NETGEAR WAB501 - 802.11a/b Dual Band PC Card, User Manual, Page: 13 / 17

The WAB501 user can use thirteen channels.
Note: The available channels supported by the wireless products in various countries are different.
Note: The available channels supported by the wireless products in various countries are
different. For example, Channels 1 to 11 are supported in the U.S. and Canada, and Channels
1 to 13 are supported in Europe and Australia.
802.11a
IEEE 802.11a utilizes 300 MHz of bandwidth in the 5 GHz Unlicensed National Information
Infrastructure (U-NII) band. Though the lower 200 MHz is physically contiguous, the FCC
has divided the total 300 MHz into three distinct domains, each with a different legal
maximum power output. Below is a table of summary for different regulatory domains.
Note: Please check your local Authority for updated information on the available frequency
and maximum power output.
The 802.11a uses OFDM to define a total of 8 non-overlapping 200 MHz channels across the
2 lower bands; each of these is divided into 52 subcarriers and each carrier is approximately
300 KHz wide. By comparison, 802.11b uses only 3 non-overlapping channels.
IEEE 802.11a Channel Allocations
U-NII Band Low Middle High
Frequency (GHz) 5.150 – 5.250 5.250 – 5.350 5.725 – 5.825
Max. Power Output 50 mW for US,
200 mW for Canada,
Europe, & Australia. 250 mW for US,
200 mW for Europe
& Australia,
1 Watt for Canada. 1 Watt for US &
Australia,
4 Watts for Canada,
25 mW for Europe.
Channel Frequency
36 5.180 GHz
40 5.200 GHz
44 5.220 GHz
48 5.240 GHz
52 5.260 GHz
56 5.280 GHz
60 5.300 GHz
64 5.320 GHz
149 5.745 GHz
153 5.765 GHz
157 5.785 GHz
161 5.805 GHz
165 5.825 GHz
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