Channels, Power Levels, and Antenna Gains
This appendix lists the IEEE 802.11a, b, and g channels supported by the world's regulatory domains as well as the maximum power levels and antenna gains allowed per data rate.
The following topics are covered in this appendix:
•Channels
•Maximum Power Levels and Antenna Gains
Channels
IEEE 802.11a
The channel identifiers, channel center frequencies, and regulatory domains of each IEEE 802.11a 20-MHz-wide channel are shown in Table B-1.
Table B-1 Channels for IEEE 802.11a
|
|
|
|
|
|
|
|
34 |
5170 |
— |
— |
X |
X |
— |
36 |
5180 |
X |
X |
— |
X |
X |
38 |
5190 |
— |
— |
X |
X |
— |
40 |
5200 |
X |
X |
— |
X |
X |
42 |
5210 |
— |
— |
X |
X |
— |
44 |
5220 |
X |
X |
— |
X |
X |
46 |
5230 |
— |
— |
X |
X |
— |
48 |
5240 |
X |
X |
— |
X |
X |
52 |
5260 |
X |
X |
— |
X |
X |
56 |
5280 |
X |
X |
— |
X |
X |
60 |
5300 |
X |
X |
— |
X |
X |
64 |
5320 |
X |
X |
— |
X |
X |
100 |
5500 |
— |
X |
— |
— |
X |
104 |
5520 |
— |
X |
— |
— |
X |
108 |
5540 |
— |
X |
— |
— |
X |
112 |
5560 |
— |
X |
— |
— |
X |
116 |
5580 |
— |
X |
— |
— |
X |
120 |
5600 |
— |
X |
— |
— |
X |
124 |
5620 |
— |
X |
— |
— |
X |
128 |
5640 |
— |
X |
— |
— |
X |
132 |
5660 |
— |
X |
— |
— |
X |
136 |
5680 |
— |
X |
— |
— |
X |
140 |
5700 |
— |
X |
— |
— |
X |
149 |
5745 |
X |
— |
— |
— |
X |
153 |
5765 |
X |
— |
— |
— |
X |
157 |
5785 |
X |
— |
— |
— |
X |
161 |
5805 |
X |
— |
— |
— |
X |
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 B-2.
Table B-2 Channels for IEEE 802.11b/g
|
|
|
|
|
|
|
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 |
- |
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.
Maximum Power Levels and Antenna Gains
IEEE 802.11a
An improper combination of power level and antenna gain can result in equivalent isotropic radiated power (EIRP) above the amount allowed per regulatory domain. Table B-3 indicates the maximum EIRP supported for all regulatory domains for each 5 GHz IEEE 802.11a data rate.
Table B-3 Maximum EIRP for IEEE 802.11a
|
Maximum EIRP for PC-Cardbus Card with 0-dBi Antenna Gain and PCI Card with 1-dBi Antenna Gain
|
|
|
6 Mbps |
40 |
16 |
9 Mbps |
40 |
16 |
12 Mbps |
40 |
16 |
18 Mbps |
40 |
16 |
24 Mbps |
40 |
16 |
36 Mbps |
25.1 |
14 |
48 Mbps |
20 |
13 |
54 Mbps |
20 |
13 |
IEEE 802.11b
An improper combination of power level and antenna gain can result in equivalent isotropic radiated power (EIRP) above the amount allowed per regulatory domain. Table B-4 indicates the maximum EIRP supported for all regulatory domains for each 2.4 GHz IEEE 802.11b data rate.
Table B-4 Maximum EIRP for IEEE 802.11b
|
Maximum EIRP for PC-Cardbus Card with 0-dBi Antenna Gain and PCI Card with 1-dBi Antenna Gain
|
|
|
1 Mbps |
100 |
20 |
2 Mbps |
100 |
20 |
5.5 Mbps |
100 |
20 |
11 Mbps |
100 |
20 |
IEEE 802.11g
An improper combination of power level and antenna gain can result in equivalent isotropic radiated power (EIRP) above the amount allowed per regulatory domain. Table B-5 indicates the maximum EIRP supported for all regulatory domains for each 2.4 GHz IEEE 802.11g data rate.
Table B-5 Maximum EIRP for IEEE 802.11g
|
Maximum EIRP for PC-Cardbus Card with 0-dBi Antenna Gain and PCI Card with 1-dBi Antenna Gain
|
|
|
6 Mbps |
50 |
17 |
9 Mbps |
50 |
17 |
12 Mbps |
50 |
17 |
18 Mbps |
50 |
17 |
24 Mbps |
50 |
17 |
36 Mbps |
40 |
16 |
48 Mbps |
31.6 |
15 |
54 Mbps |
20 |
13 |