35
Cisco Aironet Series 2700/3700 Access Points Deployment Guide
 
  Cisco Aironet Series 3700 Access Point
Figure 48 Radiation Patterns for the AP 1600i @ 2.4 GHz
Figure 49 Radiation Patterns for the AP 1600i @ 5 GHz
Understanding External Antenna Deployments
All Cisco antenna connectors are labeled; “A,” “B,” “C,” and so on. “A” has a higher priority than “B” 
or “C/D” so, if the AP supports say 3 or 4 antennas and you only have 2 antennas, you can use them on 
ports “A” and “B” for a short term until you install the additional antennas.