
58 Other Information
What is a dBm?
When one of the powers is dened, again for convenience, as 1mW,
then the related unit, abbreviated to ‘dBm’, is described as follows.
The table below gives some powers and their equivalent dBm values:
Power dBm
1 μW -30.00
10 μW -20.00
100 μW -10.00
0.25 mW -6.02
0.5 mW -3.01
1 mW 0
2 mW 3.01
4 mW 6.02
10 mW 10.00
100 mW 20.00
1 W 30.00
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