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davrosthedalek
on May 22, 2025
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The scientific “unit” we call the decibel
That is of course not true. dB without reference is perfectly fine to use for gain and attenuation. dBm or any of the variants would be flat out wrong.
mitthrowaway2
on May 22, 2025
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Even then, you'll get different results if it's 10 dB of voltage gain or 10 dB of power gain. You need to know what the actual units are.
mcnamaratw
on May 22, 2025
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No, dB are always power gain.
davrosthedalek
on May 22, 2025
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Exactly, and that's why a voltage gain of factor 10 is 20dB, because it's a power gain of factor 100.
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