Got mine on Friday, installed in about an hour or less, easy to install. My box didn't have the little rubber plugs for the holes from the original antennas, but no big deal. Range is definitely really impressive. The plate should be pointing in the general direction of the bird (expected) but I was able to achieve an altitude that I otherwise would have 1 bar on RC and HD in my area, with full bars while holding the controller parallel to the ground. Oh also, instead of removing the ribbon cable from the little board with the USB ports, I unclipped the two side ribbons and unscrewed and removed the board itself, this made the ribbon cable removing MUCH easier than having to remove it using the needle nose angled pliers, just an FYI.
I also achieved a quite better horizontal range in my area (lots of trees and buildings) than I did stock.
I will test horizontal range tomorrow in a suburb where my parents live, but I have no doubts. The controller looks really cool with this mod too [emoji16]
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Yeah I have two P3 Pro birds, not sure if I will do the other controller yet, the little aluminum home-made boosters work quite well!