Talk:List of WLAN channels

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Outdated 5GHz section

The 5GHz section is woefully out of date. Here is a summary of the current regulatory domains (from Linux regdb, July 2015):

            5000      5100      5200      5300      5400      5500      5600      5700      5800      5900
00 |         |         |      ████████████████       |        ███████████████████████████████████      | 
AD |         |         |      ████████████████       |        ██████████████████████         |         | Andorra
AE |         |         |      ████████████████       |        ███████████████████████████████████      | United Arab Emi
AF |         |         |      ████████████████       |        ██████████████████████         |         | Afghanistan
AI |         |         |      ████████████████       |        ██████████████████████         |         | Anguilla
AL |         |         |      ████████████████       |        ██████████████████████         |         | Albania
AM |         |         |      ████████████████       |         |         |         |         |         | Armenia
AN |         |         |      ████████████████       |        ██████████████████████         |         | Netherlands Ant
AR |         |         |      ████████████████       |        ███████████████████████████████████      | Argentina
AS |         |         |      ████████████████       |        ███████████████████████████████████      | American Samoa
AT |         |         |      ████████████████       |        ██████████████████████         |         | Austria
AU |         |         |      ████████████████       |        ██████████████████████  ███████████      | Coral Sea Islan
AW |         |         |      ████████████████       |        ██████████████████████         |         | Aruba
AZ |         |         |      ████████████████       |         |         |         |         |         | Nagorno-Karabak
BA |         |         |      ████████████████       |        ██████████████████████         |         | Bosnia and Herz
BB |         |         |      ████████████████       |         |         |         |  ███████████      | Barbados
BD |         |         |         |         |         |         |         |         |  ███████████      | Bangladesh
BE |         |         |      ████████████████       |        ██████████████████████         |         | Belgium
BF |         |         |      ████████████████       |        ███████████████████████████████████      | Burkina Faso
BG |         |         |      ████████████████       |        ██████████████████████ ████████████████  | Bulgaria
BH |         |         |      ████████████████       |         |         |         |  ███████████      | Bahrain
BL |         |         |      ████████████████       |        ██████████████████████         |         | 
BM |         |         |      ████████████████       |        ███████████████████████████████████      | Bermuda
BN |         |         |      ████████████████       |         |         |         |  ███████████      | Brunei
BO |         |         |         |    ████████       |         |         |         |  ███████████      | Bolivia
BR |         |         |      ████████████████       |        ███████████████████████████████████      | Brazil
BS |         |         |      ████████████████       |        ███████████████████████████████████      | Bahamas
BT |         |         |      ████████████████       |        ██████████████████████         |         | Bhutan
BY |         |         |      ████████████████       |        ██████████████████████         |         | Belarus
BZ |         |         |         |         |         |         |         |         |  ███████████      | Belize
CA |         |         |      ████████████████       |        ███████████████████████████████████      | Canada
CF |         |         |      ████████████████       |        ███████████████████████████████████      | Central African
CH |         |         |      ████████████████       |        ██████████████████████         |         | Switzerland
CI |         |         |      ████████████████       |        ███████████████████████████████████      | Cote d'Ivoire (
CL |         |         |      ████████████████       |         |         |         |  ███████████      | Chile
CN |         |         |      ████████████████       |         |         |         |  ███████████      | China
CO |         |         |      ████████████████       |        ███████████████████████████████████      | Colombia
CR |         |         |      ████████████████       |        ███████████████████████████████████      | Costa Rica
CX |         |         |      ████████████████       |        ███████████████████████████████████      | Christmas Islan
CY |         |         |      ████████████████       |        ██████████████████████         |         | Northern Cyprus
CZ |         |         |    ████████████████████     |      ██████████████████████████       |         | Czech Republic
DE |         |         |    ████████████████████     |      ██████████████████████████       |         | Germany
DK |         |         |      ████████████████       |        ██████████████████████         |         | Denmark
DM |         |         |      ████████████████       |         |         |         |  ███████████      | Dominica
DO |         |         |      ████████████████       |         |         |         |  ███████████      | Dominican Repub
DZ |         |         |      ████████████████       |        ██████████████████   |         |         | Algeria
EC |         |         |      ████████████████       |        ███████████████████████████████████      | Ecuador
EE |         |         |      ████████████████       |        ██████████████████████         |         | Estonia
EG |         |         |      ████████████████       |         |         |         |         |         | Egypt
ES |         |         |    ████████████████████     |      ██████████████████████████       |         | Spain
ET |         |         |      ████████████████       |        ██████████████████████         |         | Ethiopia
FI |         |         |      ████████████████       |        ██████████████████████         |         | Finland
FM |         |         |      ████████████████       |        ███████████████████████████████████      | Micronesia
FR |         |         |      ████████████████       |        ██████████████████████         |         | France
GB |         |         |      ████████████████       |        ██████████████████████         |         | United Kingdom
