My karma flight 120 meter high lost connection .. karma auto land to me .. I was panic and cancel the auto land .. lucky controller still can connect to karma drone ... very scary and heart attack.. I have Dji Mavic Air and I don’t have issue of 120 meter high lost connection.. flight same place same location .. karma poor signal ..
I was flying in Hong Kong near Tai Mei Tuk, and could not get a good signal, Karma kept reporting a “compass error”. Calibration would either fail, or succeed, but once I put my karma on the ground, I would get the same error message, and the Karma would not respond to launch commands. By hand launching or launching from the top of my pack I avoided the error, but on one occasion, I did experience a brief GPS loss on take- off, which was a bit scary as it was breezy, and I was standing on a short pier, while the Karma was over water. After a few seconds, GPS was locked and the rest of the flight was uneventful.
Right after I finished, another gentleman showed up with the Mavic Air, and had zero difficulty getting it off the ground.
I didn’t just experience this issue in one location, there were numerous places I seemed to have issues. All were in very remote areas, but on large concrete docks or dams, where I imagine the metal rods used in construction probably contributed to the compass interference. In the same locations, if I found dirt or grass to take off from, I did not have any issues.
I think on a breakdown I saw, the compass was near the landing gear, so that might account for some of the interference.
One day I was near Tai Po pier, and I decided not to fly my drone due to high crowds, several kites in the air, and two drones. I also thought the location was a poor choice due to being located near an industrial area with large satellites and antennas, which I have no idea what they were for. Bottom line, it just looked too risky.
While I was watching the two drones ( one was a parrot Bebop, the other a DJI Spark), the Bebop has a sudden control failure and with engines running, crashed straight into the bay. Fortunately it wasn’t too far away from the pier, and with a rope tied around his waste the pilot was able to dive in the fridged water and retreave his drone. I’m still pretty sure it was a total loss, but maybe he has insurance?
Again, the DJI Spark didn’t appear to have any problems. I talked to the pilot and his drone was fine.
Later, when the crowds died down, I tried to recalibrate my compass for the Karma, and due to interference, I never did get calebration.