Fluke AIRCHECK User Manual page 67

40 MHz 802.11n is not
recommended on 2.4 GHz
Unexpected country from access
point
Table 4. 802.11n Capabilities (shown on the Access Points Details screen)
AP will use 40 MHz channels if
possible
AP is set to use only 20 MHz
channels
Table 3. Notes for Networks and Access Points (continued)
You should not bond channels in the 2.4 GHz band because that band has only three
channels that have no overlap with each other. If you bond two channels, then only
one channel is available for other devices to use.
The country code from the access point does not agree with the country selected in
Tools > Set country in the tester.
The "Set Country" selection may not be available in some countries.
In some situations, the access point will not use 40 MHz channels. Examples:
• The access point has heard other access points or clients that use channels that
have overlap with 40 MHz channels.
• A client that uses the access point has heard such access points or clients and told
the access point not to use 40 MHz channels.
See the 802.11n standard for all the situations where access points will not use
40 MHz channels.
The user has set the access point to use only 20 MHz channels.
Notes for Networks and Access Points
Note
59