the amp its builded in the 7210, its not something else, read the propaganda Dedicated power amplifier and low noise amplifier improve radio performance...

if you have the time to wait, get the 7210, as i posted, plus a low noise amp. very important in a outrageous interference of 2.4 band, everything to expect on a wi-fi link. to set a 5210 Operation...

alphabeta wrote okie., at first i am gonna try with one 7210 then with antenna then, 2 - 7210 at both ends, need to place higher for LOS. thanks you are going the wrong way, its 1-two 7210, CPEs work...

alphabeta wrote Thanks , i am gonna try with 7210 first and then adding extrenal directional antenna. or in worst case scenario another 7210 at the receiver end. thanks for your time., ill post my...

if you get your RMA read solutiion 2 on post 3 here http://forum.tp-link.com/showthread.php?46637-Advice-using-WA830RE-as-access-point&region=china

alphabeta wrote Fresnel Zone is not clear there is a level difference in point A and point B so there are trees and slight mountain might come in the Fresnel Zone . Thanks whay ever i link you to, or...