NMEA gps protocol and altitude

When using the legacy gcs protocol, my altitude comes over the telemetry port as 272 meters, but it should be about 27 meters. I have confirmed the nmea stream is correct by reading my gps directly. 

 

any ideas?

 

 

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Replies

  • This seems like a pretty straight forward software problem, can someone shed some light on how to fix it?
  • Could you post a sample NMEA sentence?
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