List of WLAN channels

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The List of WLAN channels is the legally allowed IEEE 802.11 or more commonly Wi-Fi Wireless LAN channels.
The 802.11 workgroup currently documents use in three distinct frequency ranges, 2.4 GHz, 3.6 GHz and 4.9/5.0 GHz bands.^[1] Each range is divided into multitude of channels. Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within these frequency ranges. In some countries, such as the United States, licensed Amateur Radio operators may use some of the channels at much higher power for long distance wireless access.

Contents [hide] 1 2.4 GHz (802.11b/g/n) 2 3.6 GHz (802.11y) 3 5 GHz (802.11a/h/j/n) 4 See also 5 References

2.4 GHz (802.11b/g/n)

Graphical representation of Wi-Fi channels in 2.4 GHz band

There are 14 channels designated in the 2.4 GHz range spaced 5 MHz apart (with the exception of a 12 MHz spacing before Channel 14). As the protocol requires 25 MHz of channel separation, adjacent channels overlap and will interfere with each other. Consequently, using only channels 1, 6, 11, and 14 is recommended to avoid interference.^[2]
Potential Wireless LAN uses of this range are documented by IEEE 802.11 clauses 18 (802.11b), 19 (802.11g) and 20 (802.11n). IEEE 802.11 clauses 14 and 15 also specify potential uses of this range, but did not see widespread implementation.
Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within these frequency ranges. Consult your local authorities as these regulations may be out of date as they are subject to change at any time. Most of the world will allow the first thirteen channels in the spectrum.

channel	frequency (MHz)	North America [3]	Japan[3]	Most of worldA [3][4][5][6][7]
1	2412	Yes	Yes	Yes
2	2417	Yes	Yes	Yes
3	2422	Yes	Yes	Yes
4	2427	Yes	Yes	Yes
5	2432	Yes	Yes	Yes
6	2437	Yes	Yes	Yes
7	2442	Yes	Yes	Yes
8	2447	Yes	Yes	Yes
9	2452	Yes	Yes	Yes
10	2457	Yes	Yes	Yes
11	2462	Yes	Yes	Yes
12	2467	NoB	Yes	Yes
13	2472	NoB	Yes	Yes
14	2484	No	11b onlyC	No

^A Earlier, in Spain the only allowable channels were 10–11, and in France 10–13. These restrictions have been removed since, and these countries are currently following the common European policy (channels 1–13).
^B In the USA, 802.11 operation in the channels 12 and 13 is actually allowed under low powered conditions. The 2.4 GHz Part 15 band in the US allows spread-spectrum operation as long as the 50-dB bandwidth of the signal is within in the range of 2400–2483.5 MHz^[8] which wholly encompasses both channels 12 and 13. A Federal Communications Commission (FCC) document clarifies that only channel 14 is forbidden and furthermore low-power transmitters with low-gain antennas may legally operate in channels 12 and 13.^[9] However, channels 12 and 13 are not normally used in order to avoid any potential interference in the adjacent restricted frequency band, 2483.5–2500 MHz^[10], which is subject to strict emission limits set out in 47 CFR §15.205^[11].
In Canada, 12 channels are available for use, 11 of which at full power and channel 12's transmit power limited. However, few devices have a method to enable a lower powered channel 12.
^C Channel 14 is valid only for DSSS and CCK modes (Clause 18 a.k.a. 802.11b) in Japan. OFDM (i.e. 802.11g) may not be used. (IEEE 802.11-2007 §19.4.2)

3.6 GHz (802.11y)

Except where noted, all information taken from Annex J of IEEE 802.11y-2008
This range is documented as only being allowed as a licensed band in the United States. Please see IEEE 802.11y for details.
Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within these frequency ranges. Consult your local authorities as these regulations may be out of date as they are subject to change at any time.

