Table Of Contents

Channels and Antenna Settings

Channels

IEEE 802.11b (2.4 GHz Band)

IEEE 802.11a (5-GHz Band)

Maximum Power Levels and Antenna Gains

IEEE 802.11b (2.4 GHz Band)

IEEE 802.11a (5-GHz Band)

Channels and Antenna Settings

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This appendix lists the IEEE 802.11a (5-GHz) and IEEE 802.11b (2.4-GHz) channels, maximum power levels, and antenna gains supported by the world's regulatory domains.

The following topics are covered in this appendix:

•Channels

•Maximum Power Levels and Antenna Gains

Channels

IEEE 802.11b (2.4 GHz Band)

The channel identifiers, channel center frequencies, and regulatory domains of each 22-MHz-wide channel are shown in Table D-1.

Table D-1 Channels for IEEE 802.11b

Channel Identifier	Center Frequency	Regulatory Domains
		Americas (-A)	EMEA (-E)	Japan (-J)	Israel (-I)	China (-C)
1	2412 MHz	X	X	X	-	X
2	2417 MHz	X	X	X	-	X
3	2422 MHz	X	X	X	X	X
4	2427 MHz	X	X	X	X	X
5	2432 MHz	X	X	X	X	X
6	2437 MHz	X	X	X	X	X
7	2442 MHz	X	X	X	X	X
8	2447 MHz	X	X	X	X	X
9	2452 MHz	X	X	X	X	X
10	2457 MHz	X	X	X	-	X
11	2462 MHz	X	X	X	-	X
12	2467 MHz	-	X	X	-	-
13	2472 MHz	-	X	X	-	-
14	2484 MHz	-	-	X	-	-

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Note Mexico is included in the Americas (-A) regulatory domain; however, channels 1 through 8 are for indoor use only while channels 9 through 13 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.

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IEEE 802.11a (5-GHz Band)

The channel identifiers, channel center frequencies, and regulatory domains of each 20-MHz-wide channel are shown in Table D-2.

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Table D-2 Channels for IEEE 802.11a

Channel Identifier	Center Frequency (MHz)	Regulatory Domains
		Americas (-A)	Japan (-J)	Singapore (-S)	Taiwan (-T)
34	5170	-	X	-	-
36	5180	X	-	X	-
38	5190	-	X	-	-
40	5200	X	-	X	-
42	5210	-	X	-	-
44	5220	X	-	X	-
46	5230	-	X	-	-
48	5240	X	-	X	-
52	5260	X	-	-	X
56	5280	X	-	-	X
60	5300	X	-	-	X
64	5320	X	-	-	X

All channel sets are restricted to indoor usage, except the Americas (-A) allows for indoor and outdoor use on channels 52-64.

Maximum Power Levels and Antenna Gains

IEEE 802.11b (2.4 GHz Band)

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 D-3 indicates the maximum power levels and antenna gains allowed for each regulatory domain.

Table D-3 Maximum Power Levels Per Antenna Gain for IEEE 801.11b 

Regulatory Domain	Antenna Gain (dBi)	Maximum Power Level (mW)
Americas (-A) (4 watts EIRP maximum)	0	100
	2.2	100
	5.2	100
	6	100
	8.5	100
	12	100
	13.5	100
	21	20
EMEA (-E) (100 mW EIRP maximum)	0	100
	2.2	50
	5.2	30
	6	30
	8.5	5
	12	5
	13.5	5
	21	1
Japan (-J) (10 mW/MHz EIRP maximum)	0	50
	2.2	30
	5.2	30
	6	30
	8.5	n/a
	12	n/a
	13.5	5
	21	n/a
Israel (-I) (100 mW EIRP maximum)	0	100
	2.2	50
	5.2	30
	6	30
	8.5	5
	12	5
	13.5	5
	21	1

IEEE 802.11a (5-GHz Band)

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 D-4 indicates the maximum power levels allowed with the Cisco integrated antenna for each regulatory domain.

Table D-4

Regulatory Domain	Maximum Power Level (mW) with 6-dBi Antenna Gain
Americas (-A) (160mW EIRP Maximum on channels 36-48) (800mW EIRP maximum on channels 52-64)	40
Japan (-J) (10 mW/MHz EIRP maximum)	40
Singapore (-S) (100 mW EIRP maximum)	20
Taiwan (-T) (800mW EIRP Maximum)	40

Maximum Power Levels Per Antenna Gain for IEEE 802.11a