Hi all. I have had these for a while and always use them. Been a success. I always fly with OTG. I have noticed that the WiFi signal gets quite poor (one bar) even if I am out at as little as 900ft. This makes me not want to push the craft much further out. Is this normal and will I lose contact if I have no WiFi bars up. I fly with an IPad 6 and have Airplane mode set. Thoughts most gratefully received.