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G4D05
How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?
Pick an answer to check it.
Answer: D. It is 100 times more powerful
Each 10 dB is a factor of 10 in power, so 20 dB = 10 x 10 = 100 times. A signal 20 dB over S9 is 100 times more powerful than S9.
Tip: 20 dB = 100 times.