DJI Mavic Pro Controller/ Antenna Range Booster ~ Windsurfer style. This simple concept will significantly increase your controllers range without any modifications to your controller.
It works by focusing the signal that would normally be transmitted 360 degrees & lost behind you, back in the direction of your Mavic, strengthening the signal sent & therefore increasing your range. It works Great! Easy on/off installation on the controller & fits easily in a case.