With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cd11IfNativeTxPowerLevel
Cisco DOT11 Interfaces Native Tx Power Level
1.3.6.1.4.1.9.9.272.1.1.2.16.1.2
This is the unique index for a transmit power of a radio frequency band for the radio.
Back to CISCO-DOT11-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cd11IfNativeTxPowerLevel on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.