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Cisco Access Points: Which Power Levels Does My AP Support?

Cisco APs support a number of discrete transmit power levels which are 3dB apart. They are usually numbered levels 1 (highest) down to 7 or 6 (lowest).

The numbers of levels and the transmit power values assigned vary between models and regions.

The quickest way to determine the levels supported by your AP is to logon to your WLC and execute the following CLI command:

show ap config 802.11b <ap-name>

This will list out a whole lot of information, including a section which starts with the title: "TX Power". This contains the levels and corresponding dBm levels supported. Here is a sample:

Tx Power
      Num Of Supported Power Levels ............. 6
      Tx Power Level 1 .......................... 16 dBm
      Tx Power Level 2 .......................... 13 dBm
      Tx Power Level 3 .......................... 10 dBm
      Tx Power Level 4 .......................... 7 dBm
      Tx Power Level 5 .......................... 4 dBm
      Tx Power Level 6 .......................... 1 d…