protected]> wrote:
> On 27/07/13 13:19, Brian Alsop wrote: >> If you know your LORAN has a 1/4 mile accuracy then you stay 1/2 mile >> away from bad things. >> >> The trouble with GPS is that it is so good, people don't use common >> sense and give obstacles a wide berth. > > The published civilian precision of GPS isn't much better than LORAN-C, but > it gives much better performance now for many reasons, including many birds > in view and SA turn-off. > > You do have hit the point, normally GPS works so darn good for most usage, > that you perceive it to always be there, out of flaws. It's now with GPS > receivers in phones that people start to learn that you can be in > radio-shadow... > > GPS is a good service when it is there, but when it isn't quite there or > gone, you need to have a backup-plan, and know when to execute it. > LORAN-C is a good back-up plan. Except that in practice Loran-C was much less reliable than GPS. Up comes a flag that says "GPS & Loran don't agree". The vast majority of the time it'll be Loran that's wrong. Very quickly a normal person will default right back to the GPS. Bob > > Cheers, > Magnus > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
