[600MRG] Re-post: Strange Signal in 630M WSPR Band

[Kenneth G. Gordon]

We got it both times, Claude. Maybe your ISP is slow.

Ken W7EKB /24

On 18 Sep 2013 at 16:07, Claude Baker wrote:

> Sorry for the re-post, my link wasn't accepted.
> 
> I'm wondering if  anyone might recognize or even speculate on the
> origin of a signal I've been seeing for the last couple of weeks.
> 
> I'm a
>  relatively constant presence on the 630M WSPR band. Over the last
> couple of weeks I've noticed a stepped signal showing up in my
> display. Initially I thought QRSS but as I looked more closely I
> noticed the use of multiple frequency steps spaced at 10 Hz intervals.
> When I finally noticed that they seemed to be a fairly precise 30
> seconds long, I used Spectrum Lab's 30 second per dot QRSS mode to
> display the signal. 
> 
> 
> I posted a screen capture taken today, 2013-09-18, that covers roughly
> 1500Z to 1630Z: http://www.flickr.com/photos/102149795@N06/
> 
> Info about the signal reception:
>     1. Relatively local to Aurora, CO - I see the signal day and
> night.
> 
>    
>  2. I live in an antenna free neighborhood so I use an indoor loop,
> 8'x13', tacked to the back wall of my radio room. Although I have not
> been able to detect any real directionality as expected for a loop, it
> is oriented in a 105-285 degree plane.  Using Google maps to project
> the
>  eastward lobe, the centerline hits the Atlantic at right on the North
>  
> Carolina/South Carolina border.
> 
>     3. The signal does move but 
> note that it frequently returns to a step at about 1530 Hz in the
> display - visually forming a straight line (little, if any drift ).
> 1500
>  Hz in the display corresponds to 475.700 KHz 
> 
> 
>     4. The 
> signal occasionally goes off for about 20 minutes and usually returns
> in
>  slightly different frequency range. As I write at approximately
>  2000Z, 
> the range is 1600-1650 Hz.
> 
> Earlier today I communicated with John
>  at WG2XIQ to ask what he thought. He offered some speculation but
>  from 
> my perspective, his most important observation was that it might not
> be an intelligent communication but rather "noise" or a harmonic from
> some electronic system. That is not a quote of what John said but
> rather my summation.
> 
> Please, any ideas?
> 
> 
> Claude Baker, AC0ZL
> Aurora, CO
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> 



Kenneth G. Gordon W7EKB

"Courage is being scared to death but saddling up anyway."--- John   Wayne