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GPS
Folks messing around on boats anywhere from the northern Bahamas to Cape Hatteras need to know their GPS receivers may or may not sometimes go crazy over the next month. This according to a rather cryptic FAA advisory warning pilots of military GPS tests being conducted between January 20 and February 22.
Ever since they start selling 406 MHz EPIRBs with built-in GPS units (the so-called G-PIRB) just a few years ago I've been thinking search-and-rescue (SAR) technology is just about as nifty as can be. Turns out I was wrong. NASA just announced this week it is developing and testing a new technology, called the Distress...
Quiz any curmudgeon these days on the subject of proper wayfinding and you’ll soon find yourself reefed down in a gale of conventional wisdom about the importance of paper charts, compass bearings, dead reckoning, sextants, and the like. But what curmudgeons tend to forget, as they rail on about how modern nav tools are corrupting...

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