At what frequency does a client card communicate?
A. The 802.11b and 802.11g standards define a total of 14 frequency channels in the 2.4 GHz band. The 802.11a standard defines 12 channels in the 5 GHz band for UNII-1 communications. In 802.11b/g installations, channels 1 through 11 can be used within the United States. These are public frequencies and are unlicensed by the Federal Communications Commission (FCC). Most of Europe can use channels 1 through 13. Channels 1 through 14 are allowed in Japan. In 802.11a access point/client installations, channels 36, 40, 44, 48, 52, 56, 60 and 64 can be used in the United States. These are public UNII-1 frequencies and are unlicensed by the FCC. Most of Europe can use these same channels. Channels 34, 38, 42 and 46 are allowed in Japan.
