Thursday, November 17, 2011

dbm to mw conversion

dBm = log10 (mW)*10
mW =10^(dBm/10)



40 dBm 10.00 watts  
36 dBm 4.00 watts { Maximum ERP allowed by FCC in U.S.
30 dBm 1.00 watts  
27 dBm 500 milliwatts  
26 dBm 400 milliwatts  
25 dBm 320 milliwatts  
24 dBm 250 milliwatts  
23 dBm 200 milliwatts { Typical output from WLAN devices at 915MHz
22 dBm 160 milliwatts  
21 dBm 130 milliwatts  
20 dBm 100 milliwatts { Maximum ERP allowed by E.T.S.I. In Europe
15 dBm 32 milliwatts  
10 dBm 10 milliwatts  
5 dBm 3.2 milliwatts  
4 dBm 2.5 milliwatts  
3 dBm 2.0 milliwatts  
2 dBm 1.6 milliwatts  
1 dBm 1.3 milliwatts  
0 dBm 1.0 milliwatts  
1- dBm 0.79 milliwatts  
5- dBm 0.32 milliwatts  
10- dBm 0.1 milliwatts  
20- dBm 0.01 milliwatts  
30- dBm 0.001 milliwatts  
40- dBm 0.0001 milliwatts  
50- dBm 0.00001 milliwatts  
60- dBm 0.000001 milliwatts  
70- dBm 0.0000001 milliwatts  
80- dBm 0.00000001 milliwatts {Receive threshold for most WLAN devices