802.11a and FCC 5 GHz Specifications
•FCC regulations for UNII-1 and UNII-2
–UNII-1
•FCC max 50 mW 
•802.11a max 40 mW
–With max 6 dBi antenna gain
•802.11a max of 40 mW complies with all countries except Singapore (20 mW)
–UNII-2
•FCC max 250 mW
•802.11a max 200 mW