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Re: [CQ-Contest] How much is a dB worth ?

To: cq-contest <cq-contest@contesting.com>
Subject: Re: [CQ-Contest] How much is a dB worth ?
From: Jukka Klemola <jpklemola@gmail.com>
Date: Tue, 1 Mar 2016 10:44:51 +0200
List-post: <cq-contest@contesting.com">mailto:cq-contest@contesting.com>
All these 2.6 to 2.8 per cent per deciBel are for CW only.

Has anybody invested time to analyze the dB effect on SSB score?
My guess is the difference is bigger on phone.


73,
Jukka OH6LI

2016-02-27 18:37 GMT+02:00 Jim Brown <k9yc@audiosystemsgroup.com>:

> I suspect that the magnitude of the difference probably depends on the
> contest. Quite a few years ago, N6ZFO, whose job in pharama development
> included lots of statistics, did an analysis for NCCC saying that 1 dB was
> good for 2.6% in ARRL Sweepstakes.
>
> Pretty good agreement with your work.
>
> 73, Jim K9YC
>
> On Fri,2/26/2016 2:46 PM, Steve London wrote:
>
>> This subject has recently come up on the Topband reflector.
>>
>> I look at this from the question: "How much is a dB worth to my score in
>> a DX contest ?"
>>
>> Information about N1UR's contest performance presents a possible way to
>> answer this question. For years, Ed operated SOAB low power. He recently
>> changed to high power. Ed is an excellent operator. I believe he is getting
>> the most out of his station and skills, whether operating low or high
>> power. You can't look at his absolute change in score, because conditions
>> are so different from year-to-year. However, you can compare his score each
>> year as a percentage of the top high power USA score that same year.
>>
>> I'm no statistician, but did some back-of-the-envelope calculations. I
>> came up with something in the range of 2.7% to 3.0% increase in score per
>> dB. I'll leave it to smarter people to refine my calculations.
>>
>> 73,
>> Steve, N2IC
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