The 1200 series access point can be initially configured at the factory for single- or dual-radio operation.
You can also upgrade an access point configured for single-radio operation to support dual-radio
operation using a 5-GHz radio module or a 2.4-GHz mini-PCI radio card. The access point supports one
radio of each type, but it does not support two 2.4-GHz or two 5-GHz radios.

The 2.4-GHz mini-PCI radio card connects to an internal mini-PCI slot and is available in two
configurations:

•

IEEE 802.11b mini-PCI radio card, hereafter called 802.11b radio

•

IEEE 802.11g mini-PCI radio card, herafter called 802.11g radio

–

Requires Cisco IOS 12.2 (13)JA or later

The 5-GHz radio module connects to the access point’s modified card bus connector and is available in
three configurations:

•

IEEE 802.11a radio module with integrated antenna (low power), hereafter called the RM20A radio
module

•

IEEE 802.11a radio module with integrated antenna, hereafter called the RM21A radio module

–

Requires Cisco IOS 12.3 (2)JA or later

•

IEEE 802.11a radio module with external RP-TNC antenna connectors, hereafter called the RM22A
radio module

–

Requires Cisco IOS 12.3 (2)JA or later

All 5-GHz radio modules incorporate an Unlicensed National Information Infrastructure (UNII) radio
transceiver operating in the UNII 5-GHz frequency bands. The RM20A and the RM21A radio modules
contain dual integrated omnidirectional antennas and directional antennas for diversity operation. The
802.11b or 802.11g radio is called Radio0 and the 802.11a radio is called Radio1.