don't send bogus latitudes

src/gps/UBloxGPS.cpp

@@ -117,7 +117,9 @@ The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of s
         altitude = ublox.getAltitude() / 1000; // in mm convert to meters
         DEBUG_MSG("new gps pos lat=%f, lon=%f, alt=%d\n", latitude * 1e-7, longitude * 1e-7, altitude);
 
-        hasValidLocation = (latitude != 0) && (longitude != 0); // bogus lat lon is reported as 0 or 0 (can be bogus just for one)
+        // bogus lat lon is reported as 0 or 0 (can be bogus just for one)
+        // Also: apparently when the GPS is initially reporting lock it can output a bogus latitude > 90 deg!
+        hasValidLocation = (latitude != 0) && (longitude != 0) && (latitude <= 900000000 && latitude >= -900000000);
         if (hasValidLocation) {
             wantNewLocation = false;
             notifyObservers(NULL);