Channels and Maximum Power Settings for Cisco Aironet Lightweight Access Points, OL-11321-07
Cisco Aironet 1500 Series Outdoor Mesh Access Points

Table Of Contents

Cisco Aironet 1500 Series Mesh Access Points

Channels and Maximum Power Levels

IEEE 802.11b/g (2.4-GHz Band)

IEEE 802.11a (5-GHz Band)

Antenna Settings

Maximum Power Levels Allowed in Some Regulatory Domains

Special Country Restrictions

Changing the Lightweight Access Point Output Power


Cisco Aironet 1500 Series Mesh Access Points


This chapter lists the 1500 series mesh access point IEEE 802.11b/g (2.4-GHz) and IEEE 802.11a (5-GHz) channels and the maximum power levels supported by the world's regulatory domains. For additional product hardware information refer to the Cisco Aironet 1500 Series Outdoor Mesh Access Point Hardware Installation Guide.

The AIR-LAP1510 access point model supports both 802.11b/g and 802.11a radios. The AIR-LAP1505 access point model only supports a 802.11b/g radio.

The following topics are covered in this chapter:

Channels and Maximum Power Levels

Antenna Settings

Special Country Restrictions

Channels and Maximum Power Levels

IEEE 802.11b/g (2.4-GHz Band)

When shipped from the factory, the access points support the channels and maximum power levels listed in Table 9-1 for their regulatory domain.


Note In Table 9-1, the operating data rates (in Mbps) are shown in the CCK and OFDM table cells. For example: CCK 1-11 indicates CCK data rates of 1 to 11 Mbps and All indicates all CCK and OFDM data rates.



Note The AIR-LAP1505 access point model only supports the -A, -E, and -P regulatory domains.


Table 9-1 Channels and Maximum Conducted Power for the 802.11b/g Radio with Up to 8-dBi Antennas 

Channel ID
Center Freq
(MHz)
Maximum Conducted Power Levels (dBm) in the Regulatory Domains
-A
-C
-E
-K
-N
-S
-P
CCK
1-11
OFDM
6-36
OFDM48
OFDM
54
All
All
All
CCK
1-11
OFDM
6-36
OFDM48
OFDM
54
CCK
1-11
OFDM
6-36
OFDM48
OFDM
54
All

1

2412

23

19.5

19.5

19.5

14

14

14

23

19.5

19.5

19.5

17

17

16

15

14

2

2417

23.5

21.5

21.5

21

14

14

14

23.5

21.5

21.5

21

17

17

16

15

14

3

2422

24

23

22

21

14

14

14

24

23

22

21

17

17

16

15

14

4

2427

24

24

22

21

14

14

14

24

24

22

21

17

17

16

15

14

5

2432

24

24

22

21

14

14

14

24

24

22

21

17

17

16

15

14

6

2437

24

24

22

21

14

14

14

24

24

22

21

17

17

16

15

14

7

2442

24

24

22

21

14

14

14

24

24

22

21

17

17

16

15

14

8

2447

24

24

22

21

14

14

14

24

24

22

21

17

17

16

15

14

9

2452

24

22.5

22

21

14

14

14

24

22.5

22

21

17

17

16

15

14

10

2457

23.5

21.5

21.5

21

14

14

14

23.5

21.5

21.5

21

17

17

16

15

14

11

2462

23

19.5

19.5

19.5

14

14

14

23

19.5

19.5

19.5

17

17

16

15

14

12

2467

-

-

-

-

14

14

14

-

-

-

 

17

17

16

15

14

13

2472

-

-

-

-

14

14

14

-

-

-

 

17

17

16

15

14

14

2484

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

14


IEEE 802.11a (5-GHz Band)

When shipped from the factory, the access points support the channels and maximum power levels listed in Table 9-2 and Table 9-3 for their regulatory domain.


Note In Table 9-2 and Table 9-3, the operating data rates (in Mbps) are shown in the OFDM table cells. For example: OFDM 6-24 indicates 6 to 24 Mbps data rates and OFDM All indicates 6 to 54 Mbps data rates.


