D-4
Cisco Aironet 1200 Series Access Point Hardware Installation Guide
OL-4310-05
Appendix D      Channels and Antenna Settings
Channels
IEEE 802.11a (5-GHz Band)
The channel identifiers, channel center frequencies, and regulatory domains of each IEEE 802.11a 
20-MHz-wide channel are shown in Table D-3 and Table D-4.
Note All channel sets are restricted to indoor usage except the Americas (–A), which allows for indoor and 
outdoor use on frequencies above 5250 MHz.
.
Table D-3 Channels for IEEE 802.11a for the RM20A Radio Module
Channel 
Identifier
Center 
Frequency
(MHz)
Regulatory Domains
Americas (–A) Japan (–J) Singapore (–S) Taiwan (–T)
34 5170 – X – –
36 5180 X – X –
38 5190 – X – –
40 5200 X – X –
42 5210 – X – –
44 5220 X – X –
46 5230 – X – –
48 5240 X – X –
52 5260 X – – X
56 5280 X – – X
60 5300 X – – X
64 5320 X – – X