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Re: LF: WSPR Entry

To: [email protected]
Subject: Re: LF: WSPR Entry
From: Andy Talbot <[email protected]>
Date: Mon, 16 Nov 2009 20:58:02 +0000
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Oh yes - missed that!
The freqs are all at odd spacings as well.

I find it hard to believe the WSPR decoding algorithm will generate
the same decode for random noise twice - unless, perhaps, the noise is
correlated in the frequency domain.   THEN... perhaps its feasible
there is a sort of decodeable   time/frequency comb that just about
triggers the sync detect.

Weird !


Andy
www.g4jnt.com

This email has been scanned for damaging side-effects by the health
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2009/11/16 Rik Strobbe <[email protected]>:
> Andy,
>
> note that the 2 hits have the same timestamp but different frequency.
> You can more of these double "fake" hits:
>
> 2009-01-30 20:00   Y23LWM   0.137592   -26   0   AC23   10   DF6NM   JN59nk
>   18083   194
> 2009-01-30 20:00   Y23LWM   0.137568   +8   0   AC23   10   DF6NM   JN59nk
> 18083   194
>
> 2009-10-22 05:18   CE8QNK   0.503890   -21   -3   OB23   0.005   SQ2BXI
> JO94gj   15730   291
>  2009-10-22 05:18   CE8QNK   0.503969   -25   -3   OB23   0.005   SQ2BXI
> JO94gj   15730   291
>
> 2009-11-08 04:50   G17LSZ   0.503817   -27   -2   GA37   0.01   SQ2BXI
>  JO94gj   15730   62
> 2009-11-08 04:50   G17LSZ   0.503829   -26   -2   GA37   0.01   SQ2BXI
>  JO94gj   15730   62
>
> 2009-11-12 21:12   E51OOP   0.503999   -33   3   GB06   0.1   G4WGT   IO83qo
>   14761   42
> 2009-11-12 21:12   E51OOP   0.503810   -25   3   GB06   0.1   G4WGT   IO83qo
>   14761   42
>
> 2009-05-17 21:28   EN6WV   0.503858   -17   -4   MD07   200   GM4ISM
> IO85ar   13421   324
> 2009-05-17 21:28   EN6WV   0.503850   -24   -4   MD07   200   GM4ISM
> IO85ar   13421   324
>
> 2009-09-08 19:42   NE9GWP   0.503876   -24   1   OG12   0.5   G0HNW   IO93cn
>   13386   318
> 2009-09-08 19:42   NE9GWP   0.503851   -23   1   OG12   0.5   G0HNW   IO93cn
>   13386   318
>
> 2009-09-19 10:16   1Y3X   0.503556   -33   1   AD87   2   K1JT   FN20
>   13336   61
> 2009-09-19 10:16   1Y3X   0.503468   -32   1   AD87   2   K1JT   FN20
>   13336   61
>
> and so on ...
>
> 73, Rik
>
> Quoting Andy Talbot <[email protected]>:
>
>> Found in the database.  Two consecutive hits with the same details
>> suggests an incorrectly set station..
>>
>> Uraguay, in Central Africa !!!!!!!!!!!!!!!
>>
>> 2009-11-16 19:06  CW5PPT  0.503997  -30  3  KJ31  +53  199.526  G4WGT
>> IO83qo  6399  3976
>> 2009-11-16 19:06  CW5PPT  0.503849  -15  3  KJ31  +53  199.526  G4WGT
>> IO83qo  6399  3976
>>
>>
>> Andy
>> www.g4jnt.com
>>
>> this email has been scanned for political correctness by the nanny state
>>
>>
>
>
>
>

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