how do i test or check my antenna at RC and or at AC?

[Phantom fisher]

i know i have a connection problem but i dont know how to isolate weather it is at the controller or at the ac?

any help would be appreciated, i havent made any mods it was working fine now it connects on and off even whilst in the same room sometimes it wont connect???

 

[Mark The Droner]

You could get yourself a EMF meter.

Or better yet you could get an inline RF meter.

If transmission is okay you must have an antenna or receiver problem.