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Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide for Windows Vista
OL-16534-01
Appendix E Channels, Power Levels, and Antenna Gains
Channels
Note All channel sets are restricted to indoor usage except America (-A), which allows for indoor and outdoor
use on channels 52 through 161 in the United States.
Note The Japan (-J) channels apply only to AIR-CB21AG-J-K9 and AIR-PI21AG-J-K9 client adapters, and
the Japan (-P) channels apply only to AIR-CB21AG-P-K9 and AIR-PI21AG-P-K9 client adapters.
IEEE 802.11b/g
The channel identifiers, channel center frequencies, and regulatory domains of each IEEE 802.11b/g
22-MHz-wide channel are shown in
Table E-2.
Note Mexico is included in the Rest of World regulatory domain; however, channels 1 through 8 are for indoor
use only while channels 9 through 11 can be used indoors and outdoors. Users are responsible for
ensuring that the channel set configuration is in compliance with the regulatory standards of Mexico.
Note In Japan, channel 14 is not supported for 802.11g mode.
Table E-2 Channels for IEEE 802.11b/g
Channel
Identifier
Frequency
(in MHz)
Regulatory Domains
America (-A) EMEA (-E) Japan (-J)
Rest of World
(-W)
1 2412 X X X X
2 2417 X X X X
3 2422 X X X X
4 2427 X X X X
5 2432 X X X X
6 2437 X X X X
7 2442 X X X X
8 2447 X X X X
9 2452 X X X X
10 2457 X X X X
11 2462 X X X X
12 2467 – X X X
13 2472 – X X X
14 2484 – – X –