With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoDot11HtPhyAntennaGroup
cisco Dot11 High-Throughput Physical Antenna Group
1.3.6.1.4.1.9.9.607.2.2.1
This collection of objects represent the antennae-related parameters.
Back to CISCO-DOT11-HT-PHY-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoDot11HtPhyAntennaGroup 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.