Table 9-2 Channels and Maximum Conducted Power for IEEE 802.11a Radio with Up to 17 dBi Antennas

Channel
ID
Center Frequency
(MHz)
Maximum Conducted Power Levels (dBm) in the Regulatory Domains
-A
-C
-E
-K
OFDM
6-24
OFDM
36
OFDM
48
OFDM
54
OFDM
6-24
OFDM
36
OFDM
48
OFDM
54
OFDM
6-24
OFDM
36
OFDM
48
OFDM
54
OFDM
All

(4900 to 5100 MHz)

-

4920

-

-

-

-

-

-

-

-

-

-

-

-

-

-

4940

-

-

-

-

-

-

-

-

-

-

-

-

-

-

4950

20

20

18

17

-

-

-

-

-

-

-

-

-

-

4960

-

-

-

-

-

-

-

-

-

-

-

-

-

-

4980

20

20

18

17

-

-

-

-

-

-

-

-

-

-

5040

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5060

-

-

-

-

-

-

-

-

-

-

-

-

-

-

5080

-

-

-

-

-

-

-

-

-

-

-

-

-

5470 to 5725 MHz

100

5500

-

-

-

-

-

-

-

-

191

191

191

191

171

104

5520

-

-

-

-

-

-

-

-

211

211

211

201

171

108

5540

-

-

-

-

-

-

-

-

211

211

211

201

171

112

5560

-

-

-

-

-

-

-

-

211

211

211

201

171

116

5580

-

-

-

-

-

-

-

-

211

211

211

201

171

120

5600

-

-

-

-

-

-

-

-

211

211

211

201

171

124

5620

-

-

-

-

-

-

-

-

211

211

211

201

171

128

5640

-

-

-

-

-

-

-

-

211

211

211

201

-

132

5660

-

-

-

-

-

-

-

-

211

211

211

201

-

136

5680

-

-

-

-

-

-

-

-

211

211

211

201

-

140

5700

-

-

-

-

-

-

-

-

191

191

191

191

-

5725 to 5850 MHz

149

5745

26

24

23

20

23

23

23

20

-

-

-

-

-

153

5765

26

24

23

20

23

23

23

20

-

-

-

-

-

157

5785

26

24

23

20

23

23

23

20

-

-

-

-

-

161

5805

26

24

23

20

23

23

23

20

-

-

-

-

-

165

5825

26

24

23

20

-

-

-

-

-

-

-

-

-

1 Requires dynamic frequency selection (DFS) and transmit power control (TPC).


Table 9-3 Channels and Maximum Conducted Power for IEEE 802.11a Radio with Up to 17 dBi Antennas

Channel
ID
Center Frequency
(MHz)
Maximum Conducted Power Levels (dBm) in the Regulatory Domains
-N
-P
-S
OFDM
6-24
OFDM
36
OFDM
48
OFDM
54
OFDM
6-24
OFDM
36
OFDM
48
OFDM
54
OFDM
6-24
OFDM
36
OFDM
48
OFDM
54

(4900 to 5100 MHz)

