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LF: s/n shown by wspr .... what is it actually showing ?

from [Graham] [Permanent Link][Original]
To: <[email protected]>
Subject: LF: s/n shown by wspr .... what is it actually showing ?
From: "Graham" <[email protected]>
Date: Wed, 23 Sep 2009 21:41:20 +0100
Importance: Normal
Reply-to: [email protected]
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Just watched Dave's G3YXM  wspr  signal on spec-lab ,
 
Spec-lab showed the  signal to  be a constant  20 dB over the back ground noise floor  of the  rx
so in my  book that's 20 dB  s/n  
 
The  wspr  decode is  showing -3 dB s/n ?
 
What is it  actually  displaying ?
 
G ..
 
 
 
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