This is a great feature of the Cisco WLC >8.2 software and 2800/3800 APs. For selected APs, the second radio can be used dynamically and have its purpose allocated by the WLC. I tested this recently during a setup of a small controller and 6 APs, because they all within 1 metre of each other. One had decided a single 2.4Ghz radio, one in monitor mode and the remaining 4 variable radios all with dual 5GHz. While this isn’t a great deployment being so close, it was interesting to see!
>show advanced fra