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#1
posted to rec.boats.cruising
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RDF (radio direction finding) ... do you ?
The technique is still valuable. I.E. If you frequent an area plagued
by occasional fog, RDF observations recorded during periods of good visibility would be useable when conditions were bad, even if GPS and actual charts disagree. This presupposes that you can survive the trip on a good day using traditional methods. Preserving options is a viable method. Relying on a single method that can not be absolutely guaranteed in a case of dead batteries or gps instrument is an invitation the fates will not ignore indefinitely. Terry K |
#2
posted to rec.boats.cruising
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RDF (radio direction finding) ... do you ?
The technique is still valuable. I.E. If you frequent an area plagued
by occasional fog, RDF observations recorded during periods of good visibility would be useable when conditions were bad, even if GPS and actual charts disagree. Right on. RDF is most useful if the beacon is an actual marine navaid on structures of interest, like an entrance jetty, which you can "home in" on. Then, when fogbound and "close-in" , i.e., a few hundred yards, it can tell you which side of the item you're passing on, without benefit of a chart. It's less reliable when you're far offshore or the signal emitter is not near shore (like a commercial radio station antenna inland), because of the bending of the apparent direction of the antenna by topography, etc. |
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