With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cd11IfRfNativePowerEntry
Cisco DOT11 Interfaces Rf Native Power Entry
1.3.6.1.4.1.9.9.272.1.1.2.17.1
Each entry specifies the transmit power settings of a particular radio frequency band, with a specified modulation technique, for an IEEE 802.11 radio interface.
Back to CISCO-DOT11-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cd11IfRfNativePowerEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.
