Zero-wait DFS is a mechanism to eliminate the wait associated with being booted from one DFS channel and finding another to connect with. In security access points, an extra hardware scanning radio interface can scan DFS channels and create a radar-free DFS channel list. When radar is detected on the current DFS channel, the access point can switch immediately to another DFS channel from the list without having to undergo the channel availability check (CAC) wait time. Because a list of available channels has already been compiled, the switch can happen instantly.