What is the composite power of multiple RF signals?

[Eventide]

I need to calculate the composite power at the input of an RF distribution system, is it just the sum of the signals in milliwatts at the input? I can measure each individual signal with an a spectrum analyser but I do not have a power meter to anable measurement of the total power.

 

[tech99]

I need to calculate the composite power at the input of an RF distribution system, is it just the sum of the signals in milliwatts at the input? I can measure each individual signal with an a spectrum analyser but I do not have a power meter to anable measurement of the total power.

Yes. I presume the signals are incoherent eg different frequencies, so they add on a power basis. Do not add them in decibels.

 

[Eventide]

Thanks for the confirmation tech99.