FCC Rules and Regulations | AIR802 | 2.4 & 5 GHz Bands
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FCC Rules and Regulations

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FCC 2.4 GHz BAND RULES (POINT-TO-MULTIPOINT)

Maximum = +36dBm (4watts)

Maximum Power from Intentional Radiator *1

Maximum Antenna Gain (dBi)

EIRP (dBm)

EIRP (watts)

30dBm or 1 watt

6

36

4

27dBm or 500mW

9

36

4

24dBm or 250mW

12

36

4

21dBm or 125mW

15

36

4

18dBm or 63mW

18

36

4

15dBm or 32mW

21

36

4

12dBm or 16mW

24

36

4

 *1 The FCC terminology of Intentional Radiator is the transmitter power of the wireless equipment, such as a wireless access point, router or bridge.

FCC 2.4 GHz BAND RULES (POINT-TO-POINT)

Maximum = See FCC Special Rule *2

Maximum Power from Intentional Radiator *1

Maximum Antenna Gain (dBi)

EIRP (dBm) *3

EIRP (watts) *3

30dBm or 1 watt

6

36

4

29dBm or 800mW

9

38

6.3

28dBm or 630mW

12

40

10

27dBm or 500mW

15

42

16

26dBm or 400mW

18

44

25

25dBm or 316mW

21

46

39.8

24dBm or 250mW

24

48

63

23dBm or 200mW

27

50

100

22dBm or 160mW

30

52

158

*1 The FCC terminology of Intentional Radiator is the transmitter power of the wireless equipment, such as a wireless access point, router or bridge.

*2 The FCC ruling states that for every 1dBi the Intentional Radiator is reduced below the initial 30dBm that the antenna gain may be increased from the initial 6dBi by 3dB.

*3 Equivalent Isotropically Radiated Power (EIRP) is terminology for the total RF power radiated by the antenna.

FCC 5 GHz BANDS AND RULES

BAND

Frequency (GHz)

Permitted Use Location

Maximum Output Power

Maximum EIRP *2

UNII

(Low)

5.15-5.25

Outdoor Access Point

1 Watt

30 dBm *1

125mw 21dBm

UNII (Low)

5.15-5.25 Indoor Access Point

1 Watt     30dBm *1

 
UNII (Low) 5.15-5.25 Fixed Point to Point Access Points 1 Watt   30dBm *3  
UNII (Low) 5.15-5.25 Client Devices 250mW   24dBM  *4  

UNII-2 (Middle)

5.25-5.35

Indoor or Outdoor

200mW 23dBm or 11 dBm + 10 log B, where B is the 26 dB emission bandwidth in megahertz  *5

 

UNII-2 Extended

5.47-5.725

Indoor or Outdoor

200mW 23dBm or 11 dBm + 10 log B, where B is the 26 dB emission bandwidth in megahertz  *5

 

UNII-3 (Upper)

5.725-5.825

Typical Outdoor

1 watt 30dBm *6

 

*1 Provided  the maximum antenna gain does not exceed 6 dBi. In addition, the maximum power spectral density shall not exceed 17 dBm in any 1 megahertz band. If transmitting antennas of directional gain greater than 6 dBi are used, both the maximum conducted output power and the maximum power spectral density shall be reduced by the amount of dB that the directional gain of the antenna exceeds 6 dBi. 

*2 Equivalent Isotropically Radiated Power (EIRP) is terminology for the total RF power radiated by the antenna.

*3 The maximum power spectral density shall not exceed 17 dBm in any 1 megahertz band. Fixed point-to-point U-NII devices may employ antennas with directional gain up to 23 dBi without any corresponding reduction in the maximum conducted output power or maximum power spectral density. For fixed point-to-point transmitters that employ a diretional antenna gain greater than 23 dBi, a 1 dB reduction in maximum conducted output power spectral density is required for each 1 dB of antenna gain in excess of 23 dBi. Fixed, point-to-point operations exclude the use of point-to-multipoint systems, omnidirectional applications, and multiple collocated transmitters transmitting the same information. The operator of the U-NII device, or if the equipment is professionally installed, the installer, is responsible for ensuring that systems employing high gain directional antennas are used exclusively for fixed, point-to-point operations.

*4 Provided the maximum antenna gain does not exceed 6 dBi. In addition, the maximum power spectral density shall not exceed 11 dBm in any 1 megahertz band. If transmitting antennas of directional gain greater than 6 dBi are used, both the maximum conducted output power and the maximum power spectral density shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi.

*5 In addition, the maximum power spectral density shall not exceed 11 dBm in any 1 megahertz band. If transmitting antennas of directional gain greater than 6 dBi are used, both the maximum conducted output power and the maximum power spectral density shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi.

*6 In addition, the maximum power spectral density shall not exceed 30 dBm in any 500-kHz band. If transmitting antennas of directional gain greater than 6 dBi are used, both the maximum conducted output power and the maximum power spectral density shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi. However, fixed point-to-point U-NII devices operating in this band may employ transmitting antennas with directional gain greater than 6 dBi without any use of corresponding reduction in transmitter conducted power. Fixed point-to-point operations exclude the use of point-to-multipoint sytems, omnidirectional applicaitons, and multiple collocated transmitters transmitting the same information. The operator of the U-NII device, or if the equipment is professionally installed, the installer, is responsible for ensuring that systems employing high gain directional antennas are used exclusively for fixed point-to-point operations.

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