In some implementations, the wireless access point 116, using association module 242, checks the stated capability fields of all the associated wireless client devices to determine whether the wireless client devices identify support for the second, e.g. 5 GHz frequency band. This may be performed after a predetermined amount of elapsed time since the wireless access point 116 initiated operation (e.g., about 30 seconds). In this example, the elapsed time requirement ensures that all wireless client devices that request to associate with the wireless access point 116 have had time to locate the wireless access point 116 and do so. In further examples, the wireless access point 116 may determine whether wireless client devices support the second, e.g. 5 GHz, frequency band by referencing stored information about devices which previously associated to the wireless access point 116. In other implementations, the wireless access point 116 may obtain signal measurements with frequency band switching by trial and error to determine the capabilities if the wireless client devices choose to not send the capability information to the wireless access point 116. In some implementations, the wireless access point 116, using association module 242, collects received RSSI measurements from the wireless client devices to determine whether any of the wireless client devices are transmitting from a far distance relative to the wireless access point 116 or have weak signal strength. The received RSSI measurements may be based on signals received from the wireless client devices in some implementations, or may be based on the wireless client devices reporting the RSSI of signals it sees from the wireless access point 116 in other implementations.