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Tech Stuff - Unlicensed Frequencies

The following table defines the unlicensed frequencies available in a number of countries:

Country Frequency Notes Standards
US 2.400-2.483.5 GHz ISM Band (max 4W EIRP) 802.11/11b
  902-928 MHz ISM Band (Used by GSM in most countries)  
  5.800-5.925 GHz ISM Band  
  5.15-5.25 GHz UNII (Unlicensed - National Information Infrastructure) max. 200 mw EIRP 802.11a
  5.25-5.35 GHz UNII max. 1w EIRP 802.11a
  5.725-5.825 GHz UNII max. 4w EIRP 802.11a

For a complete list of all US frequencies go to the US Frequency Allocation site.

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