![]() To resolve this problem, 802.11d was approved in 2001. Since there are many differences globally in which frequencies can be used (and at which power levels), if you move from one region to another your device may try to use frequencies that may be illegal to use in that region. Other countries/regions will allow/disallow frequency based on their own requirements and current (or historic) uses. ![]() There are several challenges to overcome when using the newly available frequencies, but we may see their adoption in some products as early as 2015. As of February 2013, the FCC did agree to additional frequency for unlicensed use and the current allocation is as follows (I apologize as I forget from where I saved this image and when searching came across it in several locations so can't attribute properly): In the US, the government entity that regulates the use of RF is the FCC. Radio frequency is a limited resource that is managed individually by various organizations geographically. ![]()
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