I use two of these antennas spaced 30 cm and connected to a wireless transmitter to fly a drone quadricopter DJI Phantom 2 Vision (also sold by Amazon) equipped with a HD camera with wireless video transmitter 2.4Ghz. My DJI radio is equipped with a receiver for retransmitter return the video signal in real time on the iPhone WiFi. Without any modification of the transmitter and two antennas panel fitted to the drone, I can keep the video contact and receive flight data transmitted in a wireless remote that can grow in the open field and without interferences, 1400 meters! This is 3 times more than what the manufacturer promises the quadricopter with the original antenna of the retransmitter (much smaller it is true), so I disconnected by installing two small pigtail RP-SMA cables that allow me to Connect these antennas instead of original ones installed in the retransmitter.
So I first confirms that Wi-Fi connections in 2.4 GHz can work very well (low resolution and 15 frames / second anyway) up to over 1,000 meters apart and that this antenna has a very good level performance relative to its price.
Obviously, we must move in the right direction, in general, moreover, a little higher than the target ... and have no obstacles in between (not even a tree ...).
Overall, a very good price / quality ratio, if you know how to install and adjust correctly. Notice to radiomodélistes ...