-

4920

-

-

-

-

17

17

17

17

-

-

-

-

-

4940

-

-

-

-

20

20

18

17

-

-

-

-

-

4950

-

-

-

-

-

-

-

-

-

-

-

-

-

4960

-

-

-

-

20

20

18

17

-

-

-

-

-

4980

-

-

-

-

201

201

181

171

-

-

-

-

-

5040

-

-

-

-

202

201

181

171

-

-

-

-

-

5060

-

-

-

-

201

201

181

171

-

-

-

-

-

5080

-

-

-

-

201

201

181

171

-

-

-

-

5470 to 5725 MHz

100

5500

-

-

-

-

-

-

-

-

-

-

-

-

104

5520

-

-

-

-

-

-

-

-

-

-

-

-

108

5540

-

-

-

-

-

-

-

-

-

-

-

-

112

5560

-

-

-

-

-

-

-

-

-

-

-

-

116

5580

-

-

-

-

-

-

-

-

-

-

-

-

120

5600

-

-

-

-

-

-

-

-

-

-

-

-

124

5620

-

-

-

-

-

-

-

-

-

-

-

-

128

5640

-

-

-

-

-

-

-

-

-

-

-

-

132

5660

-

-

-

-

-

-

-

-

-

-

-

-

136

5680

-

-

-

-

-

-

-

-

-

-

-

-

140

5700

-

-

-

-

-

-

-

-

-

-

-

-

5725 to 5850 MHz

149

5745

26

24

23

20

-

-

-

-

20

20

20

20

153

5765

26

24

23

20

-

-

-

-

20

20

20

20

157

5785

26

24

23

20

-

-

-

-

20

20

20

20

161

5805

26

24

23

20

-

-

-

-

20

20

20

20

165

5825

-

-

-

-

-

-

-

-

-

-

-

-

1 Limited license until 11/2007.

2 Limited license until 11/2007.


Antenna Settings

Maximum Power Levels Allowed in Some Regulatory Domains

An improper combination of power level and antenna gain can result in equivalent isotropic radiated power (EIRP) above the amount allowed per regulatory domain. Table 9-4 indicates the maximum power levels allowed with an 8 dBi external antenna in the -A and -N regulatory domains.


Caution To avoid exceeding maximum conducted power levels in the -A , -N, and -E regulatory domains when using an 8 dBi antennas, you must manually set the access point output power level to not exceed the value shown in Table 9-4 and Table 9-5.


Note In Table 9-4 and Table 9-5, the operating data rates (in Mbps) are shown in the CCK and OFDM table cells. For example: OFDM 9-24 indicates 9 to 24Mbps data rates and All OFDM indicates 6 to 54 Mbps data rates.


Table 9-4 Maximum Power Levels for the 802.11b/g Radio with 8-dBi Antenna
(for -A and -N Regulatory Domains)

Channel
ID
Center
Frequency
(MHz)
Maximum Conducted Average Power Levels in dBm
CCK
1-11
OFDM
6-36
OFDM
48
OFDM
54

1

2412

23

19.5

19.5

19.5

2

2417

23.5

21.5

21.5

21

3

2422

24

23

22

21

4

2427

24

24

22

21

5

2432

24

24

22

21

6

2437

24

24

22

21

7

2442

24

24

22

21

8

2447

24

24

22

21

9

2452

24

22.5

22

21

10

2457

23.5

21.5

21.5

21

11

2462

23

19.5

19.5

19.5

12

2467

-

-

-

-

13

2472

-

-

-

-

14

2484

-

-

-

-


Table 9-5 Maximum Power Levels for the 802.11b/g Radio with 8-dBi Antenna
(for -E Regulatory Domain)

Channel
ID
Center
Frequency
(MHz)
Maximum Conducted Average Power Levels in dBm
CCK
1-11
OFDM
6-36
OFDM
48
OFDM
54

1

2412

12

12

12

12

2

2417

12

12

12

12

3

2422

12

12

12

12

4

2427

12

12

12

12

5

2432

12

12

12

12

6

2437

12

12

12

12

7

2442

12

12

12

12

8

2447

12

12

12

12

9

2452

12

12

12

12

10

2457

12

12

12

12

11

2462

12

12

12

12

12

2467

12

12

12

12

13

2472

12

12

12

12

14

2484

12

12

12

12


Special Country Restrictions

Table 9-6 lists special restrictions for wireless operation in some countries.

Table 9-6 Special Country Restrictions for Wireless Operation

Country
Frequency Band (GHz)
Regulatory Domain
Special Limitation and Restrictions

Australia

5

-N

5 GHz maximum antenna gain limited to 7 dBi.

China

5

-C

5 GHz maximum antenna gain limited to 9.5 dBi.

EU countries

5

-E

5 GHz maximum antenna gain limited to 7 dBi.

Japan

4.9 and 5

-P

License required for operation in the 4.9 and 5 GHz bands.

South Korea

5

-K

5 GHz maximum antenna gain limited to 7 dBi.

2.4

-E1

2.4 GHz maximum antenna gain limited to 6 dBi.

Mexico

2.4

-N

End user must limit 2.4 GHz operation to 2450 to 2483.5 MHz and 36 dBm EIRP2 .

New Zealand

5

-N

5 GHz maximum antenna gain limited to 7 dBi.

Russian Federation

5

-E

End user must limit 5 GHz operation to 5650 to 5725 MHz.

