Cheerson CX 20 Drone Altitude vs Elevation Flight Test
When flying the CX-20 GPS quadcopter, it’s important to know the difference between altitude and elevation. You can buy the CX-20 Auto Pathfinder here (Open Source version) http://amzn.to/2aGxy2z and spare parts, batteries, motors, propellers, etc… here http://shrsl.com/?~cako
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