Limited 5 Ghz Wifi Range ?? topic

Hi,

I've just bought a drone with a 5,8 Ghz Wifi camera in order to do Back control video.
The problem is that my oppo Find 7 can't detect this Wifi signal. Why?
It seem's to be an Android limitation because it appears that Iphones do not have any problems.
Do you think it is possible to bypass this with a custom Kernel?

Regards

Steph.