Hawking HW12ACM User Manual page 42

Channel
Channel Bandwidth
BSS BasicRate Set
37
Select a wireless channel from 1 – 11.
Set the channel bandwidth: 20MHz (lower performance but
less interference), 40MHz (higher performance but
potentially higher interference) or Auto (automatically select
based on interference level).
Set a Basic Service Set (BSS) rate: this is a series of rates to
control communication frames for wireless clients.