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Maximum power output
The U-NII band is split into three working domains, with different power outputs allowed:
>
U-NII 1 band: maximum power output of 50 mW.
>
U-NII 2 band: maximum power output of 250 mW.
>
U-NII 3 band: maximum power output of 1 W (esp. for outdoor applications).
The following table indicates the maximum power levels and antenna gains allowed for each IEEE 802.11a
regulatory domain:
Regulatory Domain
America
(160 mW EIRP maximum on channels 36-48,
(800 mW EIRP maximum on channels 52-64)
Japan
(10 mW/MHz EIRP maximum)
Singapore
(100 mW EIRP maximum)
Taiwan
(800 mW EIRP maximum)
Range
Typical indoor range is 10 m at 54 Mbps and 60 m at 6 Mbps. By using directional antennas, you can enlarge
the range of your network.
i
The use of directional antennas is regulated country by country. Check the local regulations before
using directional antennas.
18
802.11 Standards
Maximum Power Level (mW) with
6 dBi Antenna Gain
40
40
20
40
E-DOC-CTC-20060609-0001 v2.0
Chapter 2
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