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Reply To: Microwave Transmission


Hi Sabir,

sorry for the late reply.
by substracting two powers, you obtain a delta of power.
And a “delta” is an attenuation…

dBm – dBm = dB

that’s correct.

a dB is a difference (or “delta”) between two powers expressed in dBm. Maybe you should refer to wikipedia if you want a more mathematical approach of this…