User Manual

Wireless Nd1 Router User Guide
Control and Extension Channels
Control and the secondary extension channels are only applicable if your access point is
operating at 40 MHz bandwidth and the 802.11n mode is configured as Automatic.
For US channels:
Control Channel Sideband Extension Channel
1 - 7 Lower Channel number + 4
5 - 11 Upper Channel number - 4
For European channels:
Control Channel Sideband Extension Channel
1 - 9 Lower Channel number + 4
5 - 13 Upper Channel number - 4
Example: If your control channel is set to 1, the extension channel will be
transmitted on channel 5. The total bandwidth of the signals on channel 1 and 5
equals 40 MHz.
Example: If your control channel is set to 11, the extension channel will be
transmitted on channel 6. The total bandwidth of the signals on channel 11 and
7 equals 40 MHz.
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