That's one dB of AUDIO that is detectable by the human ear, not one dB of
AGC or signal strength, no matter how accurately measured.
73, Duane
On Tue, 19 Mar 2002 06:05:25 -0500 "Tom Rauch" <w8ji@contesting.com>
writes:
> From: Caitlyn Martin <caitlynmaire@earthlink.net>
> To: "Simmons, Reid W"
> <reid.w.simmons@intel.com>
> Copies to: TenTec@contesting.com
> Subject: Re: [TenTec] Orion power output
> Date sent: Mon, 18 Mar 2002 15:40:36 -0500
>
> > Hi, Reid, and everyone else,
> >
> > > I also question the need for the extra 50 watts. I believe it
> takes
> > > a 3dB increase to be detectable by the human ear, and about 6 dB
> to
> > > equal one 'S' unit increase. So, 150 vs 100 watts is mostly
> > > marketing/advertising hype with virtually no benefit to the user
> -
> > > but a slight benefit to the power company :-).
> >
> > Thank you. That verifies what I thought I knew to be true.
>
> One dB (not 3dB) is the smallest level increase recognized by the
> human ear, whatever that means. This applies to only a single tone
> with no noise or interference.
>
> The one dB rule does NOT apply to signals in noise or interference.
>
> When a signal is in noise or interference, one dB can make a
> HUGE difference in readability.
> 73, Tom W8JI
> W8JI@contesting.com
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>
Duane Calvin, AC5AA
Austin, Texas
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