Hi, I am learning about different antennas like for radio and internet wifi bandwiths and I came to the Yagi antenna. From what I understand, the people use this antenna both for receiving and emitting signal. For example, for pentesting (handshakes and all that) and for radio emitting (also using it in the antennas of routers for places where there is no internet cable connection it increases the download as well as upload speed). The strange part I don't understand is why/how emits the signal from the theory behind the antenna. The antenna makes the incoming waves synchronize, adding up the amplitude for the reception. But all this is in a passive way, how people use it for emission? For example in pentest even if you see the AP, you are not able to emit to the same distance with this antenna right?