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Originally Posted by godrick
The 1030 version of the script reports "GPS Locked", but then gets into a "No GPS Fix" loop, even though Netstumbler reports a GPS position at the bottom of the screen, and the GPS Stat (SDV modded).zip version from the other thread works fine.
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One of the bullet items for this, introduced 2004-09-18, is:
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Originally Posted by goldfndr
If NetStumbler doesn't detect that your GPS receiver doesn't have a fix (the Lat/Lon stay constant, e.g. DigiTraveler and some Deluo), this script will notify you.
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The easiest way to check this is to note the lat/lon in the status bar, move away (100ft or 33m ought to be enough), and see if the lat/lon ever change. If there's a change then it's overly sensitive, and you should increase the appropriate variable (I don't remember which one). My DigiTraveler generally wanders a little bit over time, but if yours has an actual lock without ever wandering (also can be tested in other apps, e.g. VisualGPS), more power to you.
It's a good thing to know, because if your GPS isn't accurate you'll screw up your stats/maps (and anyone to whom you send your logs), and it might be preferable to turn off detection/logging when this occurs. What receiver do you have? I'm guessing it gives non-zero coordinates before it actually has a fix, and it seems that NetStumbler might only being paying attention to zero coordinates or dead silence for evidence of a lack of fix.