GD |         |         |      ████████████████       |        ███████████████████████████████████      | Grenada
GE |         |         |      ████████████████       |         |         |         |         |         | South Ossetia
GF |         |         |      ████████████████       |        ██████████████████████         |         | French Guiana
GH |         |         |      ████████████████       |        ███████████████████████████████████      | Ghana
GL |         |         |      ████████████████       |        ██████████████████████         |         | Greenland
GP |         |         |      ████████████████       |        ██████████████████████         |         | Guadeloupe
GR |         |         |      ████████████████       |        ██████████████████████         |         | Greece
GT |         |         |      ████████████████       |         |         |         |  ███████████      | Guatemala
GU |         |         |      ████████████████       |        ███████████████████████████████████      | Guam
GY |         |         |         |         |         |         |         |         |  ███████████      | Guyana
HK |         |         |      ████████████████       |        ██████████████████████  ███████████      | Hong Kong
HN |         |         |      ████████████████       |        ███████████████████████████████████      | Honduras
HR |         |         |      ████████████████       |        ██████████████████████         |         | Croatia
HT |         |         |      ████████████████       |        ███████████████████████████████████      | Haiti
HU |         |         |      ████████████████       |        ██████████████████████         |         | Hungary
ID |         |         |         |         |         |         |         |         |  █████████        | Indonesia
IE |         |         |      ████████████████       |        ██████████████████████         |         | Ireland
IL |         |         |    ████████████████████     |         |         |         |         |         | Israel
IN |         |         |      ████████████████       |         |         |         |  ███████████      | India
IR |         |         |         |         |         |         |         |         |  ███████████      | Iran
IS |         |         |      ████████████████       |        ██████████████████████         |         | Iceland
IT |         |         |      ████████████████       |        ██████████████████████         |         | Italy
JM |         |         |      ████████████████       |        ███████████████████████████████████      | Jamaica
JO |         |         |      ████████     |         |         |         |         |  ███████████      | Jordan
JP |████████ |  ██████ |      ████████████████       |        ██████████████████████         |         | Japan
KE |         |         |      ████████     |         |        ████████   |         |  █████  |         | Kenya
KH |         |         |      ████████████████       |        ██████████████████████         |         | Cambodia
KN |         |         |      ████████████████       |        ██████████████████████  █████████        | Saint Kitts and
KP |         |         |      ████████████████       |        ██████████████       |  █████████        | North Korea
KR |         |         |      ████████████████       |        ██████████████████████  ███████████      | South Korea
KW |         |         |      ████████████████       |         |         |         |         |         | Kuwait
KY |         |         |      ████████████████       |        ███████████████████████████████████      | Cayman Islands
LB |         |         |      ████████████████       |        ███████████████████████████████████      | Lebanon
LC |         |         |      ████████████████       |        ██████████████████████  █████████        | Saint Lucia
LI |         |         |      ████████████████       |        ██████████████████████         |         | Liechtenstein
LK |         |         |      ████████████████       |        ███████████████████████████████████      | Sri Lanka
LS |         |         |      ████████████████       |        ██████████████████████         |         | Lesotho
LT |         |         |      ████████████████       |        ██████████████████████         |         | Lithuania
LU |         |         |      ████████████████       |        ██████████████████████         |         | Luxembourg
LV |         |         |      ████████████████       |        ██████████████████████         |         | Latvia
MA |         |         |      ████████████████       |         |         |         |         |         | Morocco
MC |         |         |      ████████████████       |        ██████████████████████         |         | Monaco
MD |         |         |      ████████████████       |        ██████████████████████         |         | Pridnestrovie (
ME |         |         |      ████████████████       |        ██████████████████████         |         | Montenegro
MF |         |         |      ████████████████       |        ██████████████████████         |         | 
MH |         |         |      ████████████████       |        ███████████████████████████████████      | Marshall Island
MK |         |         |      ████████████████       |        ██████████████████████         |         | Macedonia
MN |         |         |      ████████████████       |        ███████████████████████████████████      | Mongolia
MO |         |         |      ████████████████       |        ███████████████████████████████████      | Macau
MP |         |         |      ████████████████       |        ███████████████████████████████████      | Northern Marian
MQ |         |         |      ████████████████       |        ██████████████████████         |         | Martinique
MR |         |         |      ████████████████       |        ██████████████████████         |         | Mauritania
MT |         |         |      ████████████████       |        ██████████████████████         |         | Malta
MU |         |         |      ████████████████       |        ███████████████████████████████████      | Mauritius
MV |         |         |    ████████████████████     |         |         |         | █████████████     | Maldives
MW |         |         |      ████████████████       |        ██████████████████████         |         | Malawi
MX |         |         |      ████████████████       |        ███████████████████████████████████      | Mexico
MY |         |         |      ████████████████       |         |         |         |  ███████████      | Malaysia
