Cisco Aironet 1850 Series Deployment Manual page 41

The software reports channel is 36 (this is where the channel bonding starts). On a spectrum analyzer, you
Note
can see that the actual channels in use are 36, 40, 44, and 48.
Figure 34: Example of a Bonded 80 MHz Channel
For clients to link at 80 MHz, you have to set the channel width to 80 MHz on the AP.
Note
Figure 35: Setting an AP 1850 to an 80 MHz Channel from the Controller.
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