Specifications

4-2
Cisco Aironet 1520 Series Outdoor Mesh Access Point Hardware Installation Guide
OL-11321-08
Chapter 4 Cisco Aironet 1140 Series Lightweight Access Points
Channels and Maximum Power Levels
Channels and Maximum Power Levels
2.4-GHz Band Maximum Power Levels
Table 4-1 indicates the maximum power levels for the 802.11b/g/n standard for the 2.4-GHz radio.
Tables 4-2 through 4-4 show 2.4-GHz b/g/n radio maximum power levels for the -A (America), -E
(ETSI), and -P (Japan) regulatory domains.
Ta b l e 4-1 802.11 b/g/n 2.4-GHz Maximum Transmit Power
IEEE Standards TX Power Out
(dBm)
Antenna & Transmitter Operation
802.11 BW
(MHz)
IEEE Data Rates Notes Tx1+Tx2=Total Notes
B 20 CCK 1 to 11 Mbps CCK Modes 20 + 0 = 20 Tx Diversity— Only one transmitter
on at a time; both antennas used.
G 20 non HT-20 6 to 54 Mbps Legacy, OFDM
Modes
17 + 17 = 20 Dual antennas— Both transmitters on
simultaneously using CSD of 50 ns.
N 20 Ht-20 MCS0 to 15 MIMO Modes 17 + 17 = 20 Dual antennas— Both transmitters on
simultaneously using CSD of 400 ns.
N 40 HT-40 MCS0 to 15 MIMO Modes 17 + 17 = 20 Dual antennas— Both transmitters on
simultaneously using CSD of 400 ns.
N 40 non HT-40
(duplicate)
6 to 54 Mbps Duplicate Mode 17 + 17 = 20 Dual antennas— Both transmitters on
simultaneously using CSD of 50 ns.
N 40 Beamforming
(legacy
clients)
6 to 54 Mbps Legacy, OFDM
Beamforming
Modes
17 + 17 = 20 Dual antennas— Both transmitters on
simultaneously using using phase
adjustment for beamforming.