NG |         |         |         |    ████████       |         |         |         |  ███████████      | Nigeria
NI |         |         |      ████████████████       |        ███████████████████████████████████      | Nicaragua
NL |         |         |      ████████████████       |        ██████████████████████         |         | Netherlands
NO |         |         |    ████████████████████     |      █████████████████████████████████|████     | Norway
NP |         |         |      ████████████████       |         |         |         |  ███████████      | Nepal
NZ |         |         |      ████████████████       |        ███████████████████████████████████      | New Zealand
OM |         |         |      ████████████████       |        ██████████████████████         |         | Oman
PA |         |         |      ████████████████       |         |         |         |  ███████████      | Panama
PE |         |         |      ████████████████       |        ███████████████████████████████████      | Peru
PF |         |         |      ████████████████       |        ██████████████████████         |         | Clipperton Isla
PG |         |         |      ████████████████       |        ███████████████████████████████████      | Papua New Guine
PH |         |         |      ████████████████       |        ███████████████████████████████████      | Philippines
PK |         |         |         |         |         |         |         |         |  ███████████      | Pakistan
PL |         |         |      ████████████████       |        ██████████████████████         |         | Poland
PM |         |         |      ████████████████       |        ██████████████████████         |         | Saint Pierre an
PR |         |         |      ████████████████       |        ███████████████████████████████████      | Puerto Rico
PT |         |         |      ████████████████       |        ██████████████████████         |         | Portugal
PW |         |         |      ████████████████       |        ███████████████████████████████████      | Palau
PY |         |         |      ████████████████       |        ███████████████████████████████████      | Paraguay
QA |         |         |         |         |         |         |         |         |  ███████████      | Qatar
RE |         |         |      ████████████████       |        ██████████████████████         |         | Reunion
RO |         |         |      ████████████████       |        ██████████████████████         |         | Romania
RS |         |         |    ████████████████████     |      ██████████████████████████       |         | Serbia
RU |         |         |      ████████████████       |         |         |    ███████████████████      | Russia
RW |         |         |      ████████████████       |        ███████████████████████████████████      | Rwanda
SA |         |         |      ████████████████       |        ██████████████████████         |         | Saudi Arabia
SE |         |         |      ████████████████       |        ██████████████████████         |         | Sweden
SG |         |         |      ████████████████       |        ███████████████████████████████████      | Singapore
SI |         |         |      ████████████████       |        ██████████████████████         |         | Slovenia
SK |         |         |      ████████████████       |        ██████████████████████         |         | Slovakia
SN |         |         |      ████████████████       |        ███████████████████████████████████      | Senegal
SR |         |         |      ████████████████       |        ██████████████████████         |         | Suriname
SV |         |         |      ████████████████       |         |         |         |  ███████████      | El Salvador
TC |         |         |      ████████████████       |        ███████████████████████████████████      | Turks and Caico
TD |         |         |      ████████████████       |        ██████████████████████         |         | Chad
TG |         |         |      ████████████████       |        ██████████████████████         |         | Togo
TH |         |         |      ████████████████       |        ███████████████████████████████████      | Thailand
TN |         |         |      ████████████████       |         |         |         |         |         | Tunisia
TR |         |         |      ████████████████       |        ██████████████████████         |         | Turkey
TT |         |         |      ████████████████       |        ███████████████████████████████████      | Trinidad and To
TW |         |         |         |      ██████       |        ██████████ |    ██████  ███████████      | Taiwan
TZ |         |         |         |         |         |         |         |         |  ███████████      | Tanzania
UA |         |         |    ████████████████████     |        ██████████████████   |  ███████████      | Ukraine
UG |         |         |      ████████████████       |        ███████████████████████████████████      | Uganda
US |         |         |      ████████████████       |        ███████████████████████████████████      | United States
UY |         |         |      ████████████████       |        ███████████████████████████████████      | Uruguay
UZ |         |         |      ████████████████       |         |         |         |         |         | Uzbekistan
VC |         |         |      ████████████████       |        ██████████████████████         |         | Saint Vincent a
VE |         |         |      ████████████████       |         |         |         |  ███████████      | Venezuela
VI |         |         |      ████████████████       |        ███████████████████████████████████      | U.S. Virgin Isl
VN |         |         |      ████████████████       |        ███████████████████████████████████      | Vietnam
VU |         |         |      ████████████████       |        ███████████████████████████████████      | Vanuatu
WF |         |         |      ████████████████       |        ██████████████████████         |         | Wallis and Futu
WS |         |         |      ████████████████       |        ██████████████████████         |         | Samoa
YT |         |         |      ████████████████       |        ██████████████████████         |         | Mayotte
ZA |         |         |      ████████████████       |        ██████████████████████         |         | South Africa
ZW |         |         |      ████████████████       |        ██████████████████████         |         | Zimbabwe
            5000      5100      5200      5300      5400      5500      5600      5700      5800      5900

