Cisco Aironet Series 1700/2700/3700 Access Point Deployment Guide
Cisco Aironet Series 3700 Access Point
Figure 49
6 dBi Patch Antenna – While Not Critical, Ideally Ports “A” and “B” are Used on the ends.
Figure 50
AP 1600 Note port “A” is Spaced Furthest from “B” and “C” for Best Diversity