Singapore

2.4

-S

Wireless operation is intended for use in confined areas of buildings and localized on-site areas. An IDA license is required for operation over public areas.

Wireless operation is limited to a maximum of 23 dBm EIRP1.

5

-S

Wireless operation is intended for use in confined areas of buildings and localized on-site areas. An IDA license is required for operation over public areas.

5 GHz maximum antenna gain limited to 9.5 dBi.

An IDA license is required for operation from
30 dBm to 36 dBm EIRP.

United States

4.9

-A

The use of the 4.9-GHz band requires a license and may be used only by qualified Public Safety operators as defined in section 90.20 of the FCC rules.

2.4

-A and -N

2.4 GHz maximum antenna gain limited to 8 dBi.

1 The LAP1505 access point.

2 EIRP (dBm) = maximum output power (dBm) + antenna gain (dBi)


Changing the Lightweight Access Point Output Power

This section provides instructions for changing the 1500 series access point output power to comply with the maximum power limits imposed by special regulatory and country restrictions (see the "Antenna Settings" section). Follow these instructions to change the output power settings using a controller and your browser:


Note Administrator privileges may be required in order to change access point settings.



Note Regulatory domains are set at the factory and cannot be changed by the user.



Caution To meet regulatory restrictions, the access point and the external antenna must be professionally installed. The network administration or other IT professional responsible for installing and configuring the unit is a suitable professional installer. Following installation, access to the unit should be
password-protected by the network administrator to maintain regulatory compliance.

The output power on the 1500 series access points can be changed only by using a Cisco wireless LAN controller (2600 series or 4400 series), the controllers on a Cisco Wireless Services Module (WiSM), or using Cisco Wireless Control System (WCS).


Note See the Cisco Wireless LAN Controller Configuration Guide for more details on how to to configure your access point using the web-browser interface.


Follow these steps to change the 1500 series access point's output power to meet local regulations using a controller:


Step 1 Open your Internet browser. You must use Microsoft Internet Explorer 6.0.2800 or a later release.

Step 2 Enter https://IP address (where IP address is the controller's IP address) in the browser address line and press Enter. A user login screen appears.

Step 3 Enter the username and password and press Enter. The controller's summary page appears.


Note The username and password are case-sensitive.


Step 4 Click Wireless > 802.11a Radios or 802.11b/g Radios and a list of associated access points appears.

Step 5 Choose the desired access point from the displayed list and click Configure. The the radio settings page appears.

Step 6 Scroll down to the Tx Power Level Assignment field, and click Custom.

Custom indicates that the radio output power is manually controlled by the Tx Power Configuration setting field.

Step 7 In the Tx Power Level field, select the appropriate power level setting (1 to 5).

Based on the operating channel, the regulatory domain, and the controller power level setting (1 to 5), the actual transmit power at the access point can be reduced to comply with special regulatory or country restrictions.


Note The access point supports only two output power levels for the 2.4-GHz radio and three output power levels for the 5-GHz radio.



Note Table 9-1 and Table 9-2 list the access point maximum output power levels supported for each regulatory domain when the access point is shipped from the factory.


Table 9-7 lists the controller power settings and the corresponding output power levels for these two examples:

2.4-GHz (802.11b/g) operation:

American regulatory domain

Channel 3 using 11-Mbps data rates

5-GHz (802.11a) operation:

American regulatory domain

Channel 149 using 36-Mbps data rates

Table 9-7 Example of Output Power Levels

Controller
Tx Power Settings1
Radio Output Power
802.11b/g (dBm)
802.11a (dBm)

1 (maximum)

242

243

2

21

21

1 The Tx Power Level setting of 1 represents the maximum conducted power setting for the access point. Each subsequent controller power level (such as 2, 3, 4, etc.) represents an approximate 3-dBm reduction in transmit power from the previous power level.

2 The maximum output power level obtained from Table 9-1.

3 The maximum output power level obtained from Table 9-2.


Step 8 Click Apply.

Step 9 Close your Internet browser.

For additional configuration information, refer to the Cisco Wireless LAN Controller Configuration Guide.