Reason for page

I'm adding this because this information is missing from wikipedia. 802.11a channel/frequency mapping is difficult to find and I expected to find it from Wikipedia. Information on channel/frequency mappings should be readily available. I'm hoping this article will find a better place or name, but still exist in wikipedia, preferably 802.11a/b/g/n channels all on one page. --Joneskoo 16:45, 22 September 2007 (UTC)

I'd also like to get references to some document that defines this channel naming scheme. Apparently on 5 GHz it is 5000 MHz + channel * 5 MHz, for example channel 36 = 5000 MHz + 36 * 5 MHz. I used http://www.moonblinkwifi.com/80211a_frequency_channel_map.cfm as a source but I'd really like some better reference to the article. --Joneskoo 16:48, 22 September 2007 (UTC)

IEEE 802.11-2012 § 18.3.8.4.2 provides that reference.J0boyers (talk) 05:28, 5 January 2013 (UTC)

France

Haven't the channel restrictions in France been removed in the meantime? 212.213.204.99 05:18, 2 November 2007 (UTC)

Find a verifiable source and change the text in the article. -- KelleyCook (talk) 20:51, 3 January 2008 (UTC)

Done - 82.123.102.83 (talk) 17:10, 13 March 2008 (UTC)

Israel

Maybe add Israel to the first table (channels 3-9)? 87.194.223.183 00:51, 4 December 2007 (UTC)

Give a definitive source (either a link to the Israeli law or an IEEE citation) and then it can go in. -- KelleyCook (talk) 22:04, 4 December 2007 (UTC)

More channels are now available for use in Israel (basically aligning with European regulations). Link provided by Israeli MOC as a response to my query: https://moj.my.salesforce.com/sfc/dist/version/download/?oid=00D1t000000uX5h&ids=0683Y00000DcoLF&d=%2Fa%2F3Y000000h5ea%2FljcftGq2yZ9bwH.XH1EkZx5WIaxd9o8YOEQh.lic3vM&asPdf=false

A copy is also available here: https://docs.google.com/document/d/1aswr4MGlTVpKcaYBwDp1oEUHxRJAxxT8/edit I would have updated the table but I don't want to risk it (not sure how to properly edit tables) — Preceding unsigned comment added by GilbsonLP (talk • contribs) 23:03, 16 January 2021 (UTC)

