Nortel 6220 User Manual page 80

Note: It is recommended that you set the transmit power to "Maximum"
as the antenna (ET-PR12) have been designed to meet FCC regulation
specifying the maximum allowable EIRP at the maximum transmit
power.
[802.11b]
Frequency Channel
1
2
3
4
5
Transmit Rate
Transmit Power
Maximum
50%
25%
12.5%
WLAN Cable Access Point 6220 CSU NTPM99CA Rel 2.0 Issue 5 Dec 2005
2412 MHz
2417 MHz
2422 MHz
2427 MHz
2432 MHz
11 Mbps
5.5 Mbps
2 Mbps
1 Mbps
6 2437 MHz
7 2442 MHz
8 2447 MHz
9 2452 MHz
10 2457 MHz
11 2462 MHz
Antenna Gain
Maximum allowable antenna
Gain(CSU/11B): 12dBi
81