Thanks, Bill. My intuition came from thinking of power as the integral of the magnitude squared of the signal over the time-frequency extent. I reasoned that doubling the bandwidth should double the power, all else being the same. But all else is not the same as you pointed out.
BTW, in my experience wsjtx does not work half-bad with acoustic coupling. So I hope folks will forgive my interchanging of the words “acoustic” and “audio”. ☺ --Mike
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