Wrong information

Please be careful regarding assertions of legally approved channels... (in the first section) References to 802.11 standards do not help much (not even 802.11-2007) as even this document is actually about three years old since I and 300+ other 802.11 members wrote it. Regulators (esp Japan and a couple of EU countries) have made changes to the channels in the last three years. To be crystal clear referencing 802.11 is not proper as it is not a regulatory organizarion and it lacks any legal authority to set channels. 802.11 merely reports what the status is at the time of the standards draft which is three or more years earlier them the date... I tried to make updates but now it appears that I am blocked and I do not want to refer to myself as an authority reveling who i am, less the regulatory rnvironmrnt change and litigation happen do to the section not being updated... —Preceding unsigned comment added by 76.118.191.206 (talk) 03:48, 2 January 2008 (UTC)

You're changes are not being blocked. The message I left on your talk page simply was stating that Wikipedia demands verifiable sources. I realize that by its very nature of being a multiple committee driven multi-year process, the IEEE 802.11-2007 information is out-of-date. It would be more than welcome to have newer and correct information. But any changes that you add needs to be verifiable, such as was included with the recent change to the Japan 5Ghz section. A secondary problem is that you can't put a blanket "This is Wrong information" statement, even if it is true, as it both has a NPOV stance and breaks the Wikipedia:No disclaimers in articles policy. The article already states three times that "These regulations are subject to change at any time." Let me make try and compromise by make that more topical -- KelleyCook (talk) 20:51, 3 January 2008 (UTC)

76.118.191.206 145.224.73.53 (talk) 22:00, 20 October 2023 (UTC)

Asia

Asia is not a regulatory domain!? Find me a country on this planet called "Asia" please remove it —Preceding unsigned comment added by 76.118.191.206 (talk) 18:28, 3 January 2008 (UTC)

Gone, next time please WP:Be bold -- KelleyCook (talk) 21:01, 3 January 2008 (UTC)

5GHz Channels in the US

According to http://www.fcc.gov/oet/info/rules/part15/part15-9-20-07.pdf page 130 the bands 5.15-5.25 are available for unlicensed use at 50mW, 5.25-5.35 and 5.47-5.725 at 250mW and 5.725-5.825 at 1W. Is there another reason channels 52-64 are listed as No for the US? (I'm no expert in RF so not editing the article) — Preceding unsigned comment added by 131.216.7.132 (talk) 23:02, 24 March 2008 (UTC)

On 2020-11-18, the FCC Adopted Report and Order FCC-20-164 which added 5.850-5.925 MHz to 47 CFR 15.401 for Wifi use https://www.fcc.gov/document/fcc-modernizes-59-ghz-band-improve-wi-fi-and-automotive-safety-0 Mrdvt92 (talk) 14:53, 3 December 2020 (UTC)

Thanks for reporting this, I've now submitted a patch for this addition. -bkil (talk) 22:45, 3 December 2020 (UTC)

Spain has more channels

Spain, like the rest of Europe, allows channels 1-13 (instead of 10-11). I have found some places where it says it is only channel 10 and 11, and I don't know why.

According to note UN-85 in CNAF (spanish legal frequency table) you can use 2400-2483,5 MHz for indoor wireless data networks (100 mW EIRP). http://es.wikipedia.org/wiki/CNAF http://www.mityc.es/Telecomunicaciones/Secciones/Espectro/cnaf/

Moreover, any modern wifi equipment legally sold in Spain supports channels 1-13. —Preceding unsigned comment added by LatinSuD (talk • contribs) 15:56, 2 May 2008 (UTC)

I took out the two columns which someone edited back to the (out of date) 802.11 doco. Thanks for the reference. -- ~~ — Preceding unsigned comment added by GregGarner (talk • contribs) 19:36, 22 September 2009 (UTC)

DFS for 5GHz channels

There are some channels that have a special use case called DFS, and it would be a good enhancement of this page to list DFS only channels. My understanding is that 5.25~5.35GHz (Ch52~64) and 5.47~5.725GHz (Ch100~140) can only be used if you do DFS properly and have your radio licensed as being DFS compliant. Basically DFS means that the system detects someone using the channel (typically radar) and then moving to another channel. The FCC website has extensive information about DFS. GregGarner (talk) 19:40, 22 September 2009 (UTC)

DFS client operation does not require any special tests, and TCBs can certify them. It is the DFS owners (access points) that must be tested by FCC labs to be certified prior to sale. A February 20, 2013 meeting of the FCC Commission will approve a new NPRM opening an additional 110 MHz for operation under DFS rules. ~~petere83~~

22, 25 or 40 MHz bandwidth?