channel	frequency (MHz)	United States
		5 MHz	10 MHz	20 MHz
131	3657.5	Yes	No	No
132	3662.5	Yes	No	No
132	3660.0	No	Yes	No
133	3667.5	Yes	No	No
133	3665.0	No	No	Yes
134	3672.5	Yes	No	No
134	3670.0	No	Yes	No
135	3677.5	Yes	No	No
136	3682.5	Yes	No	No
136	3680.0	No	Yes	No
137	3687.5	Yes	No	No
137	3685.0	No	No	Yes
138	3689.5	Yes	No	No
138	3690.0	No	Yes	No

5 GHz (802.11a/h/j/n)

Except where noted, all information taken from Annex J of IEEE 802.11-2007 modified by amendments k, y and n.
Countries apply their own regulations to both the allowable channels, allowed users and maximum power levels within these frequency ranges. Consult your local authorities as these regulations may be out of date as they are subject to change at any time.

channel	frequency (MHz)	United States	Europe	Japan		Singapore	China	Israel	Korea	Turkey
		40/20 MHz[12]	40/20 MHz	40/20 MHz[13]	10 MHz	20 MHz	20 MHz	20 MHz[6]	20 MHz[14]	20 MHz
183	4915	No	No	No	Yes	No	No	No	No	No
184	4920	No	No	Yes	Yes	No	No	No	No	No
185	4925	No	No	No	Yes	No	No	No	No	No
187	4935	No	No	No	Yes	No	No	No	No	No
188	4940	No	No	Yes	Yes	No	No	No	No	No
189	4945	No	No	No	Yes	No	No	No	No	No
192	4960	No	No	Yes	No	No	No	No	No	No
196	4980	No	No	Yes	No	No	No	No	No	No
7	5035	No	No	No	Yes	No	No	No	No	No
8	5040	No	No	No	Yes	No	No	No	No	No
9	5045	No	No	No	Yes	No	No	No	No	No
11	5055	No	No	No	Yes	No	No	No	No	No
12	5060	No	No	No	No	No	No	No	No	No
16	5080	No	No	No	No	No	No	No	No	No
34	5170	No	No	No	No	No	No	Yes	Yes	Yes
36	5180	Yes	Yes	Yes	No	Yes	No	Yes	Yes	Yes
38	5190	No	No	No	No	No	No	Yes	Yes	Yes
40	5200	Yes	Yes	Yes	No	Yes	No	Yes	Yes	Yes
42	5210	No	No	No	No	No	No	Yes	Yes	Yes
44	5220	Yes	Yes	Yes	No	Yes	No	Yes	Yes	Yes
46	5230	No	No	No	No	No	No	Yes	Yes	Yes
48	5240	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes
52	5260	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes
56	5280	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes
60	5300	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes
64	5320	Yes	Yes	Yes	No	No	No	Yes	Yes	Yes
100	5500	Yes[15]	Yes	Yes	No	No	No	No	Yes	No
104	5520	Yes[15]	Yes	Yes	No	No	No	No	Yes	No
108	5540	Yes[15]	Yes	Yes	No	No	No	No	Yes	No
112	5560	Yes[15]	Yes	Yes	No	No	No	No	Yes	No
116	5580	Yes[15]	Yes	Yes	No	No	No	No	Yes	No
120	5600	No[15]	Yes	Yes	No	No	No	No	Yes	No
124	5620	No[15]	Yes	Yes	No	No	No	No	Yes	No
128	5640	No[15]	Yes	Yes	No	No	No	No	Yes	No
132	5660	No[15]	Yes	Yes	No	No	No	No	No	No
136	5680	Yes[15]	Yes	Yes	No	No	No	No	No	No
140	5700	Yes[15]	No	Yes	No	No	No	No	No	No
149	5745	Yes	No	No	No	Yes	Yes	No	Yes	Yes
153	5765	Yes	No	No	No	Yes	Yes	No	Yes	Yes
157	5785	Yes	No	No	No	Yes	Yes	No	Yes	Yes
161	5805	Yes	No	No	No	Yes	Yes	No	Yes	Yes
165	5825	Yes	No	No	No	Yes	Yes	No	Yes	Yes

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