It works, I got the same results I got with the stock antenna, I was hoping more for the penetration and the transmission benefits that's described, that along with the distance was no different at all, my evo2 RTH at the exact same spot as the stock antennas, video transmission was no different, installation was a 15 min process, very simple on the evo2 anyway. I do like the fact that I now have the options to attach different kinds of antennas (after installing the antenna coax connectors) I can easily attach different types of antennas to test now. As far as $150.00 I'd thought there would have been a significant improvement, not saying I'm not doing or did something wrong but I aimed it right at the drone as best as I could and as large as it is, you should be able to keep it lined up and it's a pretty straight forward "upgrade".