+Klemmer Posted May 7, 2010 Share Posted May 7, 2010 Looks like we will soon have one less WAAS transponder operating (i.e. WAAS "satellite"). It will only effect Northwest Alaska. Details here in the InsideGNSS article: "GEO Failure Puts WAAS Service under Stress" It's worth remembering that WAAS service (and EGNOS in Europe) comes from "tag along" transponders (fancy word, think of it as the radio signal transmitter for WAAS). These L-band transponders exist on some (not all) commercial geostationary ("geosynchronous") communication satellites. So far, no effect on continental US. If you're ever out there in the field and can't get WAAS (it's happened to me), you might be caught in a "switchover" (also discussed in the article). Give it 10 minutes or so, recycle the power on your receiver, and it could take 15+ minutes after that. WAAS is not at all as "dependable" as basic GPS. Quote Link to comment
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