I am designing a PCB and I will use a 2 dBi antenna like this image. But the point where my radio should connect has a 9 dBi antenna like this picture here.
I know everything will work perfectly, but the question is: this antenna 9 dBi is very expensive and it really will make a difference in the whole set? I say this because I think that to take advantage of all pontencial this antenna I would need to have two identical antennas.
I think my antenna 2dBi (placed on the radio) is that will dictate the maximum distance of communication and not 9dBi antenna. I am very wrong? Would not the same just use two equal 2dBi antennas?