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Wireless Reference Section

Db to mW Conversion Table

dB mW dB mW dB mW dB mW dB mW dB mW
1 1.3 6 4 11 13 16 40 21 126 26 398
2 1.6 7 5 12 16 17 50 22 158 27 501
3 2.0 8 6 13 20 18 63 23 200 28 630
4 2.5 9 8 14 25 19 79 24 250 29 794
5 3.2 10 10 15 30 20 100 25 316 30 1000

2.4 GHz Channels used by Country/Region

Country Channels
Europe (ETSI) 01 - 13
USA (FCC) 01 - 11
France 10 - 13
Japan 01 - 14

2.4 GHz Maximum Power Levels by Region

Country Maximum conductive power/radiated field limit Maximum conductive power/radiated field limit Regulatory Body Regulatory Document
Europe 
(Except France and Spain)
20 dBm 100 mW ETSI (European Telecommunications Standards Institute) ETS 300-328
USA 30 dBm 1000 mW FCC 47 CFR 15.247
Japan 10 dBM 10 mW ARIB STD-T66

2.4 GHz Channels and Frequencies

Channel Frequency GHz
1 2.412
2 2.417
3 2.422
4 2.427
5 2.432
6 2.437
7 2.442
8 2.447
9 2.452
10 2.457
11 2.462
12 2.467
13 2.472
14 2.484

5.8 GHz Band C Channel Centres, Channel Widths and frequencies

Centre Frequency
(MHz)
Channel Width
(MHz)
Centre Frequency
(MHz)
Channel Width
(MHz)
Centre Frequency
(MHz)
Channel Width
(MHz)
5727.5 5 5730 10 5735 20
5732.5 5 5740 10 5755 20
5737.5 5 5750 10 5775 20
5742.5 5 5760 10 5835 20
5747.5 5 5770 10    
5752.5 5 5780 10    
5757.5 5 5820 10    
5762.5 5 5830 10     
5767.5 5 5840 10    
5772.5 5        
5777.5 5        
5782.5 5        
5787.5 5        
5792.5 5        
5817.5 5        
5822.5 5         
5827.5 5         
5832.5 5        
5837.5 5        
5842.5 5        
5847.5 5