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As in US , we can't use anything above 11, which country has all channels available for use on Wifi?

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closed as off topic by hhlp, jokerdino, con-f-use, SirCharlo, izx Aug 22 '12 at 7:58

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up vote 5 down vote accepted

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 Consult your local authorities as these regulations may be out of date as they are subject to change at any time.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.

To Answer you question its Japan. Check This out !

Source: http://en.wikipedia.org/wiki/List_of_WLAN_channels

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