An interesting attempt to quantify what a few db mean! Very clever and very
effective.
Here is my take. You put up a stack or change from a tribander to a
monobander. You pick up a few db. You can do A/B tests all day long and
not tell any difference. Then you do a contest and your score goes up a few
percent. Hard to tell where that extra db or two makes a difference, but it
does!
Randy, K5ZD
> -----Original Message-----
> From: cq-contest-bounces@contesting.com
> [mailto:cq-contest-bounces@contesting.com] On Behalf Of David Gilbert
> Sent: Monday, August 23, 2010 6:05 PM
> To: cq-contest@contesting.com
> Subject: [CQ-Contest] Minimum Discernible Difference
>
>
> I've created a web page that documents my rather clumsy
> efforts to investigate how much difference in signal strength
> might be noticeable in weak signal and/or contest conditions,
> with several audio files included as illustration. Please
> don't consider any of it to be authoritative since I am not
> an audio professional, but maybe some of it will be useful to someone.
>
> http://www.ab7e.com/weak_signal/mdd.html
>
> 73,
> Dave AB7E
>
>
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