Strong interference detected

[speedbird1984]

Did a flight yesterday and kept getting this message. I also lost the signal .1 of a mile away from home. Remote was on two lights (if that makes a difference!?) I wasn't near any elec cables. I'd also put my phone in airplane mode.
Anyone have any ideas as to why I kept getting the error message?
Thanks.

 

[GrammatonxXXxCleric]

What model Phantom? P3A/P/S ? Are you keeping the remote's antennas parallel and at 90 degrees and facing the drone?

 

[speedbird1984]

Standard.
I keep the antenna at 45 degrees. Yesterday I did fly off a bit to one side. Those have never been issues before though.

 

[GrammatonxXXxCleric]

Proper use: 90 degrees upright, parallel to each other and facing drone.