Ok, ok, you win!!! Install APs on metal for all I care!!! via @gugamastroianni Bad AP placement @gruairportsp .. Since it's HD environment, patch antennas should be used. @BadAtWiFi @HeyEddie pic.twitter.com/z3368mI38A— Gustavo Mastroianni (@gugamastroianni) June 13, 2015 APs designed for HORIZONTAL mounting installed VERTICALLY. This is why it's important to understand antenna patterns.APs mounted DIRECTLY on what looks like walls with METAL on them. People, WiFi and METAL DON'T MIX.