Recently I raised a question how to
measure the power received from an SDR receiver .
Ham use S-meter scale , while for professional use a scale in logarithmic
units ( dBm , dBuV , dBuV/m)is required . Conversion is mathematically easy .
Most of the software have both S-Meter and dBm or dBm(r) where (r)
stands for relative .
Some software use different settings depending on the type of modulation
of signal that they have to measure and demodulate , while some other no .
Some software give steady measurements , independently from modulation ,
some other no .
I have made a series of video showing the reasons why .
I have choose three kind of modulations : WBFM ( used in the 87.5-108
MHz Broadcasting Band) , DAB and the old AM used in Medium Waves .
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