To install antenna brackets onto a DJI M200 copter, you must first replace the existing leg mount.
Step 1: Remove leg from copter by lifting clamp and pulling the leg out of the bracket.
Step 2: Remove the three screws attaching the current bracket to the copter
Step 3: Locate the replacement bracket, which includes an antenna mast.
Step 4: Using the same three screws, attach the replacement bracket.
Step 4: Use clamp to reattach copter leg