Minor clarification, Loran-A was used from WW-2 until it was turned off in the
1980's I believe. The current system, Loran-C was in commercial use starting in
the late 70's. When Loran-C was used for returning to a previously stored
waypoint, it's accuracy was almost as good as current GPS and better than the
early "dithered" commercial GPS service.
Howie
AB2S
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