Amazing product, really makes my signal better by reducing nearby interferences and thus, increasing my radio range. Love it.

Haven't been able to tell yet how much improvement it has made but it looks cool.

Fits well, seems to add range. I use it all the time. Easy to put on, and take off.

It works good. If you use in the upright position there is a fine line between having it at the right angle and being in the way of having the right angle with the phone or tablet but is doable. You can also point the antennas downward and install this backwards which works well too. Just remember though, "without" these your antenna has wider view and not extremely directional especially up close. But when you add these type boosters you need to be precise on pointing your antenna face to the drone and yes it does work. It make the antenna have a more narrow but concentrated view. This means must be aligned up/down just as much as left/right. If not you can find yourself losing signal at a shorter range than without which is likely why some people claim they lost range. It works great, just know how to point it. If you are not flying somewhat far there is not benefit that I can tell. I fly mostly without but if going distances or in a high interference area saturated with wifi etc, I will install it and use because it increases potential range and has less interference

The signal on my Phantom 4 Pro was breaking up when I was flying it long distance's and thought I would try this ranger booster since it was inexpensive. It has made a big difference, was able to fly it 4.3 miles without any interference and that was under ideal conditions.