How Do You Calculate Signal Power After Attenuation?

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met0555
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Hi,

I have a question regarding frequency, power...
Let's say I have signal with power level of X dBm and the signal has been attenuated by Y times.
What is the correct formula to use to get the final power ?


Thank You
 
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met0555 said:
Hi,

I have a question regarding frequency, power...
Let's say I have signal with power level of X dBm and the signal has been attenuated by Y times.
What is the correct formula to use to get the final power ?


Thank You

For power ratios, use 10*log(Pf/Pi)