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20 dBm is 20dB above 1 milliwatt (reference). 27dBm is 0.5 watt and 30 dBm would be 1 watt. Every 10 dB increase is 10 times the power previous value. Every doubling of power is 3 dB upward change. Got it? OK
![Noise Figure Measurement [Y Factor Method]](http://i.ytimg.com/vi/4SB4YHdqRSQ/mqdefault.jpg)
🙏🙏🌹🌹
20 dBm is 20dB above 1 milliwatt (reference). 27dBm is 0.5 watt and 30 dBm would be 1 watt. Every 10 dB increase is 10 times the power previous value. Every doubling of power is 3 dB upward change. Got it? OK