Cisco AIR-AP1220B-A-K9 Hardware Installation Guide - Page 98
Maximum Power Levels and Antenna Gains, IEEE 802.11b (2.4 GHz Band)
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Maximum Power Levels and Antenna Gains Appendix D Channels and Antenna Settings Maximum Power Levels and Antenna Gains IEEE 802.11b (2.4 GHz Band) 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-3 indicates the maximum power levels and antenna gains allowed for each regulatory domain. Table D-3 Maximum Power Levels Per Antenna Gain for IEEE 801.11b Regulatory Domain Americas (-A) (4 watts EIRP maximum) EMEA (-E) (100 mW EIRP maximum) Japan (-J) (10 mW/MHz EIRP maximum) Antenna Gain (dBi) 0 2.2 5.2 6 8.5 12 13.5 21 0 2.2 5.2 6 8.5 12 13.5 21 0 2.2 5.2 6 8.5 12 13.5 21 Maximum Power Level (mW) 100 100 100 100 100 100 100 20 100 50 30 30 5 5 5 1 50 30 30 30 n/a n/a 5 n/a Cisco Aironet 1200 Series Access Point Hardware Installation Guide D-4 OL-2155-02