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.
Cheers,
Magnus
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