Why does the p3 controller have two ANTs?

[lynsomeon]

I'd like to hook up a signal booster on the controller but I won't lie, I'm not even sure what the purpose of the dual ANTs are.

Can anyone elaborate?

 

[BuckRogers]

One for video, one for control

 

[lynsomeon]

Both ANTs are 2.4ghz, no?

 

[msinger]

If needed, you can find the specs here:
http://www.dji.com/product/phantom-3/spec

 

[Chuck Young]

I am going to have to guess that DJI is using MIMO multipath propagation scheme to get a more consistent signal or beamforming. But who knows.

https://en.wikipedia.org/wiki/MIMO

If you are interested in beamforming here is a little article on it

http://www.spectrumsignal.com/publications/beamform_primer.pdf

 

[BenDronePilot]

One for video, one for control

No, the antennas are MIMO working together doubling the speed of the 2.4ghz signal which handles both control and video. If he wants to use amplification he needs to do both antennas for the full benefit.

 

[GadgetGuy]

No, the antennas are MIMO working together doubling the speed of the 2.4ghz signal which handles both control and video. If he wants to use amplification he needs to do both antennas for the full benefit.

"At one time, in wireless the term “MIMO” referred to the use of multiple antennas at the transmitter and the receiver. In modern usage, “MIMO” specifically refers to a practical technique for sending and receiving more than one data signal simultaneously over the same radio channel by exploiting multipath propagation"
One TX antenna is dedicated to control (send and receive) and the other antenna is dedicated to video (receive only). Both benefit from amplification.