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Beginner

Transmit power for A bands

Folks,

           I have 3 identical Aps 3802 with identical Antennas(2524). I want 50Mw(17 dbm) power from them.

What I am noticing is that depending on the channel number (statically assigned) they are requiring different power settings to transmit 50Mw.

 

Channel 157 -- Power Level 3

Channel 108 --- Power Level 1

Chennel 64 ---- Power Level 2

 

 

I know that 802.11 has different max power settings for various A bands (UNI-I,II,III). But still  this is not making sense to me.

 

Any insight would be highly appreciated as to why the power settings are different for different channels for the same output.

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Beginner

The number scale is different depending on the AP model and the band it's transmitting in.  I agree, it would be nice if Cisco made this a little more intuitive.  If you want to see the transmit power at each level you can type "show ap config 802.11a <AP NAME>" on the command line of the WLC.  Scroll down a bit and you'll see something like the following:


Num Of Supported Power Levels ............. 5
Tx Power Level 1 .......................... 15 dBm
Tx Power Level 2 .......................... 12 dBm
Tx Power Level 3 .......................... 9 dBm
Tx Power Level 4 .......................... 6 dBm
Tx Power Level 5 .......................... 3 dBm
Tx Power Configuration .................... AUTOMATIC
Current Tx Power Level .................... 2
Tx Power Assigned By ...................... DTPC

 

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