Justin Richards wrote:
> Following on and accepting that dB is a ration then -3dB =3D 1/2 and
> -6dB =3D 1/4 therefore

Yes in terms of power.  In terms of voltage it's the square root of that.
So a voltage gain of 2 is 6dB.  3dB is a voltage gain of sqrt(2) =3D 1.4.


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