The '2.4 GHz (802.11b/g/n)' section mentions 25 MHz of channel separation, and the picture shows 22 MHz per channel bandwidth usage. However, the n version of the standard (802.11n) talks about 40 MHz of bandwidth. Should this be clarified here? Tim-mnm (talk) 14:51, 16 October 2009 (UTC)

According to IEEE 802.11n-2009 40 MHz is for double channel mode within 802.11n (max. 600 Mbit/s instead of 288.90). Concerning the 22/25 MHz bandwith per channel both numbers make sense: With 25 MHz one could use channel 1, 6 and 11 without overlap and with 22 MHz for each channel even four channels (1, 6, 11 and 14 – the boundary between 11 and 14 would be exactly 2473 MHz) should be usable without overlap. --Frequencyhopper (talk) 14:55, 23 December 2009 (UTC)

802.11b ist outdated since long, simply use the same modulation-modes as on 5GHz and also the same channel-spacing. That means you can use wifi-channel 1,5,9,13 (keep in mind that in the USA channel 13 has some limitations). Keep it clean for the User, do NOT name the 40MHZ-Channels by mid-frequency, name them by 20MHz fallback-channel. So tell the user to select channel 1 or channel 13 for 40MHz bandwidth on 2.4GHz wifi. In the USA you might tell them to use channel 1 or 9, if they do not jet have hardware that is legal on wifi-channel 13. --DG8FZ 16:26, 27 July 2015 (UTC)

Channel 14

Is it true that the use of channel 14 is restricted or even prohibited in most countries of the world mainly because it conflicts with the satellite phone services operated by Globalstar and Iridium which use the frequency range from 2483.5 MHz to 2500 MHz? --Frequencyhopper (talk) 22:13, 22 December 2009 (UTC)

I don't know about other countries but in the United States Globalstar has a proposal being reviewed for government approval to allow for only their APs to broadcast over channel 14 but also opening up channels 12 & 13 for general public use. JRey (talk) 18:06, 31 July 2014 (UTC)

The current diagram shows channel 14 for the U.S., but that isn't allowed by FCC regulations. I think the diagram needs updated to remove channel 14. — Preceding unsigned comment added by 192.55.20.36 (talk) 20:42, 27 April 2017 (UTC)

5GHz Channel 165 in the US

FCC 15.407 covers channels within 5.15-5.25GHz, 5.47-5.725GHz and 5.725-5.825GHz bands. Since the center frequency of channel 165 is at 5.825GHz, then part of the channel's spectrum will go outside the 5.825GHz band edge. I don't think channel 165 can be covered by FCC 15.407 [12]. The FCC 15.247 [8] rules include channels in band 5725-5850MHz. The channel #165 which spans from 5815MHz-5835Mhz is allowed in the US, but I think it should be covered by FCC 15.247 [8] instead of FCC 15.407 [12]. 5GHz (802.11a/h/j/n) table has reference to [12] in the header for United States. I think a reference to 15.247 [8] needs to be added to Channel 165. Comments?

On 2020-11-18, the FCC Adopted Report and Order FCC-20-164 which added 5.850-5.925 MHz to 47 CFR 15.401 for Wifi use https://www.fcc.gov/document/fcc-modernizes-59-ghz-band-improve-wi-fi-and-automotive-safety-0 Mrdvt92 (talk) 14:53, 3 December 2020 (UTC)

Cisco has been shipping 802.11 access points using channel 165 for a long time. They might not have the same maximum transmit power as the other ISM channels.~~petere83~~ — Preceding unsigned comment added by Petere83 (talk • contribs) 05:51, 20 January 2013 (UTC)