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Re: Noise measurment and figures

Subject: Re: Noise measurment and figures
From: Walter Knapp <>
Date: Sat, 27 Apr 2002 22:51:00 -0400
Klas Strandberg wrote:
> What is the matter?
> I write:
> "1/ For each time you "parallel" transistors, you get 3 db less transistor
> noise, because noise will randomly get anti-phase. Four elements therefore
> means -6db, hence; 22 - 6= 18 dbA."
> But 22-6 is not 18...
> Klas.

Which makes your other correction need changing back. It was correct as
originally written:

> "2/ An average amplification of PZM is usually estimated to some 6 db.
> Therefore we're down to 10db inherent noise of the stereo DATmic, without
> the dish."

Grand fun playing with numbers.



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