Wireless Access Point
336 Configuring the Wireless AP
• Non-Radar: give preference to channels that are not required to use
dynamic frequency selection (DFS) to avoid communicating in the
same frequency range as some radar (also see Step 8 on page 320).
• Negotiate: negotiate air-time with other APs before performing a full
scan.
Channels Required to Use DFS Radar Avoidance in USA
36+40 Non-radar 116 DFS required
44+48 Non-radar 132+136 DFS required
52+56 DFS required 140+144 DFS required
60+64 DFS required 149+153 Non-radar
100+104 DFS required 157+161 Non-radar
108+112 DFS required 165 Non-radar
Channels Required to Use DFS Radar Avoidance in
Europe
36+40 Non-radar 116+120* DFS required
44+48 Non-radar 124*+128* DFS required
52+56 DFS required 132+136 DFS required
60+64 DFS required 140+144 DFS required
100+104 DFS required 149+153 Non-radar
108+112 DFS required 157+161 Non-radar
* Channels 120, 124, 128 use a
10 minute Channel Availability Check
(CAC) time in Europe
165 Non-radar
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