There is similar signal, much weaker, about 25Hz HF.

John F5VLf

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On 31/08/2009 at 15:16 John RABSON wrote:

>Jim,
>
>I believe it is you I can see with Argo, about 30dB over QRM.
>
>John Rabson 
>F5VLF
>58800 Cervon
>France
>JN17vg
>
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>
>On 31/08/2009 at 13:29 James Moritz wrote:
>
>>Dear LF Group,
>>
>>The M0BMU WSPR beacon is now running on 137.5kHz (136.0kHz "dial
>>frequency") 
>>with about 100mW ERP. I am also receiving and uploading any spots to the 
>>WSPRnet database. Any reports would be very welcome.
>>
>>Cheers, Jim Moritz
>>73 de M0BMU