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D-5
Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide
OL-4211-03
Appendix D Channels, Power Levels, and Antenna Gains
Maximum Power Levels and Antenna Gains
IEEE 802.11g
An improper combination of power level and antenna gain can result in equivalent isotropic radiated
power (EIRP) above the amount allowed per regulatory domain. Table D-5 indicates the maximum EIRP
allowed for each data rate in the IEEE 802.11g regulatory domains.
Table D-5 Maximum EIRP for IEEE 802.11g
Data Rate
Maximum EIRP for PC-Cardbus Card
with 0-dBi Antenna Gain and PCI Card
with 1-dBi Antenna Gain
mW dBm
6 Mbps 50 17
9 Mbps 50 17
12 Mbps 50 17
18 Mbps 50 17
24 Mbps 50 17
36 Mbps 40 16
48 Mbps 31.6 15
54 Mbps 20 13