Just took my maiden voyage with my Q500 4K. Calibrated the compass. Made sure GPS was ON. Sunny day with very thin clouds. ST10 indicated 14 Satellites and 19 for the Q500. The main LED continued to flash Purple(Angle Mode). GPS coordinates were visible. GPS Mode indicated ready. It seemed to be telling me I had no GPS signal. Took off in a bit of wind and was not drifting. Any ideas. I'm not sure if I had GPS lock or not . Purple LED should have remained